diff --git a/intro_flutter_gpu/codelab_rebuild.yaml b/intro_flutter_gpu/codelab_rebuild.yaml
index eb852c6e5e..1d993ddc1b 100644
--- a/intro_flutter_gpu/codelab_rebuild.yaml
+++ b/intro_flutter_gpu/codelab_rebuild.yaml
@@ -5,7 +5,7 @@ steps:
       - name: Remove generated code
         rmdir: step_01
       - name: Create project
-        flutter: create --empty intro_flutter_gpu --platforms android,ios,macos,windows
+        flutter: create --empty intro_flutter_gpu --platforms android,ios,macos,windows,linux
       - name: Make the macOS titlebar transparent, content full window, and hide the title bar.
         full-screen-macos-main-menu-xib: intro_flutter_gpu/macos/Runner/Base.lproj/MainMenu.xib
       - name: Strip DEVELOPMENT_TEAM
diff --git a/intro_flutter_gpu/prompt.md b/intro_flutter_gpu/prompt.md
new file mode 100644
index 0000000000..216aaf0d1c
--- /dev/null
+++ b/intro_flutter_gpu/prompt.md
@@ -0,0 +1,1235 @@
+I'd like to create a codelab for introducing medium level Flutter developers to the new
+Flutter GPU APIs exposed in Flutter's Impeller on Android, iOS, Windows, macOS and Linux.
+
+# Codelab content
+
+The codelab is called "Introduction to Flutter GPU". The codelab is made up of a series of steps.
+
+This codelab requires Flutter version 3.28, which comes with Dart 3.7.
+
+## Step 1. Single Green Triange
+
+Create the empty Flutter application for the supported platforms
+
+```console
+$ flutter create --empty intro_flutter_gpu --platforms android,ios,macos,windows,linux
+```
+
+Add `flutter_gpu` dependency from the Flutter SDK.
+
+```console
+$ flutter pub add flutter_gpu --sdk=flutter 
+```
+
+Add dependencies from `pub.dev`
+
+```console
+$ flutter pub add flutter_gpu_shaders native_assets_cli vector_math
+```
+
+The `native_assets_cli` pipeline, defined below, converts the OpenGL Shader 
+Language (GLSL) into the native shaders for the platform and writes them out 
+to `build/shaderbundles`. For now, these need to be explicitly added to the 
+`pubspec.yaml` so that the native shader bundle is included into the built
+application.
+
+Patch `pubspec.yaml` as follows:
+
+```patch
+--- b/intro_flutter_gpu/step_01/pubspec.yaml
++++ a/intro_flutter_gpu/step_01/pubspec.yaml
+@@ -23,3 +23,6 @@ dev_dependencies:
+  
+  flutter:
+    uses-material-design: true
++
++  assets:
++    - build/shaderbundles/
+```
+
+The resulting `pubspec.yaml` file will be as follows.
+
+```yaml
+name: intro_flutter_gpu
+description: "A new Flutter project."
+publish_to: 'none'
+version: 0.1.0
+
+environment:
+  sdk: ^3.7.0
+
+dependencies:
+  flutter:
+    sdk: flutter
+  flutter_gpu:
+    sdk: flutter
+  flutter_gpu_shaders: ^0.2.0
+  native_assets_cli: ^0.9.0
+  vector_math: ^2.1.4
+
+dev_dependencies:
+  flutter_test:
+    sdk: flutter
+  flutter_lints: ^5.0.0
+
+flutter:
+  uses-material-design: true
+
+  assets:
+    - build/shaderbundles/
+```
+
+The shader files are as follows. The vertex shader is called `shaders/simple.vert`
+
+```glsl
+#version 460 core
+
+in vec2 position;
+
+void main() {
+  gl_Position = vec4(position, 0.0, 1.0);
+}
+```
+
+Note, the `#version 460 core` is not required by Flutter GPU. It is included as 
+an aid to text editors and IDEs to help developers use the correct subset of 
+OpenGL Shader Language, the forward compatible OpenGL 4.6 subset.
+
+The fragment shader is called `shaders/simple.frag`
+
+```glsl
+#version 460 core
+
+out vec4 frag_color;
+
+void main() {
+  frag_color = vec4(0, 1, 0, 1);
+}
+```
+
+The shader bundle is compiled using the following configuration file to define
+which shader files are included. This file is called `my_first_triangle.shaderbundle.json`
+
+```json
+{
+    "SimpleVertex": {
+        "type": "vertex",
+        "file": "shaders/simple.vert"
+    },
+    "SimpleFragment": {
+        "type": "fragment",
+        "file": "shaders/simple.frag"
+    }
+}
+```
+
+The conversion of the OpenGL Shader Language files into the native shader bundle is
+handled by the `hook/build.dart` file
+
+```dart
+import 'package:flutter_gpu_shaders/build.dart';
+import 'package:native_assets_cli/native_assets_cli.dart';
+
+void main(List<String> args) async {
+  await build(args, (config, output) async {
+    await buildShaderBundleJson(
+      buildConfig: config,
+      buildOutput: output,
+      manifestFileName: 'my_first_triangle.shaderbundle.json',
+    );
+  });
+}
+```
+
+The dart code to load the shader bundle at run time. This file is called `lib/shaders.dart`
+
+```dart
+import 'package:flutter_gpu/gpu.dart' as gpu;
+
+const String _kShaderBundlePath =
+    'build/shaderbundles/my_first_triangle.shaderbundle';
+
+gpu.ShaderLibrary? _shaderLibrary;
+
+gpu.ShaderLibrary get shaderLibrary {
+  _shaderLibrary ??= gpu.ShaderLibrary.fromAsset(_kShaderBundlePath);
+
+  try {
+    return _shaderLibrary!;
+  } catch (e) {
+    throw Exception('Failed to load shader bundle! ($_kShaderBundlePath)');
+  }
+}
+```
+
+The main application is as follows. This file is called `lib/main.dart`
+
+```dart
+import 'dart:typed_data';
+
+import 'package:flutter/material.dart';
+import 'package:flutter_gpu/gpu.dart' as gpu;
+
+import 'shaders.dart';
+
+void main() {
+  runApp(const MainApp());
+}
+
+class MainApp extends StatelessWidget {
+  const MainApp({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return MaterialApp(
+      title: 'Flutter GPU Triangle Demo',
+      debugShowCheckedModeBanner: false,
+      home: Scaffold(
+        body: SizedBox.expand(child: CustomPaint(painter: TrianglePainter())),
+      ),
+    );
+  }
+}
+
+class TrianglePainter extends CustomPainter {
+  const TrianglePainter();
+
+  @override
+  void paint(Canvas canvas, Size size) {
+    final texture = gpu.gpuContext.createTexture(
+      gpu.StorageMode.devicePrivate,
+      size.width.ceil(),
+      size.height.ceil(),
+    );
+    if (texture == null) {
+      throw Exception('Failed to create texture');
+    }
+
+    final renderTarget = gpu.RenderTarget.singleColor(
+      gpu.ColorAttachment(texture: texture),
+    );
+
+    final commandBuffer = gpu.gpuContext.createCommandBuffer();
+    final renderPass = commandBuffer.createRenderPass(renderTarget);
+
+    final vert = shaderLibrary['SimpleVertex'];
+    if (vert == null) {
+      throw Exception('Failed to load SimpleVertex vertex shader');
+    }
+
+    final frag = shaderLibrary['SimpleFragment'];
+    if (frag == null) {
+      throw Exception('Failed to load SimpleFragment fragment shader');
+    }
+
+    final pipeline = gpu.gpuContext.createRenderPipeline(vert, frag);
+
+    const floatsPerVertex = 2;
+    final vertices = Float32List.fromList([
+      -0.5, -0.5, // First vertex
+      0.5, -0.5, // Second vertex
+      0.0, 0.5, // Third vertex
+    ]);
+
+    final verticesDeviceBuffer = gpu.gpuContext.createDeviceBufferWithCopy(
+      ByteData.sublistView(vertices),
+    );
+    if (verticesDeviceBuffer == null) {
+      throw Exception('Failed to create vertices device buffer');
+    }
+
+    renderPass.bindPipeline(pipeline);
+
+    final verticesView = gpu.BufferView(
+      verticesDeviceBuffer,
+      offsetInBytes: 0,
+      lengthInBytes: verticesDeviceBuffer.sizeInBytes,
+    );
+    renderPass.bindVertexBuffer(
+      verticesView,
+      vertices.length ~/ floatsPerVertex,
+    );
+
+    renderPass.draw();
+
+    commandBuffer.submit();
+    final image = texture.asImage();
+    canvas.drawImage(image, Offset.zero, Paint());
+  }
+
+  @override
+  bool shouldRepaint(covariant CustomPainter oldDelegate) => true;
+}
+```
+
+Note, the `renderPass.draw()` call does not force the drawing of pixels to the screen, it only
+adds the draw command to the `commandBuffer`. The `commandBuffer.submit()` call flushes the 
+command buffer to the GPU, which results in pixels being drawn to the text. The texture is 
+then converted into an image, and drawn to the screen with the `canvas.drawImage()` call.
+
+## Step 2. Colored triange.
+
+Modify `lib/main.dart` as follows
+
+```diff
+--- b/intro_flutter_gpu/step_02/lib/main.dart
++++ a/intro_flutter_gpu/step_02/lib/main.dart
+@@ -61,11 +61,12 @@ class TrianglePainter extends CustomPainter {
+  
+      final pipeline = gpu.gpuContext.createRenderPipeline(vert, frag);
+  
+-    const floatsPerVertex = 2;
++    const floatsPerVertex = 5;
+      final vertices = Float32List.fromList([
+-      -0.5, -0.5, // First vertex
+-      0.5, -0.5, // Second vertex
+-      0.0, 0.5, // Third vertex
++      // Format: x, y, r, g, b,
++      -0.5, -0.5, 1.0, 0.0, 0.0,
++      0.5, -0.5, 0.0, 1.0, 0.0,
++      0.0, 0.5, 0.0, 0.0, 1.0,
+      ]);
+  
+      final verticesDeviceBuffer = gpu.gpuContext.createDeviceBufferWithCopy(
+```
+
+Update `shaders/simple.vert` as follows
+
+```diff
+--- b/intro_flutter_gpu/step_02/shaders/simple.vert
++++ a/intro_flutter_gpu/step_02/shaders/simple.vert
+@@ -5,7 +5,11 @@
+  #version 460 core
+  
+  in vec2 position;
++in vec3 color;
++
++out vec3 vertex_color;
+  
+  void main() {
+    gl_Position = vec4(position, 0.0, 1.0);
+-}
++  vertex_color = color;
++}
+```
+
+
+Update `shaders/simple.frag` as follows
+
+```diff
+--- b/intro_flutter_gpu/step_02/shaders/simple.frag
++++ a/intro_flutter_gpu/step_02/shaders/simple.frag
+@@ -4,8 +4,9 @@
+  
+  #version 460 core
+  
++in vec3 vertex_color;
+  out vec4 frag_color;
+  
+  void main() {
+-  frag_color = vec4(0, 1, 0, 1);
++  frag_color = vec4(vertex_color, 1);
+  }
+```
+
+## Step 3. Two triangles
+
+Update `lib/main.dart` as follows
+
+```diff
+--- b/intro_flutter_gpu/step_03/lib/main.dart
++++ a/intro_flutter_gpu/step_03/lib/main.dart
+@@ -64,9 +64,15 @@ class TrianglePainter extends CustomPainter {
+      const floatsPerVertex = 5;
+      final vertices = Float32List.fromList([
+        // Format: x, y, r, g, b,
+-      -0.5, -0.5, 1.0, 0.0, 0.0,
+-      0.5, -0.5, 0.0, 1.0, 0.0,
+-      0.0, 0.5, 0.0, 0.0, 1.0,
++
++      // Traingle #1
++      -0.5, -0.5, 1.0, 0.0, 0.0, // bottom left
++      0.5, -0.5, 0.0, 1.0, 0.0, // bottom right
++      -0.5, 0.5, 0.0, 0.0, 1.0, // top left
++      // Traingle #2
++      0.5, -0.5, 0.0, 1.0, 0.0, // bottom right
++      0.5, 0.5, 1.0, 1.0, 0.0, // top right
++      -0.5, 0.5, 0.0, 0.0, 1.0, // top left
+      ]);
+  
+      final verticesDeviceBuffer = gpu.gpuContext.createDeviceBufferWithCopy(
+```
+
+## Step 4. Two triangles with broken color interpolation
+
+Update `lib/main.dart` as follows
+
+```diff
+--- b/intro_flutter_gpu/step_04/lib/main.dart
++++ a/intro_flutter_gpu/step_04/lib/main.dart
+@@ -66,13 +66,13 @@ class TrianglePainter extends CustomPainter {
+        // Format: x, y, r, g, b,
+  
+        // Traingle #1
+-      -0.5, -0.5, 1.0, 0.0, 0.0, // bottom left
+-      0.5, -0.5, 0.0, 1.0, 0.0, // bottom right
+-      -0.5, 0.5, 0.0, 0.0, 1.0, // top left
++      -0.5, -0.5, 0.0, 0.0, 1.0, // bottom left
++      0.5, -0.5, 1.0, 1.0, 0.0, // bottom right
++      -0.5, 0.5, 1.0, 0.0, 0.0, // top left
+        // Traingle #2
+-      0.5, -0.5, 0.0, 1.0, 0.0, // bottom right
+-      0.5, 0.5, 1.0, 1.0, 0.0, // top right
+-      -0.5, 0.5, 0.0, 0.0, 1.0, // top left
++      0.5, -0.5, 1.0, 1.0, 0.0, // bottom right
++      0.5, 0.5, 0.0, 1.0, 0.0, // top right
++      -0.5, 0.5, 1.0, 0.0, 0.0, // top left
+      ]);
+  
+      final verticesDeviceBuffer = gpu.gpuContext.createDeviceBufferWithCopy(
+```
+
+## Step 5. Introduce UV to fix color interpolation
+
+Update `lib/main.dart` as follows
+
+```diff
+--- b/intro_flutter_gpu/step_05/lib/main.dart
++++ a/intro_flutter_gpu/step_05/lib/main.dart
+@@ -61,18 +61,18 @@ class TrianglePainter extends CustomPainter {
+  
+      final pipeline = gpu.gpuContext.createRenderPipeline(vert, frag);
+  
+-    const floatsPerVertex = 5;
++    const floatsPerVertex = 4;
+      final vertices = Float32List.fromList([
+-      // Format: x, y, r, g, b,
++      // Format: x, y, u, v,
+  
+        // Traingle #1
+-      -0.5, -0.5, 0.0, 0.0, 1.0, // bottom left
+-      0.5, -0.5, 1.0, 1.0, 0.0, // bottom right
+-      -0.5, 0.5, 1.0, 0.0, 0.0, // top left
++      -0.5, -0.5, 0.0, 0.0, // bottom left
++      0.5, -0.5, 1.0, 0.0, // bottom right
++      -0.5, 0.5, 0.0, 1.0, // top left
+        // Traingle #2
+-      0.5, -0.5, 1.0, 1.0, 0.0, // bottom right
+-      0.5, 0.5, 0.0, 1.0, 0.0, // top right
+-      -0.5, 0.5, 1.0, 0.0, 0.0, // top left
++      0.5, -0.5, 1.0, 0.0, // bottom right
++      0.5, 0.5, 1.0, 1.0, // top right
++      -0.5, 0.5, 0.0, 1.0, // top left
+      ]);
+  
+      final verticesDeviceBuffer = gpu.gpuContext.createDeviceBufferWithCopy(
+```
+
+Modify `shaders/simple.vert` as follows
+
+```diff
+--- b/intro_flutter_gpu/step_05/shaders/simple.vert
++++ a/intro_flutter_gpu/step_05/shaders/simple.vert
+@@ -5,11 +5,11 @@
+  #version 460 core
+  
+  in vec2 position;
+-in vec3 color;
++in vec2 uv;
+  
+-out vec3 vertex_color;
++out vec2 vertex_uv;
+  
+  void main() {
+    gl_Position = vec4(position, 0.0, 1.0);
+-  vertex_color = color;
+-}
++  vertex_uv = uv;
++}
+```
+
+Modify `shaders/simple.frag` as follows
+
+```diff
+--- b/intro_flutter_gpu/step_05/shaders/simple.frag
++++ a/intro_flutter_gpu/step_05/shaders/simple.frag
+@@ -4,9 +4,16 @@
+  
+  #version 460 core
+  
+-in vec3 vertex_color;
++in vec2 vertex_uv;
+  out vec4 frag_color;
+  
++const vec4 top_left_color = vec4(1, 0, 0, 1);
++const vec4 top_right_color = vec4(0, 1, 0, 1);
++const vec4 bottom_left_color = vec4(0, 0, 1, 1);
++const vec4 bottom_right_color = vec4(1, 1, 0, 1);
++
+  void main() {
+-  frag_color = vec4(vertex_color, 1);
++  frag_color =
++      mix(mix(bottom_left_color, bottom_right_color, vertex_uv.x),
++          mix(top_left_color, top_right_color, vertex_uv.x), vertex_uv.y);
+  }
+```
+
+## Step 6. Rendering a Madelbrot
+
+Update `lib/main.dart` as follows
+
+```diff
+--- b/intro_flutter_gpu/step_06/lib/main.dart
++++ a/intro_flutter_gpu/step_06/lib/main.dart
+@@ -66,13 +66,13 @@ class TrianglePainter extends CustomPainter {
+        // Format: x, y, u, v,
+  
+        // Traingle #1
+-      -0.5, -0.5, 0.0, 0.0, // bottom left
+-      0.5, -0.5, 1.0, 0.0, // bottom right
+-      -0.5, 0.5, 0.0, 1.0, // top left
++      -0.8, -0.8, -1.0, -1.0, // bottom left
++      0.8, -0.8, 1.0, -1.0, // bottom right
++      -0.8, 0.8, -1.0, 1.0, // top left
+        // Traingle #2
+-      0.5, -0.5, 1.0, 0.0, // bottom right
+-      0.5, 0.5, 1.0, 1.0, // top right
+-      -0.5, 0.5, 0.0, 1.0, // top left
++      0.8, -0.8, 1.0, -1.0, // bottom right
++      0.8, 0.8, 1.0, 1.0, // top right
++      -0.8, 0.8, -1.0, 1.0, // top left
+      ]);
+  
+      final verticesDeviceBuffer = gpu.gpuContext.createDeviceBufferWithCopy(
+```
+
+Modify `shaders/simple.frag` as follows
+
+```diff
+--- b/intro_flutter_gpu/step_06/shaders/simple.frag
++++ a/intro_flutter_gpu/step_06/shaders/simple.frag
+@@ -7,13 +7,27 @@
+  in vec2 vertex_uv;
+  out vec4 frag_color;
+  
+-const vec4 top_left_color = vec4(1, 0, 0, 1);
+-const vec4 top_right_color = vec4(0, 1, 0, 1);
+-const vec4 bottom_left_color = vec4(0, 0, 1, 1);
+-const vec4 bottom_right_color = vec4(1, 1, 0, 1);
++// Adapted from https://www.youtube.com/shorts/h5PuIm6fRr8
++float mandelbrot(vec2 uv) {
++  const float MAX_ITER = 128;
++  vec2 c =  1.2 * uv - vec2(0.7, 0.0);
++  vec2 z = vec2(0.0);
++
++  for (float iter = 0.0; iter < MAX_ITER; iter++) {
++    z = vec2(z.x * z.x - z.y * z.y, 2.0 * z.x * z.y) + c;
++    if (length(z) > 4.0) {
++      return iter / MAX_ITER;
++    }
++  }
++
++  return 0.0;
++}
++
+  
+  void main() {
+-  frag_color =
+-      mix(mix(bottom_left_color, bottom_right_color, vertex_uv.x),
+-          mix(top_left_color, top_right_color, vertex_uv.x), vertex_uv.y);
++    float m = mandelbrot(vertex_uv);
++    vec3 col = vec3(m);
++    col = pow(col, vec3(0.4545, 0.3, 0.1));
++    frag_color = vec4(col, 1.0);
++
+  }
+```
+
+## Step 7. Broken 3D animation
+
+Update `lib/main.dart` as follows
+
+```diff
+--- b/intro_flutter_gpu/step_07/lib/main.dart
++++ a/intro_flutter_gpu/step_07/lib/main.dart
+@@ -2,10 +2,12 @@
+  // Use of this source code is governed by a BSD-style license that can be
+  // found in the LICENSE file.
+  
++import 'dart:math' as math;
+  import 'dart:typed_data';
+  
+  import 'package:flutter/material.dart';
+  import 'package:flutter_gpu/gpu.dart' as gpu;
++import 'package:vector_math/vector_math.dart' as vm;
+  
+  import 'shaders.dart';
+  
+@@ -13,23 +15,58 @@ void main() {
+    runApp(const MainApp());
+  }
+  
+-class MainApp extends StatelessWidget {
++class MainApp extends StatefulWidget {
+    const MainApp({super.key});
+  
++  @override
++  State<MainApp> createState() => _MainAppState();
++}
++
++class _MainAppState extends State<MainApp> with SingleTickerProviderStateMixin {
++  late AnimationController _controller;
++  late Animation<double> _animation;
++
++  @override
++  void initState() {
++    super.initState();
++    _controller = AnimationController(
++      duration: const Duration(seconds: 15),
++      vsync: this,
++    )..repeat();
++
++    _animation = Tween<double>(begin: 0, end: 2 * math.pi).animate(_controller);
++  }
++
++  @override
++  void dispose() {
++    _controller.dispose();
++    super.dispose();
++  }
++
+    @override
+    Widget build(BuildContext context) {
+      return MaterialApp(
+        title: 'Flutter GPU Triangle Demo',
+        debugShowCheckedModeBanner: false,
+        home: Scaffold(
+-        body: SizedBox.expand(child: CustomPaint(painter: TrianglePainter())),
++        body: SizedBox.expand(
++          child: AnimatedBuilder(
++            builder: (context, child) {
++              return CustomPaint(
++                painter: TrianglePainter(angle: _animation.value),
++              );
++            },
++            animation: _animation,
++          ),
++        ),
+        ),
+      );
+    }
+  }
+  
+  class TrianglePainter extends CustomPainter {
+-  const TrianglePainter();
++  const TrianglePainter({required this.angle});
++  final double angle;
+  
+    @override
+    void paint(Canvas canvas, Size size) {
+@@ -82,6 +119,20 @@ class TrianglePainter extends CustomPainter {
+        throw Exception('Failed to create vertices device buffer');
+      }
+  
++    final model = vm.Matrix4.rotationY(angle);
++
++    final vertUniforms = [model];
++
++    final vertUniformsDeviceBuffer = gpu.gpuContext.createDeviceBufferWithCopy(
++      ByteData.sublistView(
++        Float32List.fromList(vertUniforms.expand((m) => m.storage).toList()),
++      ),
++    );
++
++    if (vertUniformsDeviceBuffer == null) {
++      throw Exception('Failed to create vert uniforms device buffer');
++    }
++
+      renderPass.bindPipeline(pipeline);
+  
+      final verticesView = gpu.BufferView(
+@@ -94,6 +145,14 @@ class TrianglePainter extends CustomPainter {
+        vertices.length ~/ floatsPerVertex,
+      );
+  
++    final vertUniformsView = gpu.BufferView(
++      vertUniformsDeviceBuffer,
++      offsetInBytes: 0,
++      lengthInBytes: vertUniformsDeviceBuffer.sizeInBytes,
++    );
++
++    renderPass.bindUniform(vert.getUniformSlot('VertInfo'), vertUniformsView);
++
+      renderPass.draw();
+  
+      commandBuffer.submit();
+```
+
+Modify `shaders/simple.vert` as follows
+
+```diff
+--- b/intro_flutter_gpu/step_07/shaders/simple.vert
++++ a/intro_flutter_gpu/step_07/shaders/simple.vert
+@@ -9,7 +9,11 @@ in vec2 uv;
+  
+  out vec2 vertex_uv;
+  
++uniform VertInfo {
++  mat4 model;
++};
++
+  void main() {
+-  gl_Position = vec4(position, 0.0, 1.0);
++  gl_Position = model * vec4(position, 0.0, 1.0);
+    vertex_uv = uv;
+  }
+```
+
+## Step 8. Fixing 3D animation with Model, View and Projection matrices
+
+Update `lib/main.dart` as follows
+
+```diff
+--- b/intro_flutter_gpu/step_08/lib/main.dart
++++ a/intro_flutter_gpu/step_08/lib/main.dart
+@@ -120,8 +120,15 @@ class TrianglePainter extends CustomPainter {
+      }
+  
+      final model = vm.Matrix4.rotationY(angle);
++    final view = vm.Matrix4.translation(vm.Vector3(0.0, 0.0, -2.0));
++    final projection = vm.makePerspectiveMatrix(
++      vm.radians(45),
++      size.aspectRatio,
++      0.1,
++      100,
++    );
+  
+-    final vertUniforms = [model];
++    final vertUniforms = [model, view, projection];
+  
+      final vertUniformsDeviceBuffer = gpu.gpuContext.createDeviceBufferWithCopy(
+        ByteData.sublistView(
+```
+
+Modify `shaders/simple.vert` as follows
+
+```diff
+--- b/intro_flutter_gpu/step_08/shaders/simple.vert
++++ a/intro_flutter_gpu/step_08/shaders/simple.vert
+@@ -11,9 +11,11 @@ out vec2 vertex_uv;
+  
+  uniform VertInfo {
+    mat4 model;
++  mat4 view;
++  mat4 projection;
+  };
+  
+  void main() {
+-  gl_Position = model * vec4(position, 0.0, 1.0);
++  gl_Position = projection * view * model * vec4(position, 0.0, 1.0);
+    vertex_uv = uv;
+  }
+```
+
+## Step 9. Rendering a rotating cube
+
+Update `lib/main.dart` as follows
+
+```diff
+--- b/intro_flutter_gpu/step_09/lib/main.dart
++++ a/intro_flutter_gpu/step_09/lib/main.dart
+@@ -98,18 +98,57 @@ class TrianglePainter extends CustomPainter {
+  
+      final pipeline = gpu.gpuContext.createRenderPipeline(vert, frag);
+  
+-    const floatsPerVertex = 4;
++    const floatsPerVertex = 6;
+      final vertices = Float32List.fromList([
+-      // Format: x, y, u, v,
+-
+-      // Traingle #1
+-      -0.8, -0.8, -1.0, -1.0, // bottom left
+-      0.8, -0.8, 1.0, -1.0, // bottom right
+-      -0.8, 0.8, -1.0, 1.0, // top left
+-      // Traingle #2
+-      0.8, -0.8, 1.0, -1.0, // bottom right
+-      0.8, 0.8, 1.0, 1.0, // top right
+-      -0.8, 0.8, -1.0, 1.0, // top left
++      // layout: x, y, z, r, g, b
++
++      // Back Face
++      -0.5, -0.5, -0.5, 1.0, 0.0, 0.0,
++      0.5, -0.5, -0.5, 0.0, 1.0, 0.0,
++      0.5, 0.5, -0.5, 0.0, 0.0, 1.0,
++      0.5, 0.5, -0.5, 0.0, 0.0, 1.0,
++      -0.5, 0.5, -0.5, 1.0, 1.0, 0.0,
++      -0.5, -0.5, -0.5, 1.0, 0.0, 0.0,
++
++      // Front Face
++      -0.5, -0.5, 0.5, 1.0, 0.0, 0.0,
++      0.5, 0.5, 0.5, 0.0, 0.0, 1.0,
++      0.5, -0.5, 0.5, 0.0, 1.0, 0.0,
++      0.5, 0.5, 0.5, 0.0, 0.0, 1.0,
++      -0.5, -0.5, 0.5, 1.0, 0.0, 0.0,
++      -0.5, 0.5, 0.5, 1.0, 1.0, 0.0,
++
++      // Left Face
++      -0.5, 0.5, 0.5, 1.0, 0.0, 0.0,
++      -0.5, -0.5, -0.5, 0.0, 0.0, 1.0,
++      -0.5, 0.5, -0.5, 0.0, 1.0, 0.0,
++      -0.5, -0.5, -0.5, 0.0, 0.0, 1.0,
++      -0.5, 0.5, 0.5, 1.0, 0.0, 0.0,
++      -0.5, -0.5, 0.5, 1.0, 1.0, 0.0,
++
++      // Right Face
++      0.5, 0.5, 0.5, 1.0, 0.0, 0.0,
++      0.5, 0.5, -0.5, 0.0, 1.0, 0.0,
++      0.5, -0.5, -0.5, 0.0, 0.0, 1.0,
++      0.5, -0.5, -0.5, 0.0, 0.0, 1.0,
++      0.5, -0.5, 0.5, 1.0, 1.0, 0.0,
++      0.5, 0.5, 0.5, 1.0, 0.0, 0.0,
++
++      // Bottom Face
++      0.5, -0.5, -0.5, 0.0, 1.0, 0.0,
++      -0.5, -0.5, -0.5, 1.0, 0.0, 0.0,
++      0.5, -0.5, 0.5, 0.0, 0.0, 1.0,
++      -0.5, -0.5, 0.5, 1.0, 1.0, 0.0,
++      0.5, -0.5, 0.5, 0.0, 0.0, 1.0,
++      -0.5, -0.5, -0.5, 1.0, 0.0, 0.0,
++
++      // Top Face
++      -0.5, 0.5, -0.5, 1.0, 0.0, 0.0,
++      0.5, 0.5, -0.5, 0.0, 1.0, 0.0,
++      0.5, 0.5, 0.5, 0.0, 0.0, 1.0,
++      0.5, 0.5, 0.5, 0.0, 0.0, 1.0,
++      -0.5, 0.5, 0.5, 1.0, 1.0, 0.0,
++      -0.5, 0.5, -0.5, 1.0, 0.0, 0.0,
+      ]);
+  
+      final verticesDeviceBuffer = gpu.gpuContext.createDeviceBufferWithCopy(
+```
+
+Update `shaders/simple.frag` as follows
+
+```diff
+--- b/intro_flutter_gpu/step_09/shaders/simple.frag
++++ a/intro_flutter_gpu/step_09/shaders/simple.frag
+@@ -4,30 +4,9 @@
+  
+  #version 460 core
+  
+-in vec2 vertex_uv;
++in vec3 vertex_color;
+  out vec4 frag_color;
+  
+-// Adapted from https://www.youtube.com/shorts/h5PuIm6fRr8
+-float mandelbrot(vec2 uv) {
+-  const float MAX_ITER = 128;
+-  vec2 c =  1.2 * uv - vec2(0.7, 0.0);
+-  vec2 z = vec2(0.0);
+-
+-  for (float iter = 0.0; iter < MAX_ITER; iter++) {
+-    z = vec2(z.x * z.x - z.y * z.y, 2.0 * z.x * z.y) + c;
+-    if (length(z) > 4.0) {
+-      return iter / MAX_ITER;
+-    }
+-  }
+-
+-  return 0.0;
+-}
+-
+-
+-void main() {
+-    float m = mandelbrot(vertex_uv);
+-    vec3 col = vec3(m);
+-    col = pow(col, vec3(0.4545, 0.3, 0.1));
+-    frag_color = vec4(col, 1.0);
+-
++void main() { 
++  frag_color = vec4(vertex_color, 1.0); 
+  }
+```
+
+Update `shaders/simple.vert` as follows
+
+```diff
+--- b/intro_flutter_gpu/step_09/shaders/simple.vert
++++ a/intro_flutter_gpu/step_09/shaders/simple.vert
+@@ -4,10 +4,10 @@
+  
+  #version 460 core
+  
+-in vec2 position;
+-in vec2 uv;
++in vec3 position;
++in vec3 color;
+  
+-out vec2 vertex_uv;
++out vec3 vertex_color;
+  
+  uniform VertInfo {
+    mat4 model;
+@@ -16,6 +16,6 @@ uniform VertInfo {
+  };
+  
+  void main() {
+-  gl_Position = projection * view * model * vec4(position, 0.0, 1.0);
+-  vertex_uv = uv;
++  gl_Position = projection * view * model * vec4(position, 1.0);
++  vertex_color = color;
+  }
+```
+
+## Step 10. Adding back face culling
+
+Modify `lib/main.dart` as follows
+
+
+```diff
+--- b/intro_flutter_gpu/step_10/lib/main.dart
++++ a/intro_flutter_gpu/step_10/lib/main.dart
+@@ -181,6 +181,8 @@ class TrianglePainter extends CustomPainter {
+  
+      renderPass.bindPipeline(pipeline);
+  
++    renderPass.setCullMode(gpu.CullMode.backFace);
++
+      final verticesView = gpu.BufferView(
+        verticesDeviceBuffer,
+        offsetInBytes: 0,
+```
+
+## Step 11. Rotating in two dimensions
+
+Update `liob/main.dart` as follows
+
+```diff
+--- b/intro_flutter_gpu/step_11/lib/main.dart
++++ a/intro_flutter_gpu/step_11/lib/main.dart
+@@ -30,11 +30,11 @@ class _MainAppState extends State<MainApp> with SingleTickerProviderStateMixin {
+    void initState() {
+      super.initState();
+      _controller = AnimationController(
+-      duration: const Duration(seconds: 15),
++      duration: const Duration(seconds: 30),
+        vsync: this,
+      )..repeat();
+  
+-    _animation = Tween<double>(begin: 0, end: 2 * math.pi).animate(_controller);
++    _animation = Tween<double>(begin: 0, end: 4 * math.pi).animate(_controller);
+    }
+  
+    @override
+@@ -158,8 +158,11 @@ class TrianglePainter extends CustomPainter {
+        throw Exception('Failed to create vertices device buffer');
+      }
+  
+-    final model = vm.Matrix4.rotationY(angle);
+-    final view = vm.Matrix4.translation(vm.Vector3(0.0, 0.0, -2.0));
++    final model =
++        vm.Matrix4.identity()
++          ..rotateY(angle)
++          ..rotateX(angle / 2);
++    final view = vm.Matrix4.translation(vm.Vector3(0.0, 0.0, -2.5));
+      final projection = vm.makePerspectiveMatrix(
+        vm.radians(45),
+        size.aspectRatio,
+```
+
+## Step 12. Use Flutter Scene
+
+Drop `flutter_gpu` dependencies
+
+```console
+$ flutter pub remove flutter_gpu flutter_gpu_shaders
+```
+
+Add `flutter_scene` dependencies
+
+```console
+$ flutter pub add flutter_scene flutter_scene_importer
+```
+
+This will update `pubspec.yaml` as follows.
+
+```yaml
+name: intro_flutter_gpu
+description: "A new Flutter project."
+publish_to: 'none'
+version: 0.1.0
+
+environment:
+  sdk: ^3.7.0-0
+
+dependencies:
+  flutter:
+    sdk: flutter
+  flutter_scene: ^0.7.0-0
+  flutter_scene_importer: ^0.7.0-0
+  native_assets_cli: ^0.9.0
+  vector_math: ^2.1.4
+
+dev_dependencies:
+  flutter_test:
+    sdk: flutter
+  flutter_lints: ^5.0.0
+
+flutter:
+  uses-material-design: true
+
+  assets:
+    - build/models/
+```
+
+Remove the `my_first_triangle.shaderbundle.json` file and shaders
+
+```console
+$ rm my_first_triangle.shaderbundle.json
+$ rm lib/shaders.dart
+$ rm shaders/simple.vert
+$ rm shaders/simple.frag
+```
+
+Update `lib/main.dart` as follows
+
+```diff
+--- b/intro_flutter_gpu/step_12/pubspec.yaml
++++ a/intro_flutter_gpu/step_12/pubspec.yaml
+@@ -24,4 +24,4 @@ flutter:
+    uses-material-design: true
+  
+    assets:
+-    - build/shaderbundles/
++    - build/models/
+```
+
+Add a 3D asset `assets/building-port.glb` from [kenney.nl/assets/hexagon-kit](https://kenney.nl/assets/hexagon-kit) in glTF format.
+
+Update `hooks/build.dart` as follows
+
+```diff
+--- b/intro_flutter_gpu/step_12/hook/build.dart
++++ a/intro_flutter_gpu/step_12/hook/build.dart
+@@ -2,15 +2,14 @@
+  // Use of this source code is governed by a BSD-style license that can be
+  // found in the LICENSE file.
+  
+-import 'package:flutter_gpu_shaders/build.dart';
++import 'package:flutter_scene_importer/build_hooks.dart';
+  import 'package:native_assets_cli/native_assets_cli.dart';
+  
+-void main(List<String> args) async {
+-  await build(args, (config, output) async {
+-    await buildShaderBundleJson(
++void main(List<String> args) {
++  build(args, (config, output) async {
++    buildModels(
+        buildConfig: config,
+-      buildOutput: output,
+-      manifestFileName: 'my_first_triangle.shaderbundle.json',
++      inputFilePaths: ['assets/building-port.glb'],
+      );
+    });
+  }
+```
+
+Replace `lib/main.dart` with the following 
+
+```dart
+import 'dart:math' as math;
+
+import 'package:flutter/material.dart';
+import 'package:flutter_scene/scene.dart' as scn;
+import 'package:vector_math/vector_math.dart' as vm;
+
+void main() {
+  runApp(
+    MainApp(staticResourcesInitialized: scn.Scene.initializeStaticResources()),
+  );
+}
+
+class MainApp extends StatefulWidget {
+  const MainApp({super.key, required this.staticResourcesInitialized});
+
+  final Future<void> staticResourcesInitialized;
+
+  @override
+  State<MainApp> createState() => _MainAppState();
+}
+
+class _MainAppState extends State<MainApp> with SingleTickerProviderStateMixin {
+  late AnimationController _controller;
+  late Animation<double> _animation;
+  final scene = scn.Scene();
+
+  @override
+  void initState() {
+    super.initState();
+    _controller = AnimationController(
+      duration: const Duration(seconds: 30),
+      vsync: this,
+    )..repeat();
+
+    _animation = Tween<double>(begin: 0, end: 4 * math.pi).animate(_controller);
+
+    scn.Node.fromAsset('build/models/building-port.model').then((model) {
+      model.name = 'Port Building';
+      scene.add(model);
+    });
+  }
+
+  @override
+  void dispose() {
+    _controller.dispose();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return MaterialApp(
+      title: 'Hexagon Explorer',
+      debugShowCheckedModeBanner: false,
+      home: Scaffold(
+        body: SizedBox.expand(
+          child: FutureBuilder(
+            future: widget.staticResourcesInitialized,
+            builder: (context, snapshot) {
+              if (snapshot.connectionState != ConnectionState.done) {
+                return const Center(child: CircularProgressIndicator());
+              }
+              return AnimatedBuilder(
+                builder: (context, child) {
+                  return CustomPaint(
+                    painter: ScenePainter(
+                      scene: scene,
+                      camera: scn.PerspectiveCamera(
+                        position: vm.Vector3(
+                          math.sin(_animation.value) * 3,
+                          2,
+                          math.cos(_animation.value) * 3,
+                        ),
+                        target: vm.Vector3(0, 0, 0),
+                      ),
+                    ),
+                  );
+                },
+                animation: _animation,
+              );
+            },
+          ),
+        ),
+      ),
+    );
+  }
+}
+
+class ScenePainter extends CustomPainter {
+  ScenePainter({required this.scene, required this.camera});
+  final scn.Scene scene;
+  final scn.Camera camera;
+
+  @override
+  void paint(Canvas canvas, Size size) {
+    scene.render(camera, canvas, viewport: Offset.zero & size);
+  }
+
+  @override
+  bool shouldRepaint(covariant CustomPainter oldDelegate) => true;
+}
+```
+
+**1. Visuals and Assets:**
+
+*   **Screenshots/GIFs:**
+    *   Do not worry about screenshots, these will be added later.
+    *   Screenshots will be taken manually, not programmatically.
+*   **3D Asset for Step 12:**
+    *   There is only one `building-port.glb` asset in the linked asset pack.
+    *   The asset in question is covered by CC0 and is hosted on Github with the rest of the codelab code
+    *   The user should download the linked asset pack and extract the glTF asset.
+
+**2. Code Details and Implementation:**
+
+*   **Error Handling Strategy:**
+    *   No additional `try-catch` strategy needs to be added to this code. Productionising this code is not a concern of this codelab.
+
+*   **Step 6: Mandelbrot Color Mapping:**
+    *   The mandelbrot color mapping is currently sufficient to demonstrate computing in shaders.
+
+*   **Step 7/8: Animation Smoothing:**
+    *  No smoothing is required at this point
+
+*   **Step 9: Cube Data Generation:**
+    *   The cube data will stay as data, it won't be programmatically generated.
+
+*   **Step 12: `flutter_scene` Usage:**
+    *   The model is appropriately scaled and positioned for the rotating camera
+    *   The model will not be lit
+    *   The shader bundle and 3D assets are rebuilt automatically by the `hook/build.dart` script
+
+**3. Codelab Platform and Format:**
+
+*   The codelab code will be hosted at https://github.com/flutter/codelabs
+*   The codelab should have a tone of informal conversational prose.
+*   The level of detail should be appropriate for intermediate developers.
+*   Assume the developers understand Flutter programming.
+*   Assume the developers are seeing 3D programming for the first time.
+
+**4. Testing and Validation:**
+
+*   The codelab code is tested under CI on Github.com
+*   This code requires Flutter version 3.28 to have the required APIs exposed from `flutter_gpu`
+*   The code for this codelab will be hosted on github.com/flutter/codelabs with each step's code broken out separately
+
+**5. Content and Explanations:**
+
+*   **Depth of Explanations:**
+    *   Please introduce each of the following concepts:
+        *   GLSL basics.
+        *   Storage modes.
+        *   Attribute interpolation.
+        *   UV Mapping.
+        *   Mandelbrot formula.
+        *   Camera and perspective.
+        *   Matrix operations and order.
+        *   `flutter_scene` features and benefits.
+*   **Diagram Creation:**
+    *   No diagrams are required
+
+
+Notes
+  - You do not need to run `dart run hook/build.dart` as this is automatically handled by the `native_assets_cli` infrastructure.
+  - Do not mention triangle strips. Flutter GPU does not support them.
+
+**Title:** Introduction to Flutter GPU
+
+**Target Audience:** Intermediate Flutter developers with little to no experience in 3D graphics programming.
+
+**Prerequisites:**
+
+*   Flutter SDK version 3.28 or later (includes Dart 3.7).
+*   Basic understanding of Flutter development (Widgets, layouts, state management).
+*   Familiarity with the command-line interface.
+
+**Learning Objectives:**
+
+*   Understand the basics of GPU programming in Flutter using Impeller.
+*   Learn how to create and compile shader programs (GLSL).
+*   Learn how to create and manage GPU resources like textures and buffers.
+*   Understand vertex and fragment shaders and their roles.
+*   Draw basic shapes (triangles) using Flutter GPU.
+*   Implement attribute interpolation for smooth color transitions.
+*   Learn about UV mapping to apply colors to triangles.
+*   Compute a Mandelbrot set in a fragment shader.
+*   Introduce basic 3D concepts like model, view, and projection matrices.
+*   Animate 3D objects using matrix transformations.
+*   Implement back-face culling for optimization.
+*   Learn how to use `flutter_scene` to load and render 3D models from assets.
+
+**Supported Platforms**
+
+* This codelab will target iOS, Android, macOS, Windows and Linux.
+* Impeller is the default engine for iOS.
+* Impeller is available on Android for newer devices.
+* Impeller is available behind a flag on macOS, Windows and Linux.
+
diff --git a/intro_flutter_gpu/step_01/android/.gitignore b/intro_flutter_gpu/step_01/android/.gitignore
index 55afd919c6..be3943c96d 100644
--- a/intro_flutter_gpu/step_01/android/.gitignore
+++ b/intro_flutter_gpu/step_01/android/.gitignore
@@ -5,6 +5,7 @@ gradle-wrapper.jar
 /gradlew.bat
 /local.properties
 GeneratedPluginRegistrant.java
+.cxx/
 
 # Remember to never publicly share your keystore.
 # See https://flutter.dev/to/reference-keystore
diff --git a/intro_flutter_gpu/step_01/android/app/build.gradle.kts b/intro_flutter_gpu/step_01/android/app/build.gradle.kts
index 857326fb7b..ba03f47e22 100644
--- a/intro_flutter_gpu/step_01/android/app/build.gradle.kts
+++ b/intro_flutter_gpu/step_01/android/app/build.gradle.kts
@@ -11,12 +11,12 @@ android {
     ndkVersion = flutter.ndkVersion
 
     compileOptions {
-        sourceCompatibility = JavaVersion.VERSION_1_8
-        targetCompatibility = JavaVersion.VERSION_1_8
+        sourceCompatibility = JavaVersion.VERSION_11
+        targetCompatibility = JavaVersion.VERSION_11
     }
 
     kotlinOptions {
-        jvmTarget = JavaVersion.VERSION_1_8.toString()
+        jvmTarget = JavaVersion.VERSION_11.toString()
     }
 
     defaultConfig {
diff --git a/intro_flutter_gpu/step_01/android/app/src/main/kotlin/com/example/intro_flutter_gpu/MainActivity.kt b/intro_flutter_gpu/step_01/android/app/src/main/kotlin/com/example/intro_flutter_gpu/MainActivity.kt
index 28c6a72dea..309b877fe4 100644
--- a/intro_flutter_gpu/step_01/android/app/src/main/kotlin/com/example/intro_flutter_gpu/MainActivity.kt
+++ b/intro_flutter_gpu/step_01/android/app/src/main/kotlin/com/example/intro_flutter_gpu/MainActivity.kt
@@ -2,4 +2,4 @@ package com.example.intro_flutter_gpu
 
 import io.flutter.embedding.android.FlutterActivity
 
-class MainActivity: FlutterActivity()
+class MainActivity : FlutterActivity()
diff --git a/intro_flutter_gpu/step_01/linux/.gitignore b/intro_flutter_gpu/step_01/linux/.gitignore
new file mode 100644
index 0000000000..d3896c9844
--- /dev/null
+++ b/intro_flutter_gpu/step_01/linux/.gitignore
@@ -0,0 +1 @@
+flutter/ephemeral
diff --git a/intro_flutter_gpu/step_01/linux/CMakeLists.txt b/intro_flutter_gpu/step_01/linux/CMakeLists.txt
new file mode 100644
index 0000000000..a487a7465e
--- /dev/null
+++ b/intro_flutter_gpu/step_01/linux/CMakeLists.txt
@@ -0,0 +1,128 @@
+# Project-level configuration.
+cmake_minimum_required(VERSION 3.13)
+project(runner LANGUAGES CXX)
+
+# The name of the executable created for the application. Change this to change
+# the on-disk name of your application.
+set(BINARY_NAME "intro_flutter_gpu")
+# The unique GTK application identifier for this application. See:
+# https://wiki.gnome.org/HowDoI/ChooseApplicationID
+set(APPLICATION_ID "com.example.intro_flutter_gpu")
+
+# Explicitly opt in to modern CMake behaviors to avoid warnings with recent
+# versions of CMake.
+cmake_policy(SET CMP0063 NEW)
+
+# Load bundled libraries from the lib/ directory relative to the binary.
+set(CMAKE_INSTALL_RPATH "$ORIGIN/lib")
+
+# Root filesystem for cross-building.
+if(FLUTTER_TARGET_PLATFORM_SYSROOT)
+  set(CMAKE_SYSROOT ${FLUTTER_TARGET_PLATFORM_SYSROOT})
+  set(CMAKE_FIND_ROOT_PATH ${CMAKE_SYSROOT})
+  set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+  set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
+  set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+  set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+endif()
+
+# Define build configuration options.
+if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
+  set(CMAKE_BUILD_TYPE "Debug" CACHE
+    STRING "Flutter build mode" FORCE)
+  set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS
+    "Debug" "Profile" "Release")
+endif()
+
+# Compilation settings that should be applied to most targets.
+#
+# Be cautious about adding new options here, as plugins use this function by
+# default. In most cases, you should add new options to specific targets instead
+# of modifying this function.
+function(APPLY_STANDARD_SETTINGS TARGET)
+  target_compile_features(${TARGET} PUBLIC cxx_std_14)
+  target_compile_options(${TARGET} PRIVATE -Wall -Werror)
+  target_compile_options(${TARGET} PRIVATE "$<$<NOT:$<CONFIG:Debug>>:-O3>")
+  target_compile_definitions(${TARGET} PRIVATE "$<$<NOT:$<CONFIG:Debug>>:NDEBUG>")
+endfunction()
+
+# Flutter library and tool build rules.
+set(FLUTTER_MANAGED_DIR "${CMAKE_CURRENT_SOURCE_DIR}/flutter")
+add_subdirectory(${FLUTTER_MANAGED_DIR})
+
+# System-level dependencies.
+find_package(PkgConfig REQUIRED)
+pkg_check_modules(GTK REQUIRED IMPORTED_TARGET gtk+-3.0)
+
+# Application build; see runner/CMakeLists.txt.
+add_subdirectory("runner")
+
+# Run the Flutter tool portions of the build. This must not be removed.
+add_dependencies(${BINARY_NAME} flutter_assemble)
+
+# Only the install-generated bundle's copy of the executable will launch
+# correctly, since the resources must in the right relative locations. To avoid
+# people trying to run the unbundled copy, put it in a subdirectory instead of
+# the default top-level location.
+set_target_properties(${BINARY_NAME}
+  PROPERTIES
+  RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/intermediates_do_not_run"
+)
+
+
+# Generated plugin build rules, which manage building the plugins and adding
+# them to the application.
+include(flutter/generated_plugins.cmake)
+
+
+# === Installation ===
+# By default, "installing" just makes a relocatable bundle in the build
+# directory.
+set(BUILD_BUNDLE_DIR "${PROJECT_BINARY_DIR}/bundle")
+if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
+  set(CMAKE_INSTALL_PREFIX "${BUILD_BUNDLE_DIR}" CACHE PATH "..." FORCE)
+endif()
+
+# Start with a clean build bundle directory every time.
+install(CODE "
+  file(REMOVE_RECURSE \"${BUILD_BUNDLE_DIR}/\")
+  " COMPONENT Runtime)
+
+set(INSTALL_BUNDLE_DATA_DIR "${CMAKE_INSTALL_PREFIX}/data")
+set(INSTALL_BUNDLE_LIB_DIR "${CMAKE_INSTALL_PREFIX}/lib")
+
+install(TARGETS ${BINARY_NAME} RUNTIME DESTINATION "${CMAKE_INSTALL_PREFIX}"
+  COMPONENT Runtime)
+
+install(FILES "${FLUTTER_ICU_DATA_FILE}" DESTINATION "${INSTALL_BUNDLE_DATA_DIR}"
+  COMPONENT Runtime)
+
+install(FILES "${FLUTTER_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+  COMPONENT Runtime)
+
+foreach(bundled_library ${PLUGIN_BUNDLED_LIBRARIES})
+  install(FILES "${bundled_library}"
+    DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+    COMPONENT Runtime)
+endforeach(bundled_library)
+
+# Copy the native assets provided by the build.dart from all packages.
+set(NATIVE_ASSETS_DIR "${PROJECT_BUILD_DIR}native_assets/linux/")
+install(DIRECTORY "${NATIVE_ASSETS_DIR}"
+   DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+   COMPONENT Runtime)
+
+# Fully re-copy the assets directory on each build to avoid having stale files
+# from a previous install.
+set(FLUTTER_ASSET_DIR_NAME "flutter_assets")
+install(CODE "
+  file(REMOVE_RECURSE \"${INSTALL_BUNDLE_DATA_DIR}/${FLUTTER_ASSET_DIR_NAME}\")
+  " COMPONENT Runtime)
+install(DIRECTORY "${PROJECT_BUILD_DIR}/${FLUTTER_ASSET_DIR_NAME}"
+  DESTINATION "${INSTALL_BUNDLE_DATA_DIR}" COMPONENT Runtime)
+
+# Install the AOT library on non-Debug builds only.
+if(NOT CMAKE_BUILD_TYPE MATCHES "Debug")
+  install(FILES "${AOT_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+    COMPONENT Runtime)
+endif()
diff --git a/intro_flutter_gpu/step_01/linux/flutter/CMakeLists.txt b/intro_flutter_gpu/step_01/linux/flutter/CMakeLists.txt
new file mode 100644
index 0000000000..d5bd01648a
--- /dev/null
+++ b/intro_flutter_gpu/step_01/linux/flutter/CMakeLists.txt
@@ -0,0 +1,88 @@
+# This file controls Flutter-level build steps. It should not be edited.
+cmake_minimum_required(VERSION 3.10)
+
+set(EPHEMERAL_DIR "${CMAKE_CURRENT_SOURCE_DIR}/ephemeral")
+
+# Configuration provided via flutter tool.
+include(${EPHEMERAL_DIR}/generated_config.cmake)
+
+# TODO: Move the rest of this into files in ephemeral. See
+# https://github.com/flutter/flutter/issues/57146.
+
+# Serves the same purpose as list(TRANSFORM ... PREPEND ...),
+# which isn't available in 3.10.
+function(list_prepend LIST_NAME PREFIX)
+    set(NEW_LIST "")
+    foreach(element ${${LIST_NAME}})
+        list(APPEND NEW_LIST "${PREFIX}${element}")
+    endforeach(element)
+    set(${LIST_NAME} "${NEW_LIST}" PARENT_SCOPE)
+endfunction()
+
+# === Flutter Library ===
+# System-level dependencies.
+find_package(PkgConfig REQUIRED)
+pkg_check_modules(GTK REQUIRED IMPORTED_TARGET gtk+-3.0)
+pkg_check_modules(GLIB REQUIRED IMPORTED_TARGET glib-2.0)
+pkg_check_modules(GIO REQUIRED IMPORTED_TARGET gio-2.0)
+
+set(FLUTTER_LIBRARY "${EPHEMERAL_DIR}/libflutter_linux_gtk.so")
+
+# Published to parent scope for install step.
+set(FLUTTER_LIBRARY ${FLUTTER_LIBRARY} PARENT_SCOPE)
+set(FLUTTER_ICU_DATA_FILE "${EPHEMERAL_DIR}/icudtl.dat" PARENT_SCOPE)
+set(PROJECT_BUILD_DIR "${PROJECT_DIR}/build/" PARENT_SCOPE)
+set(AOT_LIBRARY "${PROJECT_DIR}/build/lib/libapp.so" PARENT_SCOPE)
+
+list(APPEND FLUTTER_LIBRARY_HEADERS
+  "fl_basic_message_channel.h"
+  "fl_binary_codec.h"
+  "fl_binary_messenger.h"
+  "fl_dart_project.h"
+  "fl_engine.h"
+  "fl_json_message_codec.h"
+  "fl_json_method_codec.h"
+  "fl_message_codec.h"
+  "fl_method_call.h"
+  "fl_method_channel.h"
+  "fl_method_codec.h"
+  "fl_method_response.h"
+  "fl_plugin_registrar.h"
+  "fl_plugin_registry.h"
+  "fl_standard_message_codec.h"
+  "fl_standard_method_codec.h"
+  "fl_string_codec.h"
+  "fl_value.h"
+  "fl_view.h"
+  "flutter_linux.h"
+)
+list_prepend(FLUTTER_LIBRARY_HEADERS "${EPHEMERAL_DIR}/flutter_linux/")
+add_library(flutter INTERFACE)
+target_include_directories(flutter INTERFACE
+  "${EPHEMERAL_DIR}"
+)
+target_link_libraries(flutter INTERFACE "${FLUTTER_LIBRARY}")
+target_link_libraries(flutter INTERFACE
+  PkgConfig::GTK
+  PkgConfig::GLIB
+  PkgConfig::GIO
+)
+add_dependencies(flutter flutter_assemble)
+
+# === Flutter tool backend ===
+# _phony_ is a non-existent file to force this command to run every time,
+# since currently there's no way to get a full input/output list from the
+# flutter tool.
+add_custom_command(
+  OUTPUT ${FLUTTER_LIBRARY} ${FLUTTER_LIBRARY_HEADERS}
+    ${CMAKE_CURRENT_BINARY_DIR}/_phony_
+  COMMAND ${CMAKE_COMMAND} -E env
+    ${FLUTTER_TOOL_ENVIRONMENT}
+    "${FLUTTER_ROOT}/packages/flutter_tools/bin/tool_backend.sh"
+      ${FLUTTER_TARGET_PLATFORM} ${CMAKE_BUILD_TYPE}
+  VERBATIM
+)
+add_custom_target(flutter_assemble DEPENDS
+  "${FLUTTER_LIBRARY}"
+  ${FLUTTER_LIBRARY_HEADERS}
+)
diff --git a/intro_flutter_gpu/step_01/linux/flutter/generated_plugin_registrant.cc b/intro_flutter_gpu/step_01/linux/flutter/generated_plugin_registrant.cc
new file mode 100644
index 0000000000..e71a16d23d
--- /dev/null
+++ b/intro_flutter_gpu/step_01/linux/flutter/generated_plugin_registrant.cc
@@ -0,0 +1,11 @@
+//
+//  Generated file. Do not edit.
+//
+
+// clang-format off
+
+#include "generated_plugin_registrant.h"
+
+
+void fl_register_plugins(FlPluginRegistry* registry) {
+}
diff --git a/intro_flutter_gpu/step_01/linux/flutter/generated_plugin_registrant.h b/intro_flutter_gpu/step_01/linux/flutter/generated_plugin_registrant.h
new file mode 100644
index 0000000000..e0f0a47bc0
--- /dev/null
+++ b/intro_flutter_gpu/step_01/linux/flutter/generated_plugin_registrant.h
@@ -0,0 +1,15 @@
+//
+//  Generated file. Do not edit.
+//
+
+// clang-format off
+
+#ifndef GENERATED_PLUGIN_REGISTRANT_
+#define GENERATED_PLUGIN_REGISTRANT_
+
+#include <flutter_linux/flutter_linux.h>
+
+// Registers Flutter plugins.
+void fl_register_plugins(FlPluginRegistry* registry);
+
+#endif  // GENERATED_PLUGIN_REGISTRANT_
diff --git a/intro_flutter_gpu/step_01/linux/flutter/generated_plugins.cmake b/intro_flutter_gpu/step_01/linux/flutter/generated_plugins.cmake
new file mode 100644
index 0000000000..2e1de87a7e
--- /dev/null
+++ b/intro_flutter_gpu/step_01/linux/flutter/generated_plugins.cmake
@@ -0,0 +1,23 @@
+#
+# Generated file, do not edit.
+#
+
+list(APPEND FLUTTER_PLUGIN_LIST
+)
+
+list(APPEND FLUTTER_FFI_PLUGIN_LIST
+)
+
+set(PLUGIN_BUNDLED_LIBRARIES)
+
+foreach(plugin ${FLUTTER_PLUGIN_LIST})
+  add_subdirectory(flutter/ephemeral/.plugin_symlinks/${plugin}/linux plugins/${plugin})
+  target_link_libraries(${BINARY_NAME} PRIVATE ${plugin}_plugin)
+  list(APPEND PLUGIN_BUNDLED_LIBRARIES $<TARGET_FILE:${plugin}_plugin>)
+  list(APPEND PLUGIN_BUNDLED_LIBRARIES ${${plugin}_bundled_libraries})
+endforeach(plugin)
+
+foreach(ffi_plugin ${FLUTTER_FFI_PLUGIN_LIST})
+  add_subdirectory(flutter/ephemeral/.plugin_symlinks/${ffi_plugin}/linux plugins/${ffi_plugin})
+  list(APPEND PLUGIN_BUNDLED_LIBRARIES ${${ffi_plugin}_bundled_libraries})
+endforeach(ffi_plugin)
diff --git a/intro_flutter_gpu/step_01/linux/runner/CMakeLists.txt b/intro_flutter_gpu/step_01/linux/runner/CMakeLists.txt
new file mode 100644
index 0000000000..e97dabc702
--- /dev/null
+++ b/intro_flutter_gpu/step_01/linux/runner/CMakeLists.txt
@@ -0,0 +1,26 @@
+cmake_minimum_required(VERSION 3.13)
+project(runner LANGUAGES CXX)
+
+# Define the application target. To change its name, change BINARY_NAME in the
+# top-level CMakeLists.txt, not the value here, or `flutter run` will no longer
+# work.
+#
+# Any new source files that you add to the application should be added here.
+add_executable(${BINARY_NAME}
+  "main.cc"
+  "my_application.cc"
+  "${FLUTTER_MANAGED_DIR}/generated_plugin_registrant.cc"
+)
+
+# Apply the standard set of build settings. This can be removed for applications
+# that need different build settings.
+apply_standard_settings(${BINARY_NAME})
+
+# Add preprocessor definitions for the application ID.
+add_definitions(-DAPPLICATION_ID="${APPLICATION_ID}")
+
+# Add dependency libraries. Add any application-specific dependencies here.
+target_link_libraries(${BINARY_NAME} PRIVATE flutter)
+target_link_libraries(${BINARY_NAME} PRIVATE PkgConfig::GTK)
+
+target_include_directories(${BINARY_NAME} PRIVATE "${CMAKE_SOURCE_DIR}")
diff --git a/intro_flutter_gpu/step_01/linux/runner/main.cc b/intro_flutter_gpu/step_01/linux/runner/main.cc
new file mode 100644
index 0000000000..e7c5c54370
--- /dev/null
+++ b/intro_flutter_gpu/step_01/linux/runner/main.cc
@@ -0,0 +1,6 @@
+#include "my_application.h"
+
+int main(int argc, char** argv) {
+  g_autoptr(MyApplication) app = my_application_new();
+  return g_application_run(G_APPLICATION(app), argc, argv);
+}
diff --git a/intro_flutter_gpu/step_01/linux/runner/my_application.cc b/intro_flutter_gpu/step_01/linux/runner/my_application.cc
new file mode 100644
index 0000000000..6c04c01067
--- /dev/null
+++ b/intro_flutter_gpu/step_01/linux/runner/my_application.cc
@@ -0,0 +1,130 @@
+#include "my_application.h"
+
+#include <flutter_linux/flutter_linux.h>
+#ifdef GDK_WINDOWING_X11
+#include <gdk/gdkx.h>
+#endif
+
+#include "flutter/generated_plugin_registrant.h"
+
+struct _MyApplication {
+  GtkApplication parent_instance;
+  char** dart_entrypoint_arguments;
+};
+
+G_DEFINE_TYPE(MyApplication, my_application, GTK_TYPE_APPLICATION)
+
+// Implements GApplication::activate.
+static void my_application_activate(GApplication* application) {
+  MyApplication* self = MY_APPLICATION(application);
+  GtkWindow* window =
+      GTK_WINDOW(gtk_application_window_new(GTK_APPLICATION(application)));
+
+  // Use a header bar when running in GNOME as this is the common style used
+  // by applications and is the setup most users will be using (e.g. Ubuntu
+  // desktop).
+  // If running on X and not using GNOME then just use a traditional title bar
+  // in case the window manager does more exotic layout, e.g. tiling.
+  // If running on Wayland assume the header bar will work (may need changing
+  // if future cases occur).
+  gboolean use_header_bar = TRUE;
+#ifdef GDK_WINDOWING_X11
+  GdkScreen* screen = gtk_window_get_screen(window);
+  if (GDK_IS_X11_SCREEN(screen)) {
+    const gchar* wm_name = gdk_x11_screen_get_window_manager_name(screen);
+    if (g_strcmp0(wm_name, "GNOME Shell") != 0) {
+      use_header_bar = FALSE;
+    }
+  }
+#endif
+  if (use_header_bar) {
+    GtkHeaderBar* header_bar = GTK_HEADER_BAR(gtk_header_bar_new());
+    gtk_widget_show(GTK_WIDGET(header_bar));
+    gtk_header_bar_set_title(header_bar, "intro_flutter_gpu");
+    gtk_header_bar_set_show_close_button(header_bar, TRUE);
+    gtk_window_set_titlebar(window, GTK_WIDGET(header_bar));
+  } else {
+    gtk_window_set_title(window, "intro_flutter_gpu");
+  }
+
+  gtk_window_set_default_size(window, 1280, 720);
+  gtk_widget_show(GTK_WIDGET(window));
+
+  g_autoptr(FlDartProject) project = fl_dart_project_new();
+  fl_dart_project_set_dart_entrypoint_arguments(project, self->dart_entrypoint_arguments);
+
+  FlView* view = fl_view_new(project);
+  gtk_widget_show(GTK_WIDGET(view));
+  gtk_container_add(GTK_CONTAINER(window), GTK_WIDGET(view));
+
+  fl_register_plugins(FL_PLUGIN_REGISTRY(view));
+
+  gtk_widget_grab_focus(GTK_WIDGET(view));
+}
+
+// Implements GApplication::local_command_line.
+static gboolean my_application_local_command_line(GApplication* application, gchar*** arguments, int* exit_status) {
+  MyApplication* self = MY_APPLICATION(application);
+  // Strip out the first argument as it is the binary name.
+  self->dart_entrypoint_arguments = g_strdupv(*arguments + 1);
+
+  g_autoptr(GError) error = nullptr;
+  if (!g_application_register(application, nullptr, &error)) {
+     g_warning("Failed to register: %s", error->message);
+     *exit_status = 1;
+     return TRUE;
+  }
+
+  g_application_activate(application);
+  *exit_status = 0;
+
+  return TRUE;
+}
+
+// Implements GApplication::startup.
+static void my_application_startup(GApplication* application) {
+  //MyApplication* self = MY_APPLICATION(object);
+
+  // Perform any actions required at application startup.
+
+  G_APPLICATION_CLASS(my_application_parent_class)->startup(application);
+}
+
+// Implements GApplication::shutdown.
+static void my_application_shutdown(GApplication* application) {
+  //MyApplication* self = MY_APPLICATION(object);
+
+  // Perform any actions required at application shutdown.
+
+  G_APPLICATION_CLASS(my_application_parent_class)->shutdown(application);
+}
+
+// Implements GObject::dispose.
+static void my_application_dispose(GObject* object) {
+  MyApplication* self = MY_APPLICATION(object);
+  g_clear_pointer(&self->dart_entrypoint_arguments, g_strfreev);
+  G_OBJECT_CLASS(my_application_parent_class)->dispose(object);
+}
+
+static void my_application_class_init(MyApplicationClass* klass) {
+  G_APPLICATION_CLASS(klass)->activate = my_application_activate;
+  G_APPLICATION_CLASS(klass)->local_command_line = my_application_local_command_line;
+  G_APPLICATION_CLASS(klass)->startup = my_application_startup;
+  G_APPLICATION_CLASS(klass)->shutdown = my_application_shutdown;
+  G_OBJECT_CLASS(klass)->dispose = my_application_dispose;
+}
+
+static void my_application_init(MyApplication* self) {}
+
+MyApplication* my_application_new() {
+  // Set the program name to the application ID, which helps various systems
+  // like GTK and desktop environments map this running application to its
+  // corresponding .desktop file. This ensures better integration by allowing
+  // the application to be recognized beyond its binary name.
+  g_set_prgname(APPLICATION_ID);
+
+  return MY_APPLICATION(g_object_new(my_application_get_type(),
+                                     "application-id", APPLICATION_ID,
+                                     "flags", G_APPLICATION_NON_UNIQUE,
+                                     nullptr));
+}
diff --git a/intro_flutter_gpu/step_01/linux/runner/my_application.h b/intro_flutter_gpu/step_01/linux/runner/my_application.h
new file mode 100644
index 0000000000..72271d5e41
--- /dev/null
+++ b/intro_flutter_gpu/step_01/linux/runner/my_application.h
@@ -0,0 +1,18 @@
+#ifndef FLUTTER_MY_APPLICATION_H_
+#define FLUTTER_MY_APPLICATION_H_
+
+#include <gtk/gtk.h>
+
+G_DECLARE_FINAL_TYPE(MyApplication, my_application, MY, APPLICATION,
+                     GtkApplication)
+
+/**
+ * my_application_new:
+ *
+ * Creates a new Flutter-based application.
+ *
+ * Returns: a new #MyApplication.
+ */
+MyApplication* my_application_new();
+
+#endif  // FLUTTER_MY_APPLICATION_H_
diff --git a/intro_flutter_gpu/step_01/macos/Runner/Configs/AppInfo.xcconfig b/intro_flutter_gpu/step_01/macos/Runner/Configs/AppInfo.xcconfig
index 87348d3f8a..e4fb8e9e62 100644
--- a/intro_flutter_gpu/step_01/macos/Runner/Configs/AppInfo.xcconfig
+++ b/intro_flutter_gpu/step_01/macos/Runner/Configs/AppInfo.xcconfig
@@ -11,4 +11,4 @@ PRODUCT_NAME = intro_flutter_gpu
 PRODUCT_BUNDLE_IDENTIFIER = com.example.introFlutterGpu
 
 // The copyright displayed in application information
-PRODUCT_COPYRIGHT = Copyright © 2024 com.example. All rights reserved.
+PRODUCT_COPYRIGHT = Copyright © 2025 com.example. All rights reserved.
diff --git a/intro_flutter_gpu/step_01/windows/runner/Runner.rc b/intro_flutter_gpu/step_01/windows/runner/Runner.rc
index a76c0ec0fc..26e1dbe547 100644
--- a/intro_flutter_gpu/step_01/windows/runner/Runner.rc
+++ b/intro_flutter_gpu/step_01/windows/runner/Runner.rc
@@ -93,7 +93,7 @@ BEGIN
             VALUE "FileDescription", "intro_flutter_gpu" "\0"
             VALUE "FileVersion", VERSION_AS_STRING "\0"
             VALUE "InternalName", "intro_flutter_gpu" "\0"
-            VALUE "LegalCopyright", "Copyright (C) 2024 com.example. All rights reserved." "\0"
+            VALUE "LegalCopyright", "Copyright (C) 2025 com.example. All rights reserved." "\0"
             VALUE "OriginalFilename", "intro_flutter_gpu.exe" "\0"
             VALUE "ProductName", "intro_flutter_gpu" "\0"
             VALUE "ProductVersion", VERSION_AS_STRING "\0"
diff --git a/intro_flutter_gpu/step_02/android/.gitignore b/intro_flutter_gpu/step_02/android/.gitignore
index 55afd919c6..be3943c96d 100644
--- a/intro_flutter_gpu/step_02/android/.gitignore
+++ b/intro_flutter_gpu/step_02/android/.gitignore
@@ -5,6 +5,7 @@ gradle-wrapper.jar
 /gradlew.bat
 /local.properties
 GeneratedPluginRegistrant.java
+.cxx/
 
 # Remember to never publicly share your keystore.
 # See https://flutter.dev/to/reference-keystore
diff --git a/intro_flutter_gpu/step_02/android/app/build.gradle.kts b/intro_flutter_gpu/step_02/android/app/build.gradle.kts
index 857326fb7b..ba03f47e22 100644
--- a/intro_flutter_gpu/step_02/android/app/build.gradle.kts
+++ b/intro_flutter_gpu/step_02/android/app/build.gradle.kts
@@ -11,12 +11,12 @@ android {
     ndkVersion = flutter.ndkVersion
 
     compileOptions {
-        sourceCompatibility = JavaVersion.VERSION_1_8
-        targetCompatibility = JavaVersion.VERSION_1_8
+        sourceCompatibility = JavaVersion.VERSION_11
+        targetCompatibility = JavaVersion.VERSION_11
     }
 
     kotlinOptions {
-        jvmTarget = JavaVersion.VERSION_1_8.toString()
+        jvmTarget = JavaVersion.VERSION_11.toString()
     }
 
     defaultConfig {
diff --git a/intro_flutter_gpu/step_02/android/app/src/main/kotlin/com/example/intro_flutter_gpu/MainActivity.kt b/intro_flutter_gpu/step_02/android/app/src/main/kotlin/com/example/intro_flutter_gpu/MainActivity.kt
index 28c6a72dea..309b877fe4 100644
--- a/intro_flutter_gpu/step_02/android/app/src/main/kotlin/com/example/intro_flutter_gpu/MainActivity.kt
+++ b/intro_flutter_gpu/step_02/android/app/src/main/kotlin/com/example/intro_flutter_gpu/MainActivity.kt
@@ -2,4 +2,4 @@ package com.example.intro_flutter_gpu
 
 import io.flutter.embedding.android.FlutterActivity
 
-class MainActivity: FlutterActivity()
+class MainActivity : FlutterActivity()
diff --git a/intro_flutter_gpu/step_02/linux/.gitignore b/intro_flutter_gpu/step_02/linux/.gitignore
new file mode 100644
index 0000000000..d3896c9844
--- /dev/null
+++ b/intro_flutter_gpu/step_02/linux/.gitignore
@@ -0,0 +1 @@
+flutter/ephemeral
diff --git a/intro_flutter_gpu/step_02/linux/CMakeLists.txt b/intro_flutter_gpu/step_02/linux/CMakeLists.txt
new file mode 100644
index 0000000000..a487a7465e
--- /dev/null
+++ b/intro_flutter_gpu/step_02/linux/CMakeLists.txt
@@ -0,0 +1,128 @@
+# Project-level configuration.
+cmake_minimum_required(VERSION 3.13)
+project(runner LANGUAGES CXX)
+
+# The name of the executable created for the application. Change this to change
+# the on-disk name of your application.
+set(BINARY_NAME "intro_flutter_gpu")
+# The unique GTK application identifier for this application. See:
+# https://wiki.gnome.org/HowDoI/ChooseApplicationID
+set(APPLICATION_ID "com.example.intro_flutter_gpu")
+
+# Explicitly opt in to modern CMake behaviors to avoid warnings with recent
+# versions of CMake.
+cmake_policy(SET CMP0063 NEW)
+
+# Load bundled libraries from the lib/ directory relative to the binary.
+set(CMAKE_INSTALL_RPATH "$ORIGIN/lib")
+
+# Root filesystem for cross-building.
+if(FLUTTER_TARGET_PLATFORM_SYSROOT)
+  set(CMAKE_SYSROOT ${FLUTTER_TARGET_PLATFORM_SYSROOT})
+  set(CMAKE_FIND_ROOT_PATH ${CMAKE_SYSROOT})
+  set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+  set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
+  set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+  set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+endif()
+
+# Define build configuration options.
+if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
+  set(CMAKE_BUILD_TYPE "Debug" CACHE
+    STRING "Flutter build mode" FORCE)
+  set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS
+    "Debug" "Profile" "Release")
+endif()
+
+# Compilation settings that should be applied to most targets.
+#
+# Be cautious about adding new options here, as plugins use this function by
+# default. In most cases, you should add new options to specific targets instead
+# of modifying this function.
+function(APPLY_STANDARD_SETTINGS TARGET)
+  target_compile_features(${TARGET} PUBLIC cxx_std_14)
+  target_compile_options(${TARGET} PRIVATE -Wall -Werror)
+  target_compile_options(${TARGET} PRIVATE "$<$<NOT:$<CONFIG:Debug>>:-O3>")
+  target_compile_definitions(${TARGET} PRIVATE "$<$<NOT:$<CONFIG:Debug>>:NDEBUG>")
+endfunction()
+
+# Flutter library and tool build rules.
+set(FLUTTER_MANAGED_DIR "${CMAKE_CURRENT_SOURCE_DIR}/flutter")
+add_subdirectory(${FLUTTER_MANAGED_DIR})
+
+# System-level dependencies.
+find_package(PkgConfig REQUIRED)
+pkg_check_modules(GTK REQUIRED IMPORTED_TARGET gtk+-3.0)
+
+# Application build; see runner/CMakeLists.txt.
+add_subdirectory("runner")
+
+# Run the Flutter tool portions of the build. This must not be removed.
+add_dependencies(${BINARY_NAME} flutter_assemble)
+
+# Only the install-generated bundle's copy of the executable will launch
+# correctly, since the resources must in the right relative locations. To avoid
+# people trying to run the unbundled copy, put it in a subdirectory instead of
+# the default top-level location.
+set_target_properties(${BINARY_NAME}
+  PROPERTIES
+  RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/intermediates_do_not_run"
+)
+
+
+# Generated plugin build rules, which manage building the plugins and adding
+# them to the application.
+include(flutter/generated_plugins.cmake)
+
+
+# === Installation ===
+# By default, "installing" just makes a relocatable bundle in the build
+# directory.
+set(BUILD_BUNDLE_DIR "${PROJECT_BINARY_DIR}/bundle")
+if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
+  set(CMAKE_INSTALL_PREFIX "${BUILD_BUNDLE_DIR}" CACHE PATH "..." FORCE)
+endif()
+
+# Start with a clean build bundle directory every time.
+install(CODE "
+  file(REMOVE_RECURSE \"${BUILD_BUNDLE_DIR}/\")
+  " COMPONENT Runtime)
+
+set(INSTALL_BUNDLE_DATA_DIR "${CMAKE_INSTALL_PREFIX}/data")
+set(INSTALL_BUNDLE_LIB_DIR "${CMAKE_INSTALL_PREFIX}/lib")
+
+install(TARGETS ${BINARY_NAME} RUNTIME DESTINATION "${CMAKE_INSTALL_PREFIX}"
+  COMPONENT Runtime)
+
+install(FILES "${FLUTTER_ICU_DATA_FILE}" DESTINATION "${INSTALL_BUNDLE_DATA_DIR}"
+  COMPONENT Runtime)
+
+install(FILES "${FLUTTER_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+  COMPONENT Runtime)
+
+foreach(bundled_library ${PLUGIN_BUNDLED_LIBRARIES})
+  install(FILES "${bundled_library}"
+    DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+    COMPONENT Runtime)
+endforeach(bundled_library)
+
+# Copy the native assets provided by the build.dart from all packages.
+set(NATIVE_ASSETS_DIR "${PROJECT_BUILD_DIR}native_assets/linux/")
+install(DIRECTORY "${NATIVE_ASSETS_DIR}"
+   DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+   COMPONENT Runtime)
+
+# Fully re-copy the assets directory on each build to avoid having stale files
+# from a previous install.
+set(FLUTTER_ASSET_DIR_NAME "flutter_assets")
+install(CODE "
+  file(REMOVE_RECURSE \"${INSTALL_BUNDLE_DATA_DIR}/${FLUTTER_ASSET_DIR_NAME}\")
+  " COMPONENT Runtime)
+install(DIRECTORY "${PROJECT_BUILD_DIR}/${FLUTTER_ASSET_DIR_NAME}"
+  DESTINATION "${INSTALL_BUNDLE_DATA_DIR}" COMPONENT Runtime)
+
+# Install the AOT library on non-Debug builds only.
+if(NOT CMAKE_BUILD_TYPE MATCHES "Debug")
+  install(FILES "${AOT_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+    COMPONENT Runtime)
+endif()
diff --git a/intro_flutter_gpu/step_02/linux/flutter/CMakeLists.txt b/intro_flutter_gpu/step_02/linux/flutter/CMakeLists.txt
new file mode 100644
index 0000000000..d5bd01648a
--- /dev/null
+++ b/intro_flutter_gpu/step_02/linux/flutter/CMakeLists.txt
@@ -0,0 +1,88 @@
+# This file controls Flutter-level build steps. It should not be edited.
+cmake_minimum_required(VERSION 3.10)
+
+set(EPHEMERAL_DIR "${CMAKE_CURRENT_SOURCE_DIR}/ephemeral")
+
+# Configuration provided via flutter tool.
+include(${EPHEMERAL_DIR}/generated_config.cmake)
+
+# TODO: Move the rest of this into files in ephemeral. See
+# https://github.com/flutter/flutter/issues/57146.
+
+# Serves the same purpose as list(TRANSFORM ... PREPEND ...),
+# which isn't available in 3.10.
+function(list_prepend LIST_NAME PREFIX)
+    set(NEW_LIST "")
+    foreach(element ${${LIST_NAME}})
+        list(APPEND NEW_LIST "${PREFIX}${element}")
+    endforeach(element)
+    set(${LIST_NAME} "${NEW_LIST}" PARENT_SCOPE)
+endfunction()
+
+# === Flutter Library ===
+# System-level dependencies.
+find_package(PkgConfig REQUIRED)
+pkg_check_modules(GTK REQUIRED IMPORTED_TARGET gtk+-3.0)
+pkg_check_modules(GLIB REQUIRED IMPORTED_TARGET glib-2.0)
+pkg_check_modules(GIO REQUIRED IMPORTED_TARGET gio-2.0)
+
+set(FLUTTER_LIBRARY "${EPHEMERAL_DIR}/libflutter_linux_gtk.so")
+
+# Published to parent scope for install step.
+set(FLUTTER_LIBRARY ${FLUTTER_LIBRARY} PARENT_SCOPE)
+set(FLUTTER_ICU_DATA_FILE "${EPHEMERAL_DIR}/icudtl.dat" PARENT_SCOPE)
+set(PROJECT_BUILD_DIR "${PROJECT_DIR}/build/" PARENT_SCOPE)
+set(AOT_LIBRARY "${PROJECT_DIR}/build/lib/libapp.so" PARENT_SCOPE)
+
+list(APPEND FLUTTER_LIBRARY_HEADERS
+  "fl_basic_message_channel.h"
+  "fl_binary_codec.h"
+  "fl_binary_messenger.h"
+  "fl_dart_project.h"
+  "fl_engine.h"
+  "fl_json_message_codec.h"
+  "fl_json_method_codec.h"
+  "fl_message_codec.h"
+  "fl_method_call.h"
+  "fl_method_channel.h"
+  "fl_method_codec.h"
+  "fl_method_response.h"
+  "fl_plugin_registrar.h"
+  "fl_plugin_registry.h"
+  "fl_standard_message_codec.h"
+  "fl_standard_method_codec.h"
+  "fl_string_codec.h"
+  "fl_value.h"
+  "fl_view.h"
+  "flutter_linux.h"
+)
+list_prepend(FLUTTER_LIBRARY_HEADERS "${EPHEMERAL_DIR}/flutter_linux/")
+add_library(flutter INTERFACE)
+target_include_directories(flutter INTERFACE
+  "${EPHEMERAL_DIR}"
+)
+target_link_libraries(flutter INTERFACE "${FLUTTER_LIBRARY}")
+target_link_libraries(flutter INTERFACE
+  PkgConfig::GTK
+  PkgConfig::GLIB
+  PkgConfig::GIO
+)
+add_dependencies(flutter flutter_assemble)
+
+# === Flutter tool backend ===
+# _phony_ is a non-existent file to force this command to run every time,
+# since currently there's no way to get a full input/output list from the
+# flutter tool.
+add_custom_command(
+  OUTPUT ${FLUTTER_LIBRARY} ${FLUTTER_LIBRARY_HEADERS}
+    ${CMAKE_CURRENT_BINARY_DIR}/_phony_
+  COMMAND ${CMAKE_COMMAND} -E env
+    ${FLUTTER_TOOL_ENVIRONMENT}
+    "${FLUTTER_ROOT}/packages/flutter_tools/bin/tool_backend.sh"
+      ${FLUTTER_TARGET_PLATFORM} ${CMAKE_BUILD_TYPE}
+  VERBATIM
+)
+add_custom_target(flutter_assemble DEPENDS
+  "${FLUTTER_LIBRARY}"
+  ${FLUTTER_LIBRARY_HEADERS}
+)
diff --git a/intro_flutter_gpu/step_02/linux/flutter/generated_plugin_registrant.cc b/intro_flutter_gpu/step_02/linux/flutter/generated_plugin_registrant.cc
new file mode 100644
index 0000000000..e71a16d23d
--- /dev/null
+++ b/intro_flutter_gpu/step_02/linux/flutter/generated_plugin_registrant.cc
@@ -0,0 +1,11 @@
+//
+//  Generated file. Do not edit.
+//
+
+// clang-format off
+
+#include "generated_plugin_registrant.h"
+
+
+void fl_register_plugins(FlPluginRegistry* registry) {
+}
diff --git a/intro_flutter_gpu/step_02/linux/flutter/generated_plugin_registrant.h b/intro_flutter_gpu/step_02/linux/flutter/generated_plugin_registrant.h
new file mode 100644
index 0000000000..e0f0a47bc0
--- /dev/null
+++ b/intro_flutter_gpu/step_02/linux/flutter/generated_plugin_registrant.h
@@ -0,0 +1,15 @@
+//
+//  Generated file. Do not edit.
+//
+
+// clang-format off
+
+#ifndef GENERATED_PLUGIN_REGISTRANT_
+#define GENERATED_PLUGIN_REGISTRANT_
+
+#include <flutter_linux/flutter_linux.h>
+
+// Registers Flutter plugins.
+void fl_register_plugins(FlPluginRegistry* registry);
+
+#endif  // GENERATED_PLUGIN_REGISTRANT_
diff --git a/intro_flutter_gpu/step_02/linux/flutter/generated_plugins.cmake b/intro_flutter_gpu/step_02/linux/flutter/generated_plugins.cmake
new file mode 100644
index 0000000000..2e1de87a7e
--- /dev/null
+++ b/intro_flutter_gpu/step_02/linux/flutter/generated_plugins.cmake
@@ -0,0 +1,23 @@
+#
+# Generated file, do not edit.
+#
+
+list(APPEND FLUTTER_PLUGIN_LIST
+)
+
+list(APPEND FLUTTER_FFI_PLUGIN_LIST
+)
+
+set(PLUGIN_BUNDLED_LIBRARIES)
+
+foreach(plugin ${FLUTTER_PLUGIN_LIST})
+  add_subdirectory(flutter/ephemeral/.plugin_symlinks/${plugin}/linux plugins/${plugin})
+  target_link_libraries(${BINARY_NAME} PRIVATE ${plugin}_plugin)
+  list(APPEND PLUGIN_BUNDLED_LIBRARIES $<TARGET_FILE:${plugin}_plugin>)
+  list(APPEND PLUGIN_BUNDLED_LIBRARIES ${${plugin}_bundled_libraries})
+endforeach(plugin)
+
+foreach(ffi_plugin ${FLUTTER_FFI_PLUGIN_LIST})
+  add_subdirectory(flutter/ephemeral/.plugin_symlinks/${ffi_plugin}/linux plugins/${ffi_plugin})
+  list(APPEND PLUGIN_BUNDLED_LIBRARIES ${${ffi_plugin}_bundled_libraries})
+endforeach(ffi_plugin)
diff --git a/intro_flutter_gpu/step_02/linux/runner/CMakeLists.txt b/intro_flutter_gpu/step_02/linux/runner/CMakeLists.txt
new file mode 100644
index 0000000000..e97dabc702
--- /dev/null
+++ b/intro_flutter_gpu/step_02/linux/runner/CMakeLists.txt
@@ -0,0 +1,26 @@
+cmake_minimum_required(VERSION 3.13)
+project(runner LANGUAGES CXX)
+
+# Define the application target. To change its name, change BINARY_NAME in the
+# top-level CMakeLists.txt, not the value here, or `flutter run` will no longer
+# work.
+#
+# Any new source files that you add to the application should be added here.
+add_executable(${BINARY_NAME}
+  "main.cc"
+  "my_application.cc"
+  "${FLUTTER_MANAGED_DIR}/generated_plugin_registrant.cc"
+)
+
+# Apply the standard set of build settings. This can be removed for applications
+# that need different build settings.
+apply_standard_settings(${BINARY_NAME})
+
+# Add preprocessor definitions for the application ID.
+add_definitions(-DAPPLICATION_ID="${APPLICATION_ID}")
+
+# Add dependency libraries. Add any application-specific dependencies here.
+target_link_libraries(${BINARY_NAME} PRIVATE flutter)
+target_link_libraries(${BINARY_NAME} PRIVATE PkgConfig::GTK)
+
+target_include_directories(${BINARY_NAME} PRIVATE "${CMAKE_SOURCE_DIR}")
diff --git a/intro_flutter_gpu/step_02/linux/runner/main.cc b/intro_flutter_gpu/step_02/linux/runner/main.cc
new file mode 100644
index 0000000000..e7c5c54370
--- /dev/null
+++ b/intro_flutter_gpu/step_02/linux/runner/main.cc
@@ -0,0 +1,6 @@
+#include "my_application.h"
+
+int main(int argc, char** argv) {
+  g_autoptr(MyApplication) app = my_application_new();
+  return g_application_run(G_APPLICATION(app), argc, argv);
+}
diff --git a/intro_flutter_gpu/step_02/linux/runner/my_application.cc b/intro_flutter_gpu/step_02/linux/runner/my_application.cc
new file mode 100644
index 0000000000..6c04c01067
--- /dev/null
+++ b/intro_flutter_gpu/step_02/linux/runner/my_application.cc
@@ -0,0 +1,130 @@
+#include "my_application.h"
+
+#include <flutter_linux/flutter_linux.h>
+#ifdef GDK_WINDOWING_X11
+#include <gdk/gdkx.h>
+#endif
+
+#include "flutter/generated_plugin_registrant.h"
+
+struct _MyApplication {
+  GtkApplication parent_instance;
+  char** dart_entrypoint_arguments;
+};
+
+G_DEFINE_TYPE(MyApplication, my_application, GTK_TYPE_APPLICATION)
+
+// Implements GApplication::activate.
+static void my_application_activate(GApplication* application) {
+  MyApplication* self = MY_APPLICATION(application);
+  GtkWindow* window =
+      GTK_WINDOW(gtk_application_window_new(GTK_APPLICATION(application)));
+
+  // Use a header bar when running in GNOME as this is the common style used
+  // by applications and is the setup most users will be using (e.g. Ubuntu
+  // desktop).
+  // If running on X and not using GNOME then just use a traditional title bar
+  // in case the window manager does more exotic layout, e.g. tiling.
+  // If running on Wayland assume the header bar will work (may need changing
+  // if future cases occur).
+  gboolean use_header_bar = TRUE;
+#ifdef GDK_WINDOWING_X11
+  GdkScreen* screen = gtk_window_get_screen(window);
+  if (GDK_IS_X11_SCREEN(screen)) {
+    const gchar* wm_name = gdk_x11_screen_get_window_manager_name(screen);
+    if (g_strcmp0(wm_name, "GNOME Shell") != 0) {
+      use_header_bar = FALSE;
+    }
+  }
+#endif
+  if (use_header_bar) {
+    GtkHeaderBar* header_bar = GTK_HEADER_BAR(gtk_header_bar_new());
+    gtk_widget_show(GTK_WIDGET(header_bar));
+    gtk_header_bar_set_title(header_bar, "intro_flutter_gpu");
+    gtk_header_bar_set_show_close_button(header_bar, TRUE);
+    gtk_window_set_titlebar(window, GTK_WIDGET(header_bar));
+  } else {
+    gtk_window_set_title(window, "intro_flutter_gpu");
+  }
+
+  gtk_window_set_default_size(window, 1280, 720);
+  gtk_widget_show(GTK_WIDGET(window));
+
+  g_autoptr(FlDartProject) project = fl_dart_project_new();
+  fl_dart_project_set_dart_entrypoint_arguments(project, self->dart_entrypoint_arguments);
+
+  FlView* view = fl_view_new(project);
+  gtk_widget_show(GTK_WIDGET(view));
+  gtk_container_add(GTK_CONTAINER(window), GTK_WIDGET(view));
+
+  fl_register_plugins(FL_PLUGIN_REGISTRY(view));
+
+  gtk_widget_grab_focus(GTK_WIDGET(view));
+}
+
+// Implements GApplication::local_command_line.
+static gboolean my_application_local_command_line(GApplication* application, gchar*** arguments, int* exit_status) {
+  MyApplication* self = MY_APPLICATION(application);
+  // Strip out the first argument as it is the binary name.
+  self->dart_entrypoint_arguments = g_strdupv(*arguments + 1);
+
+  g_autoptr(GError) error = nullptr;
+  if (!g_application_register(application, nullptr, &error)) {
+     g_warning("Failed to register: %s", error->message);
+     *exit_status = 1;
+     return TRUE;
+  }
+
+  g_application_activate(application);
+  *exit_status = 0;
+
+  return TRUE;
+}
+
+// Implements GApplication::startup.
+static void my_application_startup(GApplication* application) {
+  //MyApplication* self = MY_APPLICATION(object);
+
+  // Perform any actions required at application startup.
+
+  G_APPLICATION_CLASS(my_application_parent_class)->startup(application);
+}
+
+// Implements GApplication::shutdown.
+static void my_application_shutdown(GApplication* application) {
+  //MyApplication* self = MY_APPLICATION(object);
+
+  // Perform any actions required at application shutdown.
+
+  G_APPLICATION_CLASS(my_application_parent_class)->shutdown(application);
+}
+
+// Implements GObject::dispose.
+static void my_application_dispose(GObject* object) {
+  MyApplication* self = MY_APPLICATION(object);
+  g_clear_pointer(&self->dart_entrypoint_arguments, g_strfreev);
+  G_OBJECT_CLASS(my_application_parent_class)->dispose(object);
+}
+
+static void my_application_class_init(MyApplicationClass* klass) {
+  G_APPLICATION_CLASS(klass)->activate = my_application_activate;
+  G_APPLICATION_CLASS(klass)->local_command_line = my_application_local_command_line;
+  G_APPLICATION_CLASS(klass)->startup = my_application_startup;
+  G_APPLICATION_CLASS(klass)->shutdown = my_application_shutdown;
+  G_OBJECT_CLASS(klass)->dispose = my_application_dispose;
+}
+
+static void my_application_init(MyApplication* self) {}
+
+MyApplication* my_application_new() {
+  // Set the program name to the application ID, which helps various systems
+  // like GTK and desktop environments map this running application to its
+  // corresponding .desktop file. This ensures better integration by allowing
+  // the application to be recognized beyond its binary name.
+  g_set_prgname(APPLICATION_ID);
+
+  return MY_APPLICATION(g_object_new(my_application_get_type(),
+                                     "application-id", APPLICATION_ID,
+                                     "flags", G_APPLICATION_NON_UNIQUE,
+                                     nullptr));
+}
diff --git a/intro_flutter_gpu/step_02/linux/runner/my_application.h b/intro_flutter_gpu/step_02/linux/runner/my_application.h
new file mode 100644
index 0000000000..72271d5e41
--- /dev/null
+++ b/intro_flutter_gpu/step_02/linux/runner/my_application.h
@@ -0,0 +1,18 @@
+#ifndef FLUTTER_MY_APPLICATION_H_
+#define FLUTTER_MY_APPLICATION_H_
+
+#include <gtk/gtk.h>
+
+G_DECLARE_FINAL_TYPE(MyApplication, my_application, MY, APPLICATION,
+                     GtkApplication)
+
+/**
+ * my_application_new:
+ *
+ * Creates a new Flutter-based application.
+ *
+ * Returns: a new #MyApplication.
+ */
+MyApplication* my_application_new();
+
+#endif  // FLUTTER_MY_APPLICATION_H_
diff --git a/intro_flutter_gpu/step_02/macos/Runner/Configs/AppInfo.xcconfig b/intro_flutter_gpu/step_02/macos/Runner/Configs/AppInfo.xcconfig
index 87348d3f8a..e4fb8e9e62 100644
--- a/intro_flutter_gpu/step_02/macos/Runner/Configs/AppInfo.xcconfig
+++ b/intro_flutter_gpu/step_02/macos/Runner/Configs/AppInfo.xcconfig
@@ -11,4 +11,4 @@ PRODUCT_NAME = intro_flutter_gpu
 PRODUCT_BUNDLE_IDENTIFIER = com.example.introFlutterGpu
 
 // The copyright displayed in application information
-PRODUCT_COPYRIGHT = Copyright © 2024 com.example. All rights reserved.
+PRODUCT_COPYRIGHT = Copyright © 2025 com.example. All rights reserved.
diff --git a/intro_flutter_gpu/step_02/windows/runner/Runner.rc b/intro_flutter_gpu/step_02/windows/runner/Runner.rc
index a76c0ec0fc..26e1dbe547 100644
--- a/intro_flutter_gpu/step_02/windows/runner/Runner.rc
+++ b/intro_flutter_gpu/step_02/windows/runner/Runner.rc
@@ -93,7 +93,7 @@ BEGIN
             VALUE "FileDescription", "intro_flutter_gpu" "\0"
             VALUE "FileVersion", VERSION_AS_STRING "\0"
             VALUE "InternalName", "intro_flutter_gpu" "\0"
-            VALUE "LegalCopyright", "Copyright (C) 2024 com.example. All rights reserved." "\0"
+            VALUE "LegalCopyright", "Copyright (C) 2025 com.example. All rights reserved." "\0"
             VALUE "OriginalFilename", "intro_flutter_gpu.exe" "\0"
             VALUE "ProductName", "intro_flutter_gpu" "\0"
             VALUE "ProductVersion", VERSION_AS_STRING "\0"
diff --git a/intro_flutter_gpu/step_03/android/.gitignore b/intro_flutter_gpu/step_03/android/.gitignore
index 55afd919c6..be3943c96d 100644
--- a/intro_flutter_gpu/step_03/android/.gitignore
+++ b/intro_flutter_gpu/step_03/android/.gitignore
@@ -5,6 +5,7 @@ gradle-wrapper.jar
 /gradlew.bat
 /local.properties
 GeneratedPluginRegistrant.java
+.cxx/
 
 # Remember to never publicly share your keystore.
 # See https://flutter.dev/to/reference-keystore
diff --git a/intro_flutter_gpu/step_03/android/app/build.gradle.kts b/intro_flutter_gpu/step_03/android/app/build.gradle.kts
index 857326fb7b..ba03f47e22 100644
--- a/intro_flutter_gpu/step_03/android/app/build.gradle.kts
+++ b/intro_flutter_gpu/step_03/android/app/build.gradle.kts
@@ -11,12 +11,12 @@ android {
     ndkVersion = flutter.ndkVersion
 
     compileOptions {
-        sourceCompatibility = JavaVersion.VERSION_1_8
-        targetCompatibility = JavaVersion.VERSION_1_8
+        sourceCompatibility = JavaVersion.VERSION_11
+        targetCompatibility = JavaVersion.VERSION_11
     }
 
     kotlinOptions {
-        jvmTarget = JavaVersion.VERSION_1_8.toString()
+        jvmTarget = JavaVersion.VERSION_11.toString()
     }
 
     defaultConfig {
diff --git a/intro_flutter_gpu/step_03/android/app/src/main/kotlin/com/example/intro_flutter_gpu/MainActivity.kt b/intro_flutter_gpu/step_03/android/app/src/main/kotlin/com/example/intro_flutter_gpu/MainActivity.kt
index 28c6a72dea..309b877fe4 100644
--- a/intro_flutter_gpu/step_03/android/app/src/main/kotlin/com/example/intro_flutter_gpu/MainActivity.kt
+++ b/intro_flutter_gpu/step_03/android/app/src/main/kotlin/com/example/intro_flutter_gpu/MainActivity.kt
@@ -2,4 +2,4 @@ package com.example.intro_flutter_gpu
 
 import io.flutter.embedding.android.FlutterActivity
 
-class MainActivity: FlutterActivity()
+class MainActivity : FlutterActivity()
diff --git a/intro_flutter_gpu/step_03/linux/.gitignore b/intro_flutter_gpu/step_03/linux/.gitignore
new file mode 100644
index 0000000000..d3896c9844
--- /dev/null
+++ b/intro_flutter_gpu/step_03/linux/.gitignore
@@ -0,0 +1 @@
+flutter/ephemeral
diff --git a/intro_flutter_gpu/step_03/linux/CMakeLists.txt b/intro_flutter_gpu/step_03/linux/CMakeLists.txt
new file mode 100644
index 0000000000..a487a7465e
--- /dev/null
+++ b/intro_flutter_gpu/step_03/linux/CMakeLists.txt
@@ -0,0 +1,128 @@
+# Project-level configuration.
+cmake_minimum_required(VERSION 3.13)
+project(runner LANGUAGES CXX)
+
+# The name of the executable created for the application. Change this to change
+# the on-disk name of your application.
+set(BINARY_NAME "intro_flutter_gpu")
+# The unique GTK application identifier for this application. See:
+# https://wiki.gnome.org/HowDoI/ChooseApplicationID
+set(APPLICATION_ID "com.example.intro_flutter_gpu")
+
+# Explicitly opt in to modern CMake behaviors to avoid warnings with recent
+# versions of CMake.
+cmake_policy(SET CMP0063 NEW)
+
+# Load bundled libraries from the lib/ directory relative to the binary.
+set(CMAKE_INSTALL_RPATH "$ORIGIN/lib")
+
+# Root filesystem for cross-building.
+if(FLUTTER_TARGET_PLATFORM_SYSROOT)
+  set(CMAKE_SYSROOT ${FLUTTER_TARGET_PLATFORM_SYSROOT})
+  set(CMAKE_FIND_ROOT_PATH ${CMAKE_SYSROOT})
+  set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+  set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
+  set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+  set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+endif()
+
+# Define build configuration options.
+if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
+  set(CMAKE_BUILD_TYPE "Debug" CACHE
+    STRING "Flutter build mode" FORCE)
+  set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS
+    "Debug" "Profile" "Release")
+endif()
+
+# Compilation settings that should be applied to most targets.
+#
+# Be cautious about adding new options here, as plugins use this function by
+# default. In most cases, you should add new options to specific targets instead
+# of modifying this function.
+function(APPLY_STANDARD_SETTINGS TARGET)
+  target_compile_features(${TARGET} PUBLIC cxx_std_14)
+  target_compile_options(${TARGET} PRIVATE -Wall -Werror)
+  target_compile_options(${TARGET} PRIVATE "$<$<NOT:$<CONFIG:Debug>>:-O3>")
+  target_compile_definitions(${TARGET} PRIVATE "$<$<NOT:$<CONFIG:Debug>>:NDEBUG>")
+endfunction()
+
+# Flutter library and tool build rules.
+set(FLUTTER_MANAGED_DIR "${CMAKE_CURRENT_SOURCE_DIR}/flutter")
+add_subdirectory(${FLUTTER_MANAGED_DIR})
+
+# System-level dependencies.
+find_package(PkgConfig REQUIRED)
+pkg_check_modules(GTK REQUIRED IMPORTED_TARGET gtk+-3.0)
+
+# Application build; see runner/CMakeLists.txt.
+add_subdirectory("runner")
+
+# Run the Flutter tool portions of the build. This must not be removed.
+add_dependencies(${BINARY_NAME} flutter_assemble)
+
+# Only the install-generated bundle's copy of the executable will launch
+# correctly, since the resources must in the right relative locations. To avoid
+# people trying to run the unbundled copy, put it in a subdirectory instead of
+# the default top-level location.
+set_target_properties(${BINARY_NAME}
+  PROPERTIES
+  RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/intermediates_do_not_run"
+)
+
+
+# Generated plugin build rules, which manage building the plugins and adding
+# them to the application.
+include(flutter/generated_plugins.cmake)
+
+
+# === Installation ===
+# By default, "installing" just makes a relocatable bundle in the build
+# directory.
+set(BUILD_BUNDLE_DIR "${PROJECT_BINARY_DIR}/bundle")
+if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
+  set(CMAKE_INSTALL_PREFIX "${BUILD_BUNDLE_DIR}" CACHE PATH "..." FORCE)
+endif()
+
+# Start with a clean build bundle directory every time.
+install(CODE "
+  file(REMOVE_RECURSE \"${BUILD_BUNDLE_DIR}/\")
+  " COMPONENT Runtime)
+
+set(INSTALL_BUNDLE_DATA_DIR "${CMAKE_INSTALL_PREFIX}/data")
+set(INSTALL_BUNDLE_LIB_DIR "${CMAKE_INSTALL_PREFIX}/lib")
+
+install(TARGETS ${BINARY_NAME} RUNTIME DESTINATION "${CMAKE_INSTALL_PREFIX}"
+  COMPONENT Runtime)
+
+install(FILES "${FLUTTER_ICU_DATA_FILE}" DESTINATION "${INSTALL_BUNDLE_DATA_DIR}"
+  COMPONENT Runtime)
+
+install(FILES "${FLUTTER_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+  COMPONENT Runtime)
+
+foreach(bundled_library ${PLUGIN_BUNDLED_LIBRARIES})
+  install(FILES "${bundled_library}"
+    DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+    COMPONENT Runtime)
+endforeach(bundled_library)
+
+# Copy the native assets provided by the build.dart from all packages.
+set(NATIVE_ASSETS_DIR "${PROJECT_BUILD_DIR}native_assets/linux/")
+install(DIRECTORY "${NATIVE_ASSETS_DIR}"
+   DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+   COMPONENT Runtime)
+
+# Fully re-copy the assets directory on each build to avoid having stale files
+# from a previous install.
+set(FLUTTER_ASSET_DIR_NAME "flutter_assets")
+install(CODE "
+  file(REMOVE_RECURSE \"${INSTALL_BUNDLE_DATA_DIR}/${FLUTTER_ASSET_DIR_NAME}\")
+  " COMPONENT Runtime)
+install(DIRECTORY "${PROJECT_BUILD_DIR}/${FLUTTER_ASSET_DIR_NAME}"
+  DESTINATION "${INSTALL_BUNDLE_DATA_DIR}" COMPONENT Runtime)
+
+# Install the AOT library on non-Debug builds only.
+if(NOT CMAKE_BUILD_TYPE MATCHES "Debug")
+  install(FILES "${AOT_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+    COMPONENT Runtime)
+endif()
diff --git a/intro_flutter_gpu/step_03/linux/flutter/CMakeLists.txt b/intro_flutter_gpu/step_03/linux/flutter/CMakeLists.txt
new file mode 100644
index 0000000000..d5bd01648a
--- /dev/null
+++ b/intro_flutter_gpu/step_03/linux/flutter/CMakeLists.txt
@@ -0,0 +1,88 @@
+# This file controls Flutter-level build steps. It should not be edited.
+cmake_minimum_required(VERSION 3.10)
+
+set(EPHEMERAL_DIR "${CMAKE_CURRENT_SOURCE_DIR}/ephemeral")
+
+# Configuration provided via flutter tool.
+include(${EPHEMERAL_DIR}/generated_config.cmake)
+
+# TODO: Move the rest of this into files in ephemeral. See
+# https://github.com/flutter/flutter/issues/57146.
+
+# Serves the same purpose as list(TRANSFORM ... PREPEND ...),
+# which isn't available in 3.10.
+function(list_prepend LIST_NAME PREFIX)
+    set(NEW_LIST "")
+    foreach(element ${${LIST_NAME}})
+        list(APPEND NEW_LIST "${PREFIX}${element}")
+    endforeach(element)
+    set(${LIST_NAME} "${NEW_LIST}" PARENT_SCOPE)
+endfunction()
+
+# === Flutter Library ===
+# System-level dependencies.
+find_package(PkgConfig REQUIRED)
+pkg_check_modules(GTK REQUIRED IMPORTED_TARGET gtk+-3.0)
+pkg_check_modules(GLIB REQUIRED IMPORTED_TARGET glib-2.0)
+pkg_check_modules(GIO REQUIRED IMPORTED_TARGET gio-2.0)
+
+set(FLUTTER_LIBRARY "${EPHEMERAL_DIR}/libflutter_linux_gtk.so")
+
+# Published to parent scope for install step.
+set(FLUTTER_LIBRARY ${FLUTTER_LIBRARY} PARENT_SCOPE)
+set(FLUTTER_ICU_DATA_FILE "${EPHEMERAL_DIR}/icudtl.dat" PARENT_SCOPE)
+set(PROJECT_BUILD_DIR "${PROJECT_DIR}/build/" PARENT_SCOPE)
+set(AOT_LIBRARY "${PROJECT_DIR}/build/lib/libapp.so" PARENT_SCOPE)
+
+list(APPEND FLUTTER_LIBRARY_HEADERS
+  "fl_basic_message_channel.h"
+  "fl_binary_codec.h"
+  "fl_binary_messenger.h"
+  "fl_dart_project.h"
+  "fl_engine.h"
+  "fl_json_message_codec.h"
+  "fl_json_method_codec.h"
+  "fl_message_codec.h"
+  "fl_method_call.h"
+  "fl_method_channel.h"
+  "fl_method_codec.h"
+  "fl_method_response.h"
+  "fl_plugin_registrar.h"
+  "fl_plugin_registry.h"
+  "fl_standard_message_codec.h"
+  "fl_standard_method_codec.h"
+  "fl_string_codec.h"
+  "fl_value.h"
+  "fl_view.h"
+  "flutter_linux.h"
+)
+list_prepend(FLUTTER_LIBRARY_HEADERS "${EPHEMERAL_DIR}/flutter_linux/")
+add_library(flutter INTERFACE)
+target_include_directories(flutter INTERFACE
+  "${EPHEMERAL_DIR}"
+)
+target_link_libraries(flutter INTERFACE "${FLUTTER_LIBRARY}")
+target_link_libraries(flutter INTERFACE
+  PkgConfig::GTK
+  PkgConfig::GLIB
+  PkgConfig::GIO
+)
+add_dependencies(flutter flutter_assemble)
+
+# === Flutter tool backend ===
+# _phony_ is a non-existent file to force this command to run every time,
+# since currently there's no way to get a full input/output list from the
+# flutter tool.
+add_custom_command(
+  OUTPUT ${FLUTTER_LIBRARY} ${FLUTTER_LIBRARY_HEADERS}
+    ${CMAKE_CURRENT_BINARY_DIR}/_phony_
+  COMMAND ${CMAKE_COMMAND} -E env
+    ${FLUTTER_TOOL_ENVIRONMENT}
+    "${FLUTTER_ROOT}/packages/flutter_tools/bin/tool_backend.sh"
+      ${FLUTTER_TARGET_PLATFORM} ${CMAKE_BUILD_TYPE}
+  VERBATIM
+)
+add_custom_target(flutter_assemble DEPENDS
+  "${FLUTTER_LIBRARY}"
+  ${FLUTTER_LIBRARY_HEADERS}
+)
diff --git a/intro_flutter_gpu/step_03/linux/flutter/generated_plugin_registrant.cc b/intro_flutter_gpu/step_03/linux/flutter/generated_plugin_registrant.cc
new file mode 100644
index 0000000000..e71a16d23d
--- /dev/null
+++ b/intro_flutter_gpu/step_03/linux/flutter/generated_plugin_registrant.cc
@@ -0,0 +1,11 @@
+//
+//  Generated file. Do not edit.
+//
+
+// clang-format off
+
+#include "generated_plugin_registrant.h"
+
+
+void fl_register_plugins(FlPluginRegistry* registry) {
+}
diff --git a/intro_flutter_gpu/step_03/linux/flutter/generated_plugin_registrant.h b/intro_flutter_gpu/step_03/linux/flutter/generated_plugin_registrant.h
new file mode 100644
index 0000000000..e0f0a47bc0
--- /dev/null
+++ b/intro_flutter_gpu/step_03/linux/flutter/generated_plugin_registrant.h
@@ -0,0 +1,15 @@
+//
+//  Generated file. Do not edit.
+//
+
+// clang-format off
+
+#ifndef GENERATED_PLUGIN_REGISTRANT_
+#define GENERATED_PLUGIN_REGISTRANT_
+
+#include <flutter_linux/flutter_linux.h>
+
+// Registers Flutter plugins.
+void fl_register_plugins(FlPluginRegistry* registry);
+
+#endif  // GENERATED_PLUGIN_REGISTRANT_
diff --git a/intro_flutter_gpu/step_03/linux/flutter/generated_plugins.cmake b/intro_flutter_gpu/step_03/linux/flutter/generated_plugins.cmake
new file mode 100644
index 0000000000..2e1de87a7e
--- /dev/null
+++ b/intro_flutter_gpu/step_03/linux/flutter/generated_plugins.cmake
@@ -0,0 +1,23 @@
+#
+# Generated file, do not edit.
+#
+
+list(APPEND FLUTTER_PLUGIN_LIST
+)
+
+list(APPEND FLUTTER_FFI_PLUGIN_LIST
+)
+
+set(PLUGIN_BUNDLED_LIBRARIES)
+
+foreach(plugin ${FLUTTER_PLUGIN_LIST})
+  add_subdirectory(flutter/ephemeral/.plugin_symlinks/${plugin}/linux plugins/${plugin})
+  target_link_libraries(${BINARY_NAME} PRIVATE ${plugin}_plugin)
+  list(APPEND PLUGIN_BUNDLED_LIBRARIES $<TARGET_FILE:${plugin}_plugin>)
+  list(APPEND PLUGIN_BUNDLED_LIBRARIES ${${plugin}_bundled_libraries})
+endforeach(plugin)
+
+foreach(ffi_plugin ${FLUTTER_FFI_PLUGIN_LIST})
+  add_subdirectory(flutter/ephemeral/.plugin_symlinks/${ffi_plugin}/linux plugins/${ffi_plugin})
+  list(APPEND PLUGIN_BUNDLED_LIBRARIES ${${ffi_plugin}_bundled_libraries})
+endforeach(ffi_plugin)
diff --git a/intro_flutter_gpu/step_03/linux/runner/CMakeLists.txt b/intro_flutter_gpu/step_03/linux/runner/CMakeLists.txt
new file mode 100644
index 0000000000..e97dabc702
--- /dev/null
+++ b/intro_flutter_gpu/step_03/linux/runner/CMakeLists.txt
@@ -0,0 +1,26 @@
+cmake_minimum_required(VERSION 3.13)
+project(runner LANGUAGES CXX)
+
+# Define the application target. To change its name, change BINARY_NAME in the
+# top-level CMakeLists.txt, not the value here, or `flutter run` will no longer
+# work.
+#
+# Any new source files that you add to the application should be added here.
+add_executable(${BINARY_NAME}
+  "main.cc"
+  "my_application.cc"
+  "${FLUTTER_MANAGED_DIR}/generated_plugin_registrant.cc"
+)
+
+# Apply the standard set of build settings. This can be removed for applications
+# that need different build settings.
+apply_standard_settings(${BINARY_NAME})
+
+# Add preprocessor definitions for the application ID.
+add_definitions(-DAPPLICATION_ID="${APPLICATION_ID}")
+
+# Add dependency libraries. Add any application-specific dependencies here.
+target_link_libraries(${BINARY_NAME} PRIVATE flutter)
+target_link_libraries(${BINARY_NAME} PRIVATE PkgConfig::GTK)
+
+target_include_directories(${BINARY_NAME} PRIVATE "${CMAKE_SOURCE_DIR}")
diff --git a/intro_flutter_gpu/step_03/linux/runner/main.cc b/intro_flutter_gpu/step_03/linux/runner/main.cc
new file mode 100644
index 0000000000..e7c5c54370
--- /dev/null
+++ b/intro_flutter_gpu/step_03/linux/runner/main.cc
@@ -0,0 +1,6 @@
+#include "my_application.h"
+
+int main(int argc, char** argv) {
+  g_autoptr(MyApplication) app = my_application_new();
+  return g_application_run(G_APPLICATION(app), argc, argv);
+}
diff --git a/intro_flutter_gpu/step_03/linux/runner/my_application.cc b/intro_flutter_gpu/step_03/linux/runner/my_application.cc
new file mode 100644
index 0000000000..6c04c01067
--- /dev/null
+++ b/intro_flutter_gpu/step_03/linux/runner/my_application.cc
@@ -0,0 +1,130 @@
+#include "my_application.h"
+
+#include <flutter_linux/flutter_linux.h>
+#ifdef GDK_WINDOWING_X11
+#include <gdk/gdkx.h>
+#endif
+
+#include "flutter/generated_plugin_registrant.h"
+
+struct _MyApplication {
+  GtkApplication parent_instance;
+  char** dart_entrypoint_arguments;
+};
+
+G_DEFINE_TYPE(MyApplication, my_application, GTK_TYPE_APPLICATION)
+
+// Implements GApplication::activate.
+static void my_application_activate(GApplication* application) {
+  MyApplication* self = MY_APPLICATION(application);
+  GtkWindow* window =
+      GTK_WINDOW(gtk_application_window_new(GTK_APPLICATION(application)));
+
+  // Use a header bar when running in GNOME as this is the common style used
+  // by applications and is the setup most users will be using (e.g. Ubuntu
+  // desktop).
+  // If running on X and not using GNOME then just use a traditional title bar
+  // in case the window manager does more exotic layout, e.g. tiling.
+  // If running on Wayland assume the header bar will work (may need changing
+  // if future cases occur).
+  gboolean use_header_bar = TRUE;
+#ifdef GDK_WINDOWING_X11
+  GdkScreen* screen = gtk_window_get_screen(window);
+  if (GDK_IS_X11_SCREEN(screen)) {
+    const gchar* wm_name = gdk_x11_screen_get_window_manager_name(screen);
+    if (g_strcmp0(wm_name, "GNOME Shell") != 0) {
+      use_header_bar = FALSE;
+    }
+  }
+#endif
+  if (use_header_bar) {
+    GtkHeaderBar* header_bar = GTK_HEADER_BAR(gtk_header_bar_new());
+    gtk_widget_show(GTK_WIDGET(header_bar));
+    gtk_header_bar_set_title(header_bar, "intro_flutter_gpu");
+    gtk_header_bar_set_show_close_button(header_bar, TRUE);
+    gtk_window_set_titlebar(window, GTK_WIDGET(header_bar));
+  } else {
+    gtk_window_set_title(window, "intro_flutter_gpu");
+  }
+
+  gtk_window_set_default_size(window, 1280, 720);
+  gtk_widget_show(GTK_WIDGET(window));
+
+  g_autoptr(FlDartProject) project = fl_dart_project_new();
+  fl_dart_project_set_dart_entrypoint_arguments(project, self->dart_entrypoint_arguments);
+
+  FlView* view = fl_view_new(project);
+  gtk_widget_show(GTK_WIDGET(view));
+  gtk_container_add(GTK_CONTAINER(window), GTK_WIDGET(view));
+
+  fl_register_plugins(FL_PLUGIN_REGISTRY(view));
+
+  gtk_widget_grab_focus(GTK_WIDGET(view));
+}
+
+// Implements GApplication::local_command_line.
+static gboolean my_application_local_command_line(GApplication* application, gchar*** arguments, int* exit_status) {
+  MyApplication* self = MY_APPLICATION(application);
+  // Strip out the first argument as it is the binary name.
+  self->dart_entrypoint_arguments = g_strdupv(*arguments + 1);
+
+  g_autoptr(GError) error = nullptr;
+  if (!g_application_register(application, nullptr, &error)) {
+     g_warning("Failed to register: %s", error->message);
+     *exit_status = 1;
+     return TRUE;
+  }
+
+  g_application_activate(application);
+  *exit_status = 0;
+
+  return TRUE;
+}
+
+// Implements GApplication::startup.
+static void my_application_startup(GApplication* application) {
+  //MyApplication* self = MY_APPLICATION(object);
+
+  // Perform any actions required at application startup.
+
+  G_APPLICATION_CLASS(my_application_parent_class)->startup(application);
+}
+
+// Implements GApplication::shutdown.
+static void my_application_shutdown(GApplication* application) {
+  //MyApplication* self = MY_APPLICATION(object);
+
+  // Perform any actions required at application shutdown.
+
+  G_APPLICATION_CLASS(my_application_parent_class)->shutdown(application);
+}
+
+// Implements GObject::dispose.
+static void my_application_dispose(GObject* object) {
+  MyApplication* self = MY_APPLICATION(object);
+  g_clear_pointer(&self->dart_entrypoint_arguments, g_strfreev);
+  G_OBJECT_CLASS(my_application_parent_class)->dispose(object);
+}
+
+static void my_application_class_init(MyApplicationClass* klass) {
+  G_APPLICATION_CLASS(klass)->activate = my_application_activate;
+  G_APPLICATION_CLASS(klass)->local_command_line = my_application_local_command_line;
+  G_APPLICATION_CLASS(klass)->startup = my_application_startup;
+  G_APPLICATION_CLASS(klass)->shutdown = my_application_shutdown;
+  G_OBJECT_CLASS(klass)->dispose = my_application_dispose;
+}
+
+static void my_application_init(MyApplication* self) {}
+
+MyApplication* my_application_new() {
+  // Set the program name to the application ID, which helps various systems
+  // like GTK and desktop environments map this running application to its
+  // corresponding .desktop file. This ensures better integration by allowing
+  // the application to be recognized beyond its binary name.
+  g_set_prgname(APPLICATION_ID);
+
+  return MY_APPLICATION(g_object_new(my_application_get_type(),
+                                     "application-id", APPLICATION_ID,
+                                     "flags", G_APPLICATION_NON_UNIQUE,
+                                     nullptr));
+}
diff --git a/intro_flutter_gpu/step_03/linux/runner/my_application.h b/intro_flutter_gpu/step_03/linux/runner/my_application.h
new file mode 100644
index 0000000000..72271d5e41
--- /dev/null
+++ b/intro_flutter_gpu/step_03/linux/runner/my_application.h
@@ -0,0 +1,18 @@
+#ifndef FLUTTER_MY_APPLICATION_H_
+#define FLUTTER_MY_APPLICATION_H_
+
+#include <gtk/gtk.h>
+
+G_DECLARE_FINAL_TYPE(MyApplication, my_application, MY, APPLICATION,
+                     GtkApplication)
+
+/**
+ * my_application_new:
+ *
+ * Creates a new Flutter-based application.
+ *
+ * Returns: a new #MyApplication.
+ */
+MyApplication* my_application_new();
+
+#endif  // FLUTTER_MY_APPLICATION_H_
diff --git a/intro_flutter_gpu/step_03/macos/Runner/Configs/AppInfo.xcconfig b/intro_flutter_gpu/step_03/macos/Runner/Configs/AppInfo.xcconfig
index 87348d3f8a..e4fb8e9e62 100644
--- a/intro_flutter_gpu/step_03/macos/Runner/Configs/AppInfo.xcconfig
+++ b/intro_flutter_gpu/step_03/macos/Runner/Configs/AppInfo.xcconfig
@@ -11,4 +11,4 @@ PRODUCT_NAME = intro_flutter_gpu
 PRODUCT_BUNDLE_IDENTIFIER = com.example.introFlutterGpu
 
 // The copyright displayed in application information
-PRODUCT_COPYRIGHT = Copyright © 2024 com.example. All rights reserved.
+PRODUCT_COPYRIGHT = Copyright © 2025 com.example. All rights reserved.
diff --git a/intro_flutter_gpu/step_03/windows/runner/Runner.rc b/intro_flutter_gpu/step_03/windows/runner/Runner.rc
index a76c0ec0fc..26e1dbe547 100644
--- a/intro_flutter_gpu/step_03/windows/runner/Runner.rc
+++ b/intro_flutter_gpu/step_03/windows/runner/Runner.rc
@@ -93,7 +93,7 @@ BEGIN
             VALUE "FileDescription", "intro_flutter_gpu" "\0"
             VALUE "FileVersion", VERSION_AS_STRING "\0"
             VALUE "InternalName", "intro_flutter_gpu" "\0"
-            VALUE "LegalCopyright", "Copyright (C) 2024 com.example. All rights reserved." "\0"
+            VALUE "LegalCopyright", "Copyright (C) 2025 com.example. All rights reserved." "\0"
             VALUE "OriginalFilename", "intro_flutter_gpu.exe" "\0"
             VALUE "ProductName", "intro_flutter_gpu" "\0"
             VALUE "ProductVersion", VERSION_AS_STRING "\0"
diff --git a/intro_flutter_gpu/step_04/android/.gitignore b/intro_flutter_gpu/step_04/android/.gitignore
index 55afd919c6..be3943c96d 100644
--- a/intro_flutter_gpu/step_04/android/.gitignore
+++ b/intro_flutter_gpu/step_04/android/.gitignore
@@ -5,6 +5,7 @@ gradle-wrapper.jar
 /gradlew.bat
 /local.properties
 GeneratedPluginRegistrant.java
+.cxx/
 
 # Remember to never publicly share your keystore.
 # See https://flutter.dev/to/reference-keystore
diff --git a/intro_flutter_gpu/step_04/android/app/build.gradle.kts b/intro_flutter_gpu/step_04/android/app/build.gradle.kts
index 857326fb7b..ba03f47e22 100644
--- a/intro_flutter_gpu/step_04/android/app/build.gradle.kts
+++ b/intro_flutter_gpu/step_04/android/app/build.gradle.kts
@@ -11,12 +11,12 @@ android {
     ndkVersion = flutter.ndkVersion
 
     compileOptions {
-        sourceCompatibility = JavaVersion.VERSION_1_8
-        targetCompatibility = JavaVersion.VERSION_1_8
+        sourceCompatibility = JavaVersion.VERSION_11
+        targetCompatibility = JavaVersion.VERSION_11
     }
 
     kotlinOptions {
-        jvmTarget = JavaVersion.VERSION_1_8.toString()
+        jvmTarget = JavaVersion.VERSION_11.toString()
     }
 
     defaultConfig {
diff --git a/intro_flutter_gpu/step_04/android/app/src/main/kotlin/com/example/intro_flutter_gpu/MainActivity.kt b/intro_flutter_gpu/step_04/android/app/src/main/kotlin/com/example/intro_flutter_gpu/MainActivity.kt
index 28c6a72dea..309b877fe4 100644
--- a/intro_flutter_gpu/step_04/android/app/src/main/kotlin/com/example/intro_flutter_gpu/MainActivity.kt
+++ b/intro_flutter_gpu/step_04/android/app/src/main/kotlin/com/example/intro_flutter_gpu/MainActivity.kt
@@ -2,4 +2,4 @@ package com.example.intro_flutter_gpu
 
 import io.flutter.embedding.android.FlutterActivity
 
-class MainActivity: FlutterActivity()
+class MainActivity : FlutterActivity()
diff --git a/intro_flutter_gpu/step_04/linux/.gitignore b/intro_flutter_gpu/step_04/linux/.gitignore
new file mode 100644
index 0000000000..d3896c9844
--- /dev/null
+++ b/intro_flutter_gpu/step_04/linux/.gitignore
@@ -0,0 +1 @@
+flutter/ephemeral
diff --git a/intro_flutter_gpu/step_04/linux/CMakeLists.txt b/intro_flutter_gpu/step_04/linux/CMakeLists.txt
new file mode 100644
index 0000000000..a487a7465e
--- /dev/null
+++ b/intro_flutter_gpu/step_04/linux/CMakeLists.txt
@@ -0,0 +1,128 @@
+# Project-level configuration.
+cmake_minimum_required(VERSION 3.13)
+project(runner LANGUAGES CXX)
+
+# The name of the executable created for the application. Change this to change
+# the on-disk name of your application.
+set(BINARY_NAME "intro_flutter_gpu")
+# The unique GTK application identifier for this application. See:
+# https://wiki.gnome.org/HowDoI/ChooseApplicationID
+set(APPLICATION_ID "com.example.intro_flutter_gpu")
+
+# Explicitly opt in to modern CMake behaviors to avoid warnings with recent
+# versions of CMake.
+cmake_policy(SET CMP0063 NEW)
+
+# Load bundled libraries from the lib/ directory relative to the binary.
+set(CMAKE_INSTALL_RPATH "$ORIGIN/lib")
+
+# Root filesystem for cross-building.
+if(FLUTTER_TARGET_PLATFORM_SYSROOT)
+  set(CMAKE_SYSROOT ${FLUTTER_TARGET_PLATFORM_SYSROOT})
+  set(CMAKE_FIND_ROOT_PATH ${CMAKE_SYSROOT})
+  set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+  set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
+  set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+  set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+endif()
+
+# Define build configuration options.
+if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
+  set(CMAKE_BUILD_TYPE "Debug" CACHE
+    STRING "Flutter build mode" FORCE)
+  set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS
+    "Debug" "Profile" "Release")
+endif()
+
+# Compilation settings that should be applied to most targets.
+#
+# Be cautious about adding new options here, as plugins use this function by
+# default. In most cases, you should add new options to specific targets instead
+# of modifying this function.
+function(APPLY_STANDARD_SETTINGS TARGET)
+  target_compile_features(${TARGET} PUBLIC cxx_std_14)
+  target_compile_options(${TARGET} PRIVATE -Wall -Werror)
+  target_compile_options(${TARGET} PRIVATE "$<$<NOT:$<CONFIG:Debug>>:-O3>")
+  target_compile_definitions(${TARGET} PRIVATE "$<$<NOT:$<CONFIG:Debug>>:NDEBUG>")
+endfunction()
+
+# Flutter library and tool build rules.
+set(FLUTTER_MANAGED_DIR "${CMAKE_CURRENT_SOURCE_DIR}/flutter")
+add_subdirectory(${FLUTTER_MANAGED_DIR})
+
+# System-level dependencies.
+find_package(PkgConfig REQUIRED)
+pkg_check_modules(GTK REQUIRED IMPORTED_TARGET gtk+-3.0)
+
+# Application build; see runner/CMakeLists.txt.
+add_subdirectory("runner")
+
+# Run the Flutter tool portions of the build. This must not be removed.
+add_dependencies(${BINARY_NAME} flutter_assemble)
+
+# Only the install-generated bundle's copy of the executable will launch
+# correctly, since the resources must in the right relative locations. To avoid
+# people trying to run the unbundled copy, put it in a subdirectory instead of
+# the default top-level location.
+set_target_properties(${BINARY_NAME}
+  PROPERTIES
+  RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/intermediates_do_not_run"
+)
+
+
+# Generated plugin build rules, which manage building the plugins and adding
+# them to the application.
+include(flutter/generated_plugins.cmake)
+
+
+# === Installation ===
+# By default, "installing" just makes a relocatable bundle in the build
+# directory.
+set(BUILD_BUNDLE_DIR "${PROJECT_BINARY_DIR}/bundle")
+if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
+  set(CMAKE_INSTALL_PREFIX "${BUILD_BUNDLE_DIR}" CACHE PATH "..." FORCE)
+endif()
+
+# Start with a clean build bundle directory every time.
+install(CODE "
+  file(REMOVE_RECURSE \"${BUILD_BUNDLE_DIR}/\")
+  " COMPONENT Runtime)
+
+set(INSTALL_BUNDLE_DATA_DIR "${CMAKE_INSTALL_PREFIX}/data")
+set(INSTALL_BUNDLE_LIB_DIR "${CMAKE_INSTALL_PREFIX}/lib")
+
+install(TARGETS ${BINARY_NAME} RUNTIME DESTINATION "${CMAKE_INSTALL_PREFIX}"
+  COMPONENT Runtime)
+
+install(FILES "${FLUTTER_ICU_DATA_FILE}" DESTINATION "${INSTALL_BUNDLE_DATA_DIR}"
+  COMPONENT Runtime)
+
+install(FILES "${FLUTTER_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+  COMPONENT Runtime)
+
+foreach(bundled_library ${PLUGIN_BUNDLED_LIBRARIES})
+  install(FILES "${bundled_library}"
+    DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+    COMPONENT Runtime)
+endforeach(bundled_library)
+
+# Copy the native assets provided by the build.dart from all packages.
+set(NATIVE_ASSETS_DIR "${PROJECT_BUILD_DIR}native_assets/linux/")
+install(DIRECTORY "${NATIVE_ASSETS_DIR}"
+   DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+   COMPONENT Runtime)
+
+# Fully re-copy the assets directory on each build to avoid having stale files
+# from a previous install.
+set(FLUTTER_ASSET_DIR_NAME "flutter_assets")
+install(CODE "
+  file(REMOVE_RECURSE \"${INSTALL_BUNDLE_DATA_DIR}/${FLUTTER_ASSET_DIR_NAME}\")
+  " COMPONENT Runtime)
+install(DIRECTORY "${PROJECT_BUILD_DIR}/${FLUTTER_ASSET_DIR_NAME}"
+  DESTINATION "${INSTALL_BUNDLE_DATA_DIR}" COMPONENT Runtime)
+
+# Install the AOT library on non-Debug builds only.
+if(NOT CMAKE_BUILD_TYPE MATCHES "Debug")
+  install(FILES "${AOT_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+    COMPONENT Runtime)
+endif()
diff --git a/intro_flutter_gpu/step_04/linux/flutter/CMakeLists.txt b/intro_flutter_gpu/step_04/linux/flutter/CMakeLists.txt
new file mode 100644
index 0000000000..d5bd01648a
--- /dev/null
+++ b/intro_flutter_gpu/step_04/linux/flutter/CMakeLists.txt
@@ -0,0 +1,88 @@
+# This file controls Flutter-level build steps. It should not be edited.
+cmake_minimum_required(VERSION 3.10)
+
+set(EPHEMERAL_DIR "${CMAKE_CURRENT_SOURCE_DIR}/ephemeral")
+
+# Configuration provided via flutter tool.
+include(${EPHEMERAL_DIR}/generated_config.cmake)
+
+# TODO: Move the rest of this into files in ephemeral. See
+# https://github.com/flutter/flutter/issues/57146.
+
+# Serves the same purpose as list(TRANSFORM ... PREPEND ...),
+# which isn't available in 3.10.
+function(list_prepend LIST_NAME PREFIX)
+    set(NEW_LIST "")
+    foreach(element ${${LIST_NAME}})
+        list(APPEND NEW_LIST "${PREFIX}${element}")
+    endforeach(element)
+    set(${LIST_NAME} "${NEW_LIST}" PARENT_SCOPE)
+endfunction()
+
+# === Flutter Library ===
+# System-level dependencies.
+find_package(PkgConfig REQUIRED)
+pkg_check_modules(GTK REQUIRED IMPORTED_TARGET gtk+-3.0)
+pkg_check_modules(GLIB REQUIRED IMPORTED_TARGET glib-2.0)
+pkg_check_modules(GIO REQUIRED IMPORTED_TARGET gio-2.0)
+
+set(FLUTTER_LIBRARY "${EPHEMERAL_DIR}/libflutter_linux_gtk.so")
+
+# Published to parent scope for install step.
+set(FLUTTER_LIBRARY ${FLUTTER_LIBRARY} PARENT_SCOPE)
+set(FLUTTER_ICU_DATA_FILE "${EPHEMERAL_DIR}/icudtl.dat" PARENT_SCOPE)
+set(PROJECT_BUILD_DIR "${PROJECT_DIR}/build/" PARENT_SCOPE)
+set(AOT_LIBRARY "${PROJECT_DIR}/build/lib/libapp.so" PARENT_SCOPE)
+
+list(APPEND FLUTTER_LIBRARY_HEADERS
+  "fl_basic_message_channel.h"
+  "fl_binary_codec.h"
+  "fl_binary_messenger.h"
+  "fl_dart_project.h"
+  "fl_engine.h"
+  "fl_json_message_codec.h"
+  "fl_json_method_codec.h"
+  "fl_message_codec.h"
+  "fl_method_call.h"
+  "fl_method_channel.h"
+  "fl_method_codec.h"
+  "fl_method_response.h"
+  "fl_plugin_registrar.h"
+  "fl_plugin_registry.h"
+  "fl_standard_message_codec.h"
+  "fl_standard_method_codec.h"
+  "fl_string_codec.h"
+  "fl_value.h"
+  "fl_view.h"
+  "flutter_linux.h"
+)
+list_prepend(FLUTTER_LIBRARY_HEADERS "${EPHEMERAL_DIR}/flutter_linux/")
+add_library(flutter INTERFACE)
+target_include_directories(flutter INTERFACE
+  "${EPHEMERAL_DIR}"
+)
+target_link_libraries(flutter INTERFACE "${FLUTTER_LIBRARY}")
+target_link_libraries(flutter INTERFACE
+  PkgConfig::GTK
+  PkgConfig::GLIB
+  PkgConfig::GIO
+)
+add_dependencies(flutter flutter_assemble)
+
+# === Flutter tool backend ===
+# _phony_ is a non-existent file to force this command to run every time,
+# since currently there's no way to get a full input/output list from the
+# flutter tool.
+add_custom_command(
+  OUTPUT ${FLUTTER_LIBRARY} ${FLUTTER_LIBRARY_HEADERS}
+    ${CMAKE_CURRENT_BINARY_DIR}/_phony_
+  COMMAND ${CMAKE_COMMAND} -E env
+    ${FLUTTER_TOOL_ENVIRONMENT}
+    "${FLUTTER_ROOT}/packages/flutter_tools/bin/tool_backend.sh"
+      ${FLUTTER_TARGET_PLATFORM} ${CMAKE_BUILD_TYPE}
+  VERBATIM
+)
+add_custom_target(flutter_assemble DEPENDS
+  "${FLUTTER_LIBRARY}"
+  ${FLUTTER_LIBRARY_HEADERS}
+)
diff --git a/intro_flutter_gpu/step_04/linux/flutter/generated_plugin_registrant.cc b/intro_flutter_gpu/step_04/linux/flutter/generated_plugin_registrant.cc
new file mode 100644
index 0000000000..e71a16d23d
--- /dev/null
+++ b/intro_flutter_gpu/step_04/linux/flutter/generated_plugin_registrant.cc
@@ -0,0 +1,11 @@
+//
+//  Generated file. Do not edit.
+//
+
+// clang-format off
+
+#include "generated_plugin_registrant.h"
+
+
+void fl_register_plugins(FlPluginRegistry* registry) {
+}
diff --git a/intro_flutter_gpu/step_04/linux/flutter/generated_plugin_registrant.h b/intro_flutter_gpu/step_04/linux/flutter/generated_plugin_registrant.h
new file mode 100644
index 0000000000..e0f0a47bc0
--- /dev/null
+++ b/intro_flutter_gpu/step_04/linux/flutter/generated_plugin_registrant.h
@@ -0,0 +1,15 @@
+//
+//  Generated file. Do not edit.
+//
+
+// clang-format off
+
+#ifndef GENERATED_PLUGIN_REGISTRANT_
+#define GENERATED_PLUGIN_REGISTRANT_
+
+#include <flutter_linux/flutter_linux.h>
+
+// Registers Flutter plugins.
+void fl_register_plugins(FlPluginRegistry* registry);
+
+#endif  // GENERATED_PLUGIN_REGISTRANT_
diff --git a/intro_flutter_gpu/step_04/linux/flutter/generated_plugins.cmake b/intro_flutter_gpu/step_04/linux/flutter/generated_plugins.cmake
new file mode 100644
index 0000000000..2e1de87a7e
--- /dev/null
+++ b/intro_flutter_gpu/step_04/linux/flutter/generated_plugins.cmake
@@ -0,0 +1,23 @@
+#
+# Generated file, do not edit.
+#
+
+list(APPEND FLUTTER_PLUGIN_LIST
+)
+
+list(APPEND FLUTTER_FFI_PLUGIN_LIST
+)
+
+set(PLUGIN_BUNDLED_LIBRARIES)
+
+foreach(plugin ${FLUTTER_PLUGIN_LIST})
+  add_subdirectory(flutter/ephemeral/.plugin_symlinks/${plugin}/linux plugins/${plugin})
+  target_link_libraries(${BINARY_NAME} PRIVATE ${plugin}_plugin)
+  list(APPEND PLUGIN_BUNDLED_LIBRARIES $<TARGET_FILE:${plugin}_plugin>)
+  list(APPEND PLUGIN_BUNDLED_LIBRARIES ${${plugin}_bundled_libraries})
+endforeach(plugin)
+
+foreach(ffi_plugin ${FLUTTER_FFI_PLUGIN_LIST})
+  add_subdirectory(flutter/ephemeral/.plugin_symlinks/${ffi_plugin}/linux plugins/${ffi_plugin})
+  list(APPEND PLUGIN_BUNDLED_LIBRARIES ${${ffi_plugin}_bundled_libraries})
+endforeach(ffi_plugin)
diff --git a/intro_flutter_gpu/step_04/linux/runner/CMakeLists.txt b/intro_flutter_gpu/step_04/linux/runner/CMakeLists.txt
new file mode 100644
index 0000000000..e97dabc702
--- /dev/null
+++ b/intro_flutter_gpu/step_04/linux/runner/CMakeLists.txt
@@ -0,0 +1,26 @@
+cmake_minimum_required(VERSION 3.13)
+project(runner LANGUAGES CXX)
+
+# Define the application target. To change its name, change BINARY_NAME in the
+# top-level CMakeLists.txt, not the value here, or `flutter run` will no longer
+# work.
+#
+# Any new source files that you add to the application should be added here.
+add_executable(${BINARY_NAME}
+  "main.cc"
+  "my_application.cc"
+  "${FLUTTER_MANAGED_DIR}/generated_plugin_registrant.cc"
+)
+
+# Apply the standard set of build settings. This can be removed for applications
+# that need different build settings.
+apply_standard_settings(${BINARY_NAME})
+
+# Add preprocessor definitions for the application ID.
+add_definitions(-DAPPLICATION_ID="${APPLICATION_ID}")
+
+# Add dependency libraries. Add any application-specific dependencies here.
+target_link_libraries(${BINARY_NAME} PRIVATE flutter)
+target_link_libraries(${BINARY_NAME} PRIVATE PkgConfig::GTK)
+
+target_include_directories(${BINARY_NAME} PRIVATE "${CMAKE_SOURCE_DIR}")
diff --git a/intro_flutter_gpu/step_04/linux/runner/main.cc b/intro_flutter_gpu/step_04/linux/runner/main.cc
new file mode 100644
index 0000000000..e7c5c54370
--- /dev/null
+++ b/intro_flutter_gpu/step_04/linux/runner/main.cc
@@ -0,0 +1,6 @@
+#include "my_application.h"
+
+int main(int argc, char** argv) {
+  g_autoptr(MyApplication) app = my_application_new();
+  return g_application_run(G_APPLICATION(app), argc, argv);
+}
diff --git a/intro_flutter_gpu/step_04/linux/runner/my_application.cc b/intro_flutter_gpu/step_04/linux/runner/my_application.cc
new file mode 100644
index 0000000000..6c04c01067
--- /dev/null
+++ b/intro_flutter_gpu/step_04/linux/runner/my_application.cc
@@ -0,0 +1,130 @@
+#include "my_application.h"
+
+#include <flutter_linux/flutter_linux.h>
+#ifdef GDK_WINDOWING_X11
+#include <gdk/gdkx.h>
+#endif
+
+#include "flutter/generated_plugin_registrant.h"
+
+struct _MyApplication {
+  GtkApplication parent_instance;
+  char** dart_entrypoint_arguments;
+};
+
+G_DEFINE_TYPE(MyApplication, my_application, GTK_TYPE_APPLICATION)
+
+// Implements GApplication::activate.
+static void my_application_activate(GApplication* application) {
+  MyApplication* self = MY_APPLICATION(application);
+  GtkWindow* window =
+      GTK_WINDOW(gtk_application_window_new(GTK_APPLICATION(application)));
+
+  // Use a header bar when running in GNOME as this is the common style used
+  // by applications and is the setup most users will be using (e.g. Ubuntu
+  // desktop).
+  // If running on X and not using GNOME then just use a traditional title bar
+  // in case the window manager does more exotic layout, e.g. tiling.
+  // If running on Wayland assume the header bar will work (may need changing
+  // if future cases occur).
+  gboolean use_header_bar = TRUE;
+#ifdef GDK_WINDOWING_X11
+  GdkScreen* screen = gtk_window_get_screen(window);
+  if (GDK_IS_X11_SCREEN(screen)) {
+    const gchar* wm_name = gdk_x11_screen_get_window_manager_name(screen);
+    if (g_strcmp0(wm_name, "GNOME Shell") != 0) {
+      use_header_bar = FALSE;
+    }
+  }
+#endif
+  if (use_header_bar) {
+    GtkHeaderBar* header_bar = GTK_HEADER_BAR(gtk_header_bar_new());
+    gtk_widget_show(GTK_WIDGET(header_bar));
+    gtk_header_bar_set_title(header_bar, "intro_flutter_gpu");
+    gtk_header_bar_set_show_close_button(header_bar, TRUE);
+    gtk_window_set_titlebar(window, GTK_WIDGET(header_bar));
+  } else {
+    gtk_window_set_title(window, "intro_flutter_gpu");
+  }
+
+  gtk_window_set_default_size(window, 1280, 720);
+  gtk_widget_show(GTK_WIDGET(window));
+
+  g_autoptr(FlDartProject) project = fl_dart_project_new();
+  fl_dart_project_set_dart_entrypoint_arguments(project, self->dart_entrypoint_arguments);
+
+  FlView* view = fl_view_new(project);
+  gtk_widget_show(GTK_WIDGET(view));
+  gtk_container_add(GTK_CONTAINER(window), GTK_WIDGET(view));
+
+  fl_register_plugins(FL_PLUGIN_REGISTRY(view));
+
+  gtk_widget_grab_focus(GTK_WIDGET(view));
+}
+
+// Implements GApplication::local_command_line.
+static gboolean my_application_local_command_line(GApplication* application, gchar*** arguments, int* exit_status) {
+  MyApplication* self = MY_APPLICATION(application);
+  // Strip out the first argument as it is the binary name.
+  self->dart_entrypoint_arguments = g_strdupv(*arguments + 1);
+
+  g_autoptr(GError) error = nullptr;
+  if (!g_application_register(application, nullptr, &error)) {
+     g_warning("Failed to register: %s", error->message);
+     *exit_status = 1;
+     return TRUE;
+  }
+
+  g_application_activate(application);
+  *exit_status = 0;
+
+  return TRUE;
+}
+
+// Implements GApplication::startup.
+static void my_application_startup(GApplication* application) {
+  //MyApplication* self = MY_APPLICATION(object);
+
+  // Perform any actions required at application startup.
+
+  G_APPLICATION_CLASS(my_application_parent_class)->startup(application);
+}
+
+// Implements GApplication::shutdown.
+static void my_application_shutdown(GApplication* application) {
+  //MyApplication* self = MY_APPLICATION(object);
+
+  // Perform any actions required at application shutdown.
+
+  G_APPLICATION_CLASS(my_application_parent_class)->shutdown(application);
+}
+
+// Implements GObject::dispose.
+static void my_application_dispose(GObject* object) {
+  MyApplication* self = MY_APPLICATION(object);
+  g_clear_pointer(&self->dart_entrypoint_arguments, g_strfreev);
+  G_OBJECT_CLASS(my_application_parent_class)->dispose(object);
+}
+
+static void my_application_class_init(MyApplicationClass* klass) {
+  G_APPLICATION_CLASS(klass)->activate = my_application_activate;
+  G_APPLICATION_CLASS(klass)->local_command_line = my_application_local_command_line;
+  G_APPLICATION_CLASS(klass)->startup = my_application_startup;
+  G_APPLICATION_CLASS(klass)->shutdown = my_application_shutdown;
+  G_OBJECT_CLASS(klass)->dispose = my_application_dispose;
+}
+
+static void my_application_init(MyApplication* self) {}
+
+MyApplication* my_application_new() {
+  // Set the program name to the application ID, which helps various systems
+  // like GTK and desktop environments map this running application to its
+  // corresponding .desktop file. This ensures better integration by allowing
+  // the application to be recognized beyond its binary name.
+  g_set_prgname(APPLICATION_ID);
+
+  return MY_APPLICATION(g_object_new(my_application_get_type(),
+                                     "application-id", APPLICATION_ID,
+                                     "flags", G_APPLICATION_NON_UNIQUE,
+                                     nullptr));
+}
diff --git a/intro_flutter_gpu/step_04/linux/runner/my_application.h b/intro_flutter_gpu/step_04/linux/runner/my_application.h
new file mode 100644
index 0000000000..72271d5e41
--- /dev/null
+++ b/intro_flutter_gpu/step_04/linux/runner/my_application.h
@@ -0,0 +1,18 @@
+#ifndef FLUTTER_MY_APPLICATION_H_
+#define FLUTTER_MY_APPLICATION_H_
+
+#include <gtk/gtk.h>
+
+G_DECLARE_FINAL_TYPE(MyApplication, my_application, MY, APPLICATION,
+                     GtkApplication)
+
+/**
+ * my_application_new:
+ *
+ * Creates a new Flutter-based application.
+ *
+ * Returns: a new #MyApplication.
+ */
+MyApplication* my_application_new();
+
+#endif  // FLUTTER_MY_APPLICATION_H_
diff --git a/intro_flutter_gpu/step_04/macos/Runner/Configs/AppInfo.xcconfig b/intro_flutter_gpu/step_04/macos/Runner/Configs/AppInfo.xcconfig
index 87348d3f8a..e4fb8e9e62 100644
--- a/intro_flutter_gpu/step_04/macos/Runner/Configs/AppInfo.xcconfig
+++ b/intro_flutter_gpu/step_04/macos/Runner/Configs/AppInfo.xcconfig
@@ -11,4 +11,4 @@ PRODUCT_NAME = intro_flutter_gpu
 PRODUCT_BUNDLE_IDENTIFIER = com.example.introFlutterGpu
 
 // The copyright displayed in application information
-PRODUCT_COPYRIGHT = Copyright © 2024 com.example. All rights reserved.
+PRODUCT_COPYRIGHT = Copyright © 2025 com.example. All rights reserved.
diff --git a/intro_flutter_gpu/step_04/windows/runner/Runner.rc b/intro_flutter_gpu/step_04/windows/runner/Runner.rc
index a76c0ec0fc..26e1dbe547 100644
--- a/intro_flutter_gpu/step_04/windows/runner/Runner.rc
+++ b/intro_flutter_gpu/step_04/windows/runner/Runner.rc
@@ -93,7 +93,7 @@ BEGIN
             VALUE "FileDescription", "intro_flutter_gpu" "\0"
             VALUE "FileVersion", VERSION_AS_STRING "\0"
             VALUE "InternalName", "intro_flutter_gpu" "\0"
-            VALUE "LegalCopyright", "Copyright (C) 2024 com.example. All rights reserved." "\0"
+            VALUE "LegalCopyright", "Copyright (C) 2025 com.example. All rights reserved." "\0"
             VALUE "OriginalFilename", "intro_flutter_gpu.exe" "\0"
             VALUE "ProductName", "intro_flutter_gpu" "\0"
             VALUE "ProductVersion", VERSION_AS_STRING "\0"
diff --git a/intro_flutter_gpu/step_05/android/.gitignore b/intro_flutter_gpu/step_05/android/.gitignore
index 55afd919c6..be3943c96d 100644
--- a/intro_flutter_gpu/step_05/android/.gitignore
+++ b/intro_flutter_gpu/step_05/android/.gitignore
@@ -5,6 +5,7 @@ gradle-wrapper.jar
 /gradlew.bat
 /local.properties
 GeneratedPluginRegistrant.java
+.cxx/
 
 # Remember to never publicly share your keystore.
 # See https://flutter.dev/to/reference-keystore
diff --git a/intro_flutter_gpu/step_05/android/app/build.gradle.kts b/intro_flutter_gpu/step_05/android/app/build.gradle.kts
index 857326fb7b..ba03f47e22 100644
--- a/intro_flutter_gpu/step_05/android/app/build.gradle.kts
+++ b/intro_flutter_gpu/step_05/android/app/build.gradle.kts
@@ -11,12 +11,12 @@ android {
     ndkVersion = flutter.ndkVersion
 
     compileOptions {
-        sourceCompatibility = JavaVersion.VERSION_1_8
-        targetCompatibility = JavaVersion.VERSION_1_8
+        sourceCompatibility = JavaVersion.VERSION_11
+        targetCompatibility = JavaVersion.VERSION_11
     }
 
     kotlinOptions {
-        jvmTarget = JavaVersion.VERSION_1_8.toString()
+        jvmTarget = JavaVersion.VERSION_11.toString()
     }
 
     defaultConfig {
diff --git a/intro_flutter_gpu/step_05/android/app/src/main/kotlin/com/example/intro_flutter_gpu/MainActivity.kt b/intro_flutter_gpu/step_05/android/app/src/main/kotlin/com/example/intro_flutter_gpu/MainActivity.kt
index 28c6a72dea..309b877fe4 100644
--- a/intro_flutter_gpu/step_05/android/app/src/main/kotlin/com/example/intro_flutter_gpu/MainActivity.kt
+++ b/intro_flutter_gpu/step_05/android/app/src/main/kotlin/com/example/intro_flutter_gpu/MainActivity.kt
@@ -2,4 +2,4 @@ package com.example.intro_flutter_gpu
 
 import io.flutter.embedding.android.FlutterActivity
 
-class MainActivity: FlutterActivity()
+class MainActivity : FlutterActivity()
diff --git a/intro_flutter_gpu/step_05/linux/.gitignore b/intro_flutter_gpu/step_05/linux/.gitignore
new file mode 100644
index 0000000000..d3896c9844
--- /dev/null
+++ b/intro_flutter_gpu/step_05/linux/.gitignore
@@ -0,0 +1 @@
+flutter/ephemeral
diff --git a/intro_flutter_gpu/step_05/linux/CMakeLists.txt b/intro_flutter_gpu/step_05/linux/CMakeLists.txt
new file mode 100644
index 0000000000..a487a7465e
--- /dev/null
+++ b/intro_flutter_gpu/step_05/linux/CMakeLists.txt
@@ -0,0 +1,128 @@
+# Project-level configuration.
+cmake_minimum_required(VERSION 3.13)
+project(runner LANGUAGES CXX)
+
+# The name of the executable created for the application. Change this to change
+# the on-disk name of your application.
+set(BINARY_NAME "intro_flutter_gpu")
+# The unique GTK application identifier for this application. See:
+# https://wiki.gnome.org/HowDoI/ChooseApplicationID
+set(APPLICATION_ID "com.example.intro_flutter_gpu")
+
+# Explicitly opt in to modern CMake behaviors to avoid warnings with recent
+# versions of CMake.
+cmake_policy(SET CMP0063 NEW)
+
+# Load bundled libraries from the lib/ directory relative to the binary.
+set(CMAKE_INSTALL_RPATH "$ORIGIN/lib")
+
+# Root filesystem for cross-building.
+if(FLUTTER_TARGET_PLATFORM_SYSROOT)
+  set(CMAKE_SYSROOT ${FLUTTER_TARGET_PLATFORM_SYSROOT})
+  set(CMAKE_FIND_ROOT_PATH ${CMAKE_SYSROOT})
+  set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+  set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
+  set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+  set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+endif()
+
+# Define build configuration options.
+if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
+  set(CMAKE_BUILD_TYPE "Debug" CACHE
+    STRING "Flutter build mode" FORCE)
+  set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS
+    "Debug" "Profile" "Release")
+endif()
+
+# Compilation settings that should be applied to most targets.
+#
+# Be cautious about adding new options here, as plugins use this function by
+# default. In most cases, you should add new options to specific targets instead
+# of modifying this function.
+function(APPLY_STANDARD_SETTINGS TARGET)
+  target_compile_features(${TARGET} PUBLIC cxx_std_14)
+  target_compile_options(${TARGET} PRIVATE -Wall -Werror)
+  target_compile_options(${TARGET} PRIVATE "$<$<NOT:$<CONFIG:Debug>>:-O3>")
+  target_compile_definitions(${TARGET} PRIVATE "$<$<NOT:$<CONFIG:Debug>>:NDEBUG>")
+endfunction()
+
+# Flutter library and tool build rules.
+set(FLUTTER_MANAGED_DIR "${CMAKE_CURRENT_SOURCE_DIR}/flutter")
+add_subdirectory(${FLUTTER_MANAGED_DIR})
+
+# System-level dependencies.
+find_package(PkgConfig REQUIRED)
+pkg_check_modules(GTK REQUIRED IMPORTED_TARGET gtk+-3.0)
+
+# Application build; see runner/CMakeLists.txt.
+add_subdirectory("runner")
+
+# Run the Flutter tool portions of the build. This must not be removed.
+add_dependencies(${BINARY_NAME} flutter_assemble)
+
+# Only the install-generated bundle's copy of the executable will launch
+# correctly, since the resources must in the right relative locations. To avoid
+# people trying to run the unbundled copy, put it in a subdirectory instead of
+# the default top-level location.
+set_target_properties(${BINARY_NAME}
+  PROPERTIES
+  RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/intermediates_do_not_run"
+)
+
+
+# Generated plugin build rules, which manage building the plugins and adding
+# them to the application.
+include(flutter/generated_plugins.cmake)
+
+
+# === Installation ===
+# By default, "installing" just makes a relocatable bundle in the build
+# directory.
+set(BUILD_BUNDLE_DIR "${PROJECT_BINARY_DIR}/bundle")
+if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
+  set(CMAKE_INSTALL_PREFIX "${BUILD_BUNDLE_DIR}" CACHE PATH "..." FORCE)
+endif()
+
+# Start with a clean build bundle directory every time.
+install(CODE "
+  file(REMOVE_RECURSE \"${BUILD_BUNDLE_DIR}/\")
+  " COMPONENT Runtime)
+
+set(INSTALL_BUNDLE_DATA_DIR "${CMAKE_INSTALL_PREFIX}/data")
+set(INSTALL_BUNDLE_LIB_DIR "${CMAKE_INSTALL_PREFIX}/lib")
+
+install(TARGETS ${BINARY_NAME} RUNTIME DESTINATION "${CMAKE_INSTALL_PREFIX}"
+  COMPONENT Runtime)
+
+install(FILES "${FLUTTER_ICU_DATA_FILE}" DESTINATION "${INSTALL_BUNDLE_DATA_DIR}"
+  COMPONENT Runtime)
+
+install(FILES "${FLUTTER_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+  COMPONENT Runtime)
+
+foreach(bundled_library ${PLUGIN_BUNDLED_LIBRARIES})
+  install(FILES "${bundled_library}"
+    DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+    COMPONENT Runtime)
+endforeach(bundled_library)
+
+# Copy the native assets provided by the build.dart from all packages.
+set(NATIVE_ASSETS_DIR "${PROJECT_BUILD_DIR}native_assets/linux/")
+install(DIRECTORY "${NATIVE_ASSETS_DIR}"
+   DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+   COMPONENT Runtime)
+
+# Fully re-copy the assets directory on each build to avoid having stale files
+# from a previous install.
+set(FLUTTER_ASSET_DIR_NAME "flutter_assets")
+install(CODE "
+  file(REMOVE_RECURSE \"${INSTALL_BUNDLE_DATA_DIR}/${FLUTTER_ASSET_DIR_NAME}\")
+  " COMPONENT Runtime)
+install(DIRECTORY "${PROJECT_BUILD_DIR}/${FLUTTER_ASSET_DIR_NAME}"
+  DESTINATION "${INSTALL_BUNDLE_DATA_DIR}" COMPONENT Runtime)
+
+# Install the AOT library on non-Debug builds only.
+if(NOT CMAKE_BUILD_TYPE MATCHES "Debug")
+  install(FILES "${AOT_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+    COMPONENT Runtime)
+endif()
diff --git a/intro_flutter_gpu/step_05/linux/flutter/CMakeLists.txt b/intro_flutter_gpu/step_05/linux/flutter/CMakeLists.txt
new file mode 100644
index 0000000000..d5bd01648a
--- /dev/null
+++ b/intro_flutter_gpu/step_05/linux/flutter/CMakeLists.txt
@@ -0,0 +1,88 @@
+# This file controls Flutter-level build steps. It should not be edited.
+cmake_minimum_required(VERSION 3.10)
+
+set(EPHEMERAL_DIR "${CMAKE_CURRENT_SOURCE_DIR}/ephemeral")
+
+# Configuration provided via flutter tool.
+include(${EPHEMERAL_DIR}/generated_config.cmake)
+
+# TODO: Move the rest of this into files in ephemeral. See
+# https://github.com/flutter/flutter/issues/57146.
+
+# Serves the same purpose as list(TRANSFORM ... PREPEND ...),
+# which isn't available in 3.10.
+function(list_prepend LIST_NAME PREFIX)
+    set(NEW_LIST "")
+    foreach(element ${${LIST_NAME}})
+        list(APPEND NEW_LIST "${PREFIX}${element}")
+    endforeach(element)
+    set(${LIST_NAME} "${NEW_LIST}" PARENT_SCOPE)
+endfunction()
+
+# === Flutter Library ===
+# System-level dependencies.
+find_package(PkgConfig REQUIRED)
+pkg_check_modules(GTK REQUIRED IMPORTED_TARGET gtk+-3.0)
+pkg_check_modules(GLIB REQUIRED IMPORTED_TARGET glib-2.0)
+pkg_check_modules(GIO REQUIRED IMPORTED_TARGET gio-2.0)
+
+set(FLUTTER_LIBRARY "${EPHEMERAL_DIR}/libflutter_linux_gtk.so")
+
+# Published to parent scope for install step.
+set(FLUTTER_LIBRARY ${FLUTTER_LIBRARY} PARENT_SCOPE)
+set(FLUTTER_ICU_DATA_FILE "${EPHEMERAL_DIR}/icudtl.dat" PARENT_SCOPE)
+set(PROJECT_BUILD_DIR "${PROJECT_DIR}/build/" PARENT_SCOPE)
+set(AOT_LIBRARY "${PROJECT_DIR}/build/lib/libapp.so" PARENT_SCOPE)
+
+list(APPEND FLUTTER_LIBRARY_HEADERS
+  "fl_basic_message_channel.h"
+  "fl_binary_codec.h"
+  "fl_binary_messenger.h"
+  "fl_dart_project.h"
+  "fl_engine.h"
+  "fl_json_message_codec.h"
+  "fl_json_method_codec.h"
+  "fl_message_codec.h"
+  "fl_method_call.h"
+  "fl_method_channel.h"
+  "fl_method_codec.h"
+  "fl_method_response.h"
+  "fl_plugin_registrar.h"
+  "fl_plugin_registry.h"
+  "fl_standard_message_codec.h"
+  "fl_standard_method_codec.h"
+  "fl_string_codec.h"
+  "fl_value.h"
+  "fl_view.h"
+  "flutter_linux.h"
+)
+list_prepend(FLUTTER_LIBRARY_HEADERS "${EPHEMERAL_DIR}/flutter_linux/")
+add_library(flutter INTERFACE)
+target_include_directories(flutter INTERFACE
+  "${EPHEMERAL_DIR}"
+)
+target_link_libraries(flutter INTERFACE "${FLUTTER_LIBRARY}")
+target_link_libraries(flutter INTERFACE
+  PkgConfig::GTK
+  PkgConfig::GLIB
+  PkgConfig::GIO
+)
+add_dependencies(flutter flutter_assemble)
+
+# === Flutter tool backend ===
+# _phony_ is a non-existent file to force this command to run every time,
+# since currently there's no way to get a full input/output list from the
+# flutter tool.
+add_custom_command(
+  OUTPUT ${FLUTTER_LIBRARY} ${FLUTTER_LIBRARY_HEADERS}
+    ${CMAKE_CURRENT_BINARY_DIR}/_phony_
+  COMMAND ${CMAKE_COMMAND} -E env
+    ${FLUTTER_TOOL_ENVIRONMENT}
+    "${FLUTTER_ROOT}/packages/flutter_tools/bin/tool_backend.sh"
+      ${FLUTTER_TARGET_PLATFORM} ${CMAKE_BUILD_TYPE}
+  VERBATIM
+)
+add_custom_target(flutter_assemble DEPENDS
+  "${FLUTTER_LIBRARY}"
+  ${FLUTTER_LIBRARY_HEADERS}
+)
diff --git a/intro_flutter_gpu/step_05/linux/flutter/generated_plugin_registrant.cc b/intro_flutter_gpu/step_05/linux/flutter/generated_plugin_registrant.cc
new file mode 100644
index 0000000000..e71a16d23d
--- /dev/null
+++ b/intro_flutter_gpu/step_05/linux/flutter/generated_plugin_registrant.cc
@@ -0,0 +1,11 @@
+//
+//  Generated file. Do not edit.
+//
+
+// clang-format off
+
+#include "generated_plugin_registrant.h"
+
+
+void fl_register_plugins(FlPluginRegistry* registry) {
+}
diff --git a/intro_flutter_gpu/step_05/linux/flutter/generated_plugin_registrant.h b/intro_flutter_gpu/step_05/linux/flutter/generated_plugin_registrant.h
new file mode 100644
index 0000000000..e0f0a47bc0
--- /dev/null
+++ b/intro_flutter_gpu/step_05/linux/flutter/generated_plugin_registrant.h
@@ -0,0 +1,15 @@
+//
+//  Generated file. Do not edit.
+//
+
+// clang-format off
+
+#ifndef GENERATED_PLUGIN_REGISTRANT_
+#define GENERATED_PLUGIN_REGISTRANT_
+
+#include <flutter_linux/flutter_linux.h>
+
+// Registers Flutter plugins.
+void fl_register_plugins(FlPluginRegistry* registry);
+
+#endif  // GENERATED_PLUGIN_REGISTRANT_
diff --git a/intro_flutter_gpu/step_05/linux/flutter/generated_plugins.cmake b/intro_flutter_gpu/step_05/linux/flutter/generated_plugins.cmake
new file mode 100644
index 0000000000..2e1de87a7e
--- /dev/null
+++ b/intro_flutter_gpu/step_05/linux/flutter/generated_plugins.cmake
@@ -0,0 +1,23 @@
+#
+# Generated file, do not edit.
+#
+
+list(APPEND FLUTTER_PLUGIN_LIST
+)
+
+list(APPEND FLUTTER_FFI_PLUGIN_LIST
+)
+
+set(PLUGIN_BUNDLED_LIBRARIES)
+
+foreach(plugin ${FLUTTER_PLUGIN_LIST})
+  add_subdirectory(flutter/ephemeral/.plugin_symlinks/${plugin}/linux plugins/${plugin})
+  target_link_libraries(${BINARY_NAME} PRIVATE ${plugin}_plugin)
+  list(APPEND PLUGIN_BUNDLED_LIBRARIES $<TARGET_FILE:${plugin}_plugin>)
+  list(APPEND PLUGIN_BUNDLED_LIBRARIES ${${plugin}_bundled_libraries})
+endforeach(plugin)
+
+foreach(ffi_plugin ${FLUTTER_FFI_PLUGIN_LIST})
+  add_subdirectory(flutter/ephemeral/.plugin_symlinks/${ffi_plugin}/linux plugins/${ffi_plugin})
+  list(APPEND PLUGIN_BUNDLED_LIBRARIES ${${ffi_plugin}_bundled_libraries})
+endforeach(ffi_plugin)
diff --git a/intro_flutter_gpu/step_05/linux/runner/CMakeLists.txt b/intro_flutter_gpu/step_05/linux/runner/CMakeLists.txt
new file mode 100644
index 0000000000..e97dabc702
--- /dev/null
+++ b/intro_flutter_gpu/step_05/linux/runner/CMakeLists.txt
@@ -0,0 +1,26 @@
+cmake_minimum_required(VERSION 3.13)
+project(runner LANGUAGES CXX)
+
+# Define the application target. To change its name, change BINARY_NAME in the
+# top-level CMakeLists.txt, not the value here, or `flutter run` will no longer
+# work.
+#
+# Any new source files that you add to the application should be added here.
+add_executable(${BINARY_NAME}
+  "main.cc"
+  "my_application.cc"
+  "${FLUTTER_MANAGED_DIR}/generated_plugin_registrant.cc"
+)
+
+# Apply the standard set of build settings. This can be removed for applications
+# that need different build settings.
+apply_standard_settings(${BINARY_NAME})
+
+# Add preprocessor definitions for the application ID.
+add_definitions(-DAPPLICATION_ID="${APPLICATION_ID}")
+
+# Add dependency libraries. Add any application-specific dependencies here.
+target_link_libraries(${BINARY_NAME} PRIVATE flutter)
+target_link_libraries(${BINARY_NAME} PRIVATE PkgConfig::GTK)
+
+target_include_directories(${BINARY_NAME} PRIVATE "${CMAKE_SOURCE_DIR}")
diff --git a/intro_flutter_gpu/step_05/linux/runner/main.cc b/intro_flutter_gpu/step_05/linux/runner/main.cc
new file mode 100644
index 0000000000..e7c5c54370
--- /dev/null
+++ b/intro_flutter_gpu/step_05/linux/runner/main.cc
@@ -0,0 +1,6 @@
+#include "my_application.h"
+
+int main(int argc, char** argv) {
+  g_autoptr(MyApplication) app = my_application_new();
+  return g_application_run(G_APPLICATION(app), argc, argv);
+}
diff --git a/intro_flutter_gpu/step_05/linux/runner/my_application.cc b/intro_flutter_gpu/step_05/linux/runner/my_application.cc
new file mode 100644
index 0000000000..6c04c01067
--- /dev/null
+++ b/intro_flutter_gpu/step_05/linux/runner/my_application.cc
@@ -0,0 +1,130 @@
+#include "my_application.h"
+
+#include <flutter_linux/flutter_linux.h>
+#ifdef GDK_WINDOWING_X11
+#include <gdk/gdkx.h>
+#endif
+
+#include "flutter/generated_plugin_registrant.h"
+
+struct _MyApplication {
+  GtkApplication parent_instance;
+  char** dart_entrypoint_arguments;
+};
+
+G_DEFINE_TYPE(MyApplication, my_application, GTK_TYPE_APPLICATION)
+
+// Implements GApplication::activate.
+static void my_application_activate(GApplication* application) {
+  MyApplication* self = MY_APPLICATION(application);
+  GtkWindow* window =
+      GTK_WINDOW(gtk_application_window_new(GTK_APPLICATION(application)));
+
+  // Use a header bar when running in GNOME as this is the common style used
+  // by applications and is the setup most users will be using (e.g. Ubuntu
+  // desktop).
+  // If running on X and not using GNOME then just use a traditional title bar
+  // in case the window manager does more exotic layout, e.g. tiling.
+  // If running on Wayland assume the header bar will work (may need changing
+  // if future cases occur).
+  gboolean use_header_bar = TRUE;
+#ifdef GDK_WINDOWING_X11
+  GdkScreen* screen = gtk_window_get_screen(window);
+  if (GDK_IS_X11_SCREEN(screen)) {
+    const gchar* wm_name = gdk_x11_screen_get_window_manager_name(screen);
+    if (g_strcmp0(wm_name, "GNOME Shell") != 0) {
+      use_header_bar = FALSE;
+    }
+  }
+#endif
+  if (use_header_bar) {
+    GtkHeaderBar* header_bar = GTK_HEADER_BAR(gtk_header_bar_new());
+    gtk_widget_show(GTK_WIDGET(header_bar));
+    gtk_header_bar_set_title(header_bar, "intro_flutter_gpu");
+    gtk_header_bar_set_show_close_button(header_bar, TRUE);
+    gtk_window_set_titlebar(window, GTK_WIDGET(header_bar));
+  } else {
+    gtk_window_set_title(window, "intro_flutter_gpu");
+  }
+
+  gtk_window_set_default_size(window, 1280, 720);
+  gtk_widget_show(GTK_WIDGET(window));
+
+  g_autoptr(FlDartProject) project = fl_dart_project_new();
+  fl_dart_project_set_dart_entrypoint_arguments(project, self->dart_entrypoint_arguments);
+
+  FlView* view = fl_view_new(project);
+  gtk_widget_show(GTK_WIDGET(view));
+  gtk_container_add(GTK_CONTAINER(window), GTK_WIDGET(view));
+
+  fl_register_plugins(FL_PLUGIN_REGISTRY(view));
+
+  gtk_widget_grab_focus(GTK_WIDGET(view));
+}
+
+// Implements GApplication::local_command_line.
+static gboolean my_application_local_command_line(GApplication* application, gchar*** arguments, int* exit_status) {
+  MyApplication* self = MY_APPLICATION(application);
+  // Strip out the first argument as it is the binary name.
+  self->dart_entrypoint_arguments = g_strdupv(*arguments + 1);
+
+  g_autoptr(GError) error = nullptr;
+  if (!g_application_register(application, nullptr, &error)) {
+     g_warning("Failed to register: %s", error->message);
+     *exit_status = 1;
+     return TRUE;
+  }
+
+  g_application_activate(application);
+  *exit_status = 0;
+
+  return TRUE;
+}
+
+// Implements GApplication::startup.
+static void my_application_startup(GApplication* application) {
+  //MyApplication* self = MY_APPLICATION(object);
+
+  // Perform any actions required at application startup.
+
+  G_APPLICATION_CLASS(my_application_parent_class)->startup(application);
+}
+
+// Implements GApplication::shutdown.
+static void my_application_shutdown(GApplication* application) {
+  //MyApplication* self = MY_APPLICATION(object);
+
+  // Perform any actions required at application shutdown.
+
+  G_APPLICATION_CLASS(my_application_parent_class)->shutdown(application);
+}
+
+// Implements GObject::dispose.
+static void my_application_dispose(GObject* object) {
+  MyApplication* self = MY_APPLICATION(object);
+  g_clear_pointer(&self->dart_entrypoint_arguments, g_strfreev);
+  G_OBJECT_CLASS(my_application_parent_class)->dispose(object);
+}
+
+static void my_application_class_init(MyApplicationClass* klass) {
+  G_APPLICATION_CLASS(klass)->activate = my_application_activate;
+  G_APPLICATION_CLASS(klass)->local_command_line = my_application_local_command_line;
+  G_APPLICATION_CLASS(klass)->startup = my_application_startup;
+  G_APPLICATION_CLASS(klass)->shutdown = my_application_shutdown;
+  G_OBJECT_CLASS(klass)->dispose = my_application_dispose;
+}
+
+static void my_application_init(MyApplication* self) {}
+
+MyApplication* my_application_new() {
+  // Set the program name to the application ID, which helps various systems
+  // like GTK and desktop environments map this running application to its
+  // corresponding .desktop file. This ensures better integration by allowing
+  // the application to be recognized beyond its binary name.
+  g_set_prgname(APPLICATION_ID);
+
+  return MY_APPLICATION(g_object_new(my_application_get_type(),
+                                     "application-id", APPLICATION_ID,
+                                     "flags", G_APPLICATION_NON_UNIQUE,
+                                     nullptr));
+}
diff --git a/intro_flutter_gpu/step_05/linux/runner/my_application.h b/intro_flutter_gpu/step_05/linux/runner/my_application.h
new file mode 100644
index 0000000000..72271d5e41
--- /dev/null
+++ b/intro_flutter_gpu/step_05/linux/runner/my_application.h
@@ -0,0 +1,18 @@
+#ifndef FLUTTER_MY_APPLICATION_H_
+#define FLUTTER_MY_APPLICATION_H_
+
+#include <gtk/gtk.h>
+
+G_DECLARE_FINAL_TYPE(MyApplication, my_application, MY, APPLICATION,
+                     GtkApplication)
+
+/**
+ * my_application_new:
+ *
+ * Creates a new Flutter-based application.
+ *
+ * Returns: a new #MyApplication.
+ */
+MyApplication* my_application_new();
+
+#endif  // FLUTTER_MY_APPLICATION_H_
diff --git a/intro_flutter_gpu/step_05/macos/Runner/Configs/AppInfo.xcconfig b/intro_flutter_gpu/step_05/macos/Runner/Configs/AppInfo.xcconfig
index 87348d3f8a..e4fb8e9e62 100644
--- a/intro_flutter_gpu/step_05/macos/Runner/Configs/AppInfo.xcconfig
+++ b/intro_flutter_gpu/step_05/macos/Runner/Configs/AppInfo.xcconfig
@@ -11,4 +11,4 @@ PRODUCT_NAME = intro_flutter_gpu
 PRODUCT_BUNDLE_IDENTIFIER = com.example.introFlutterGpu
 
 // The copyright displayed in application information
-PRODUCT_COPYRIGHT = Copyright © 2024 com.example. All rights reserved.
+PRODUCT_COPYRIGHT = Copyright © 2025 com.example. All rights reserved.
diff --git a/intro_flutter_gpu/step_05/windows/runner/Runner.rc b/intro_flutter_gpu/step_05/windows/runner/Runner.rc
index a76c0ec0fc..26e1dbe547 100644
--- a/intro_flutter_gpu/step_05/windows/runner/Runner.rc
+++ b/intro_flutter_gpu/step_05/windows/runner/Runner.rc
@@ -93,7 +93,7 @@ BEGIN
             VALUE "FileDescription", "intro_flutter_gpu" "\0"
             VALUE "FileVersion", VERSION_AS_STRING "\0"
             VALUE "InternalName", "intro_flutter_gpu" "\0"
-            VALUE "LegalCopyright", "Copyright (C) 2024 com.example. All rights reserved." "\0"
+            VALUE "LegalCopyright", "Copyright (C) 2025 com.example. All rights reserved." "\0"
             VALUE "OriginalFilename", "intro_flutter_gpu.exe" "\0"
             VALUE "ProductName", "intro_flutter_gpu" "\0"
             VALUE "ProductVersion", VERSION_AS_STRING "\0"
diff --git a/intro_flutter_gpu/step_06/android/.gitignore b/intro_flutter_gpu/step_06/android/.gitignore
index 55afd919c6..be3943c96d 100644
--- a/intro_flutter_gpu/step_06/android/.gitignore
+++ b/intro_flutter_gpu/step_06/android/.gitignore
@@ -5,6 +5,7 @@ gradle-wrapper.jar
 /gradlew.bat
 /local.properties
 GeneratedPluginRegistrant.java
+.cxx/
 
 # Remember to never publicly share your keystore.
 # See https://flutter.dev/to/reference-keystore
diff --git a/intro_flutter_gpu/step_06/android/app/build.gradle.kts b/intro_flutter_gpu/step_06/android/app/build.gradle.kts
index 857326fb7b..ba03f47e22 100644
--- a/intro_flutter_gpu/step_06/android/app/build.gradle.kts
+++ b/intro_flutter_gpu/step_06/android/app/build.gradle.kts
@@ -11,12 +11,12 @@ android {
     ndkVersion = flutter.ndkVersion
 
     compileOptions {
-        sourceCompatibility = JavaVersion.VERSION_1_8
-        targetCompatibility = JavaVersion.VERSION_1_8
+        sourceCompatibility = JavaVersion.VERSION_11
+        targetCompatibility = JavaVersion.VERSION_11
     }
 
     kotlinOptions {
-        jvmTarget = JavaVersion.VERSION_1_8.toString()
+        jvmTarget = JavaVersion.VERSION_11.toString()
     }
 
     defaultConfig {
diff --git a/intro_flutter_gpu/step_06/android/app/src/main/kotlin/com/example/intro_flutter_gpu/MainActivity.kt b/intro_flutter_gpu/step_06/android/app/src/main/kotlin/com/example/intro_flutter_gpu/MainActivity.kt
index 28c6a72dea..309b877fe4 100644
--- a/intro_flutter_gpu/step_06/android/app/src/main/kotlin/com/example/intro_flutter_gpu/MainActivity.kt
+++ b/intro_flutter_gpu/step_06/android/app/src/main/kotlin/com/example/intro_flutter_gpu/MainActivity.kt
@@ -2,4 +2,4 @@ package com.example.intro_flutter_gpu
 
 import io.flutter.embedding.android.FlutterActivity
 
-class MainActivity: FlutterActivity()
+class MainActivity : FlutterActivity()
diff --git a/intro_flutter_gpu/step_06/linux/.gitignore b/intro_flutter_gpu/step_06/linux/.gitignore
new file mode 100644
index 0000000000..d3896c9844
--- /dev/null
+++ b/intro_flutter_gpu/step_06/linux/.gitignore
@@ -0,0 +1 @@
+flutter/ephemeral
diff --git a/intro_flutter_gpu/step_06/linux/CMakeLists.txt b/intro_flutter_gpu/step_06/linux/CMakeLists.txt
new file mode 100644
index 0000000000..a487a7465e
--- /dev/null
+++ b/intro_flutter_gpu/step_06/linux/CMakeLists.txt
@@ -0,0 +1,128 @@
+# Project-level configuration.
+cmake_minimum_required(VERSION 3.13)
+project(runner LANGUAGES CXX)
+
+# The name of the executable created for the application. Change this to change
+# the on-disk name of your application.
+set(BINARY_NAME "intro_flutter_gpu")
+# The unique GTK application identifier for this application. See:
+# https://wiki.gnome.org/HowDoI/ChooseApplicationID
+set(APPLICATION_ID "com.example.intro_flutter_gpu")
+
+# Explicitly opt in to modern CMake behaviors to avoid warnings with recent
+# versions of CMake.
+cmake_policy(SET CMP0063 NEW)
+
+# Load bundled libraries from the lib/ directory relative to the binary.
+set(CMAKE_INSTALL_RPATH "$ORIGIN/lib")
+
+# Root filesystem for cross-building.
+if(FLUTTER_TARGET_PLATFORM_SYSROOT)
+  set(CMAKE_SYSROOT ${FLUTTER_TARGET_PLATFORM_SYSROOT})
+  set(CMAKE_FIND_ROOT_PATH ${CMAKE_SYSROOT})
+  set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+  set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
+  set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+  set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+endif()
+
+# Define build configuration options.
+if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
+  set(CMAKE_BUILD_TYPE "Debug" CACHE
+    STRING "Flutter build mode" FORCE)
+  set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS
+    "Debug" "Profile" "Release")
+endif()
+
+# Compilation settings that should be applied to most targets.
+#
+# Be cautious about adding new options here, as plugins use this function by
+# default. In most cases, you should add new options to specific targets instead
+# of modifying this function.
+function(APPLY_STANDARD_SETTINGS TARGET)
+  target_compile_features(${TARGET} PUBLIC cxx_std_14)
+  target_compile_options(${TARGET} PRIVATE -Wall -Werror)
+  target_compile_options(${TARGET} PRIVATE "$<$<NOT:$<CONFIG:Debug>>:-O3>")
+  target_compile_definitions(${TARGET} PRIVATE "$<$<NOT:$<CONFIG:Debug>>:NDEBUG>")
+endfunction()
+
+# Flutter library and tool build rules.
+set(FLUTTER_MANAGED_DIR "${CMAKE_CURRENT_SOURCE_DIR}/flutter")
+add_subdirectory(${FLUTTER_MANAGED_DIR})
+
+# System-level dependencies.
+find_package(PkgConfig REQUIRED)
+pkg_check_modules(GTK REQUIRED IMPORTED_TARGET gtk+-3.0)
+
+# Application build; see runner/CMakeLists.txt.
+add_subdirectory("runner")
+
+# Run the Flutter tool portions of the build. This must not be removed.
+add_dependencies(${BINARY_NAME} flutter_assemble)
+
+# Only the install-generated bundle's copy of the executable will launch
+# correctly, since the resources must in the right relative locations. To avoid
+# people trying to run the unbundled copy, put it in a subdirectory instead of
+# the default top-level location.
+set_target_properties(${BINARY_NAME}
+  PROPERTIES
+  RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/intermediates_do_not_run"
+)
+
+
+# Generated plugin build rules, which manage building the plugins and adding
+# them to the application.
+include(flutter/generated_plugins.cmake)
+
+
+# === Installation ===
+# By default, "installing" just makes a relocatable bundle in the build
+# directory.
+set(BUILD_BUNDLE_DIR "${PROJECT_BINARY_DIR}/bundle")
+if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
+  set(CMAKE_INSTALL_PREFIX "${BUILD_BUNDLE_DIR}" CACHE PATH "..." FORCE)
+endif()
+
+# Start with a clean build bundle directory every time.
+install(CODE "
+  file(REMOVE_RECURSE \"${BUILD_BUNDLE_DIR}/\")
+  " COMPONENT Runtime)
+
+set(INSTALL_BUNDLE_DATA_DIR "${CMAKE_INSTALL_PREFIX}/data")
+set(INSTALL_BUNDLE_LIB_DIR "${CMAKE_INSTALL_PREFIX}/lib")
+
+install(TARGETS ${BINARY_NAME} RUNTIME DESTINATION "${CMAKE_INSTALL_PREFIX}"
+  COMPONENT Runtime)
+
+install(FILES "${FLUTTER_ICU_DATA_FILE}" DESTINATION "${INSTALL_BUNDLE_DATA_DIR}"
+  COMPONENT Runtime)
+
+install(FILES "${FLUTTER_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+  COMPONENT Runtime)
+
+foreach(bundled_library ${PLUGIN_BUNDLED_LIBRARIES})
+  install(FILES "${bundled_library}"
+    DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+    COMPONENT Runtime)
+endforeach(bundled_library)
+
+# Copy the native assets provided by the build.dart from all packages.
+set(NATIVE_ASSETS_DIR "${PROJECT_BUILD_DIR}native_assets/linux/")
+install(DIRECTORY "${NATIVE_ASSETS_DIR}"
+   DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+   COMPONENT Runtime)
+
+# Fully re-copy the assets directory on each build to avoid having stale files
+# from a previous install.
+set(FLUTTER_ASSET_DIR_NAME "flutter_assets")
+install(CODE "
+  file(REMOVE_RECURSE \"${INSTALL_BUNDLE_DATA_DIR}/${FLUTTER_ASSET_DIR_NAME}\")
+  " COMPONENT Runtime)
+install(DIRECTORY "${PROJECT_BUILD_DIR}/${FLUTTER_ASSET_DIR_NAME}"
+  DESTINATION "${INSTALL_BUNDLE_DATA_DIR}" COMPONENT Runtime)
+
+# Install the AOT library on non-Debug builds only.
+if(NOT CMAKE_BUILD_TYPE MATCHES "Debug")
+  install(FILES "${AOT_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+    COMPONENT Runtime)
+endif()
diff --git a/intro_flutter_gpu/step_06/linux/flutter/CMakeLists.txt b/intro_flutter_gpu/step_06/linux/flutter/CMakeLists.txt
new file mode 100644
index 0000000000..d5bd01648a
--- /dev/null
+++ b/intro_flutter_gpu/step_06/linux/flutter/CMakeLists.txt
@@ -0,0 +1,88 @@
+# This file controls Flutter-level build steps. It should not be edited.
+cmake_minimum_required(VERSION 3.10)
+
+set(EPHEMERAL_DIR "${CMAKE_CURRENT_SOURCE_DIR}/ephemeral")
+
+# Configuration provided via flutter tool.
+include(${EPHEMERAL_DIR}/generated_config.cmake)
+
+# TODO: Move the rest of this into files in ephemeral. See
+# https://github.com/flutter/flutter/issues/57146.
+
+# Serves the same purpose as list(TRANSFORM ... PREPEND ...),
+# which isn't available in 3.10.
+function(list_prepend LIST_NAME PREFIX)
+    set(NEW_LIST "")
+    foreach(element ${${LIST_NAME}})
+        list(APPEND NEW_LIST "${PREFIX}${element}")
+    endforeach(element)
+    set(${LIST_NAME} "${NEW_LIST}" PARENT_SCOPE)
+endfunction()
+
+# === Flutter Library ===
+# System-level dependencies.
+find_package(PkgConfig REQUIRED)
+pkg_check_modules(GTK REQUIRED IMPORTED_TARGET gtk+-3.0)
+pkg_check_modules(GLIB REQUIRED IMPORTED_TARGET glib-2.0)
+pkg_check_modules(GIO REQUIRED IMPORTED_TARGET gio-2.0)
+
+set(FLUTTER_LIBRARY "${EPHEMERAL_DIR}/libflutter_linux_gtk.so")
+
+# Published to parent scope for install step.
+set(FLUTTER_LIBRARY ${FLUTTER_LIBRARY} PARENT_SCOPE)
+set(FLUTTER_ICU_DATA_FILE "${EPHEMERAL_DIR}/icudtl.dat" PARENT_SCOPE)
+set(PROJECT_BUILD_DIR "${PROJECT_DIR}/build/" PARENT_SCOPE)
+set(AOT_LIBRARY "${PROJECT_DIR}/build/lib/libapp.so" PARENT_SCOPE)
+
+list(APPEND FLUTTER_LIBRARY_HEADERS
+  "fl_basic_message_channel.h"
+  "fl_binary_codec.h"
+  "fl_binary_messenger.h"
+  "fl_dart_project.h"
+  "fl_engine.h"
+  "fl_json_message_codec.h"
+  "fl_json_method_codec.h"
+  "fl_message_codec.h"
+  "fl_method_call.h"
+  "fl_method_channel.h"
+  "fl_method_codec.h"
+  "fl_method_response.h"
+  "fl_plugin_registrar.h"
+  "fl_plugin_registry.h"
+  "fl_standard_message_codec.h"
+  "fl_standard_method_codec.h"
+  "fl_string_codec.h"
+  "fl_value.h"
+  "fl_view.h"
+  "flutter_linux.h"
+)
+list_prepend(FLUTTER_LIBRARY_HEADERS "${EPHEMERAL_DIR}/flutter_linux/")
+add_library(flutter INTERFACE)
+target_include_directories(flutter INTERFACE
+  "${EPHEMERAL_DIR}"
+)
+target_link_libraries(flutter INTERFACE "${FLUTTER_LIBRARY}")
+target_link_libraries(flutter INTERFACE
+  PkgConfig::GTK
+  PkgConfig::GLIB
+  PkgConfig::GIO
+)
+add_dependencies(flutter flutter_assemble)
+
+# === Flutter tool backend ===
+# _phony_ is a non-existent file to force this command to run every time,
+# since currently there's no way to get a full input/output list from the
+# flutter tool.
+add_custom_command(
+  OUTPUT ${FLUTTER_LIBRARY} ${FLUTTER_LIBRARY_HEADERS}
+    ${CMAKE_CURRENT_BINARY_DIR}/_phony_
+  COMMAND ${CMAKE_COMMAND} -E env
+    ${FLUTTER_TOOL_ENVIRONMENT}
+    "${FLUTTER_ROOT}/packages/flutter_tools/bin/tool_backend.sh"
+      ${FLUTTER_TARGET_PLATFORM} ${CMAKE_BUILD_TYPE}
+  VERBATIM
+)
+add_custom_target(flutter_assemble DEPENDS
+  "${FLUTTER_LIBRARY}"
+  ${FLUTTER_LIBRARY_HEADERS}
+)
diff --git a/intro_flutter_gpu/step_06/linux/flutter/generated_plugin_registrant.cc b/intro_flutter_gpu/step_06/linux/flutter/generated_plugin_registrant.cc
new file mode 100644
index 0000000000..e71a16d23d
--- /dev/null
+++ b/intro_flutter_gpu/step_06/linux/flutter/generated_plugin_registrant.cc
@@ -0,0 +1,11 @@
+//
+//  Generated file. Do not edit.
+//
+
+// clang-format off
+
+#include "generated_plugin_registrant.h"
+
+
+void fl_register_plugins(FlPluginRegistry* registry) {
+}
diff --git a/intro_flutter_gpu/step_06/linux/flutter/generated_plugin_registrant.h b/intro_flutter_gpu/step_06/linux/flutter/generated_plugin_registrant.h
new file mode 100644
index 0000000000..e0f0a47bc0
--- /dev/null
+++ b/intro_flutter_gpu/step_06/linux/flutter/generated_plugin_registrant.h
@@ -0,0 +1,15 @@
+//
+//  Generated file. Do not edit.
+//
+
+// clang-format off
+
+#ifndef GENERATED_PLUGIN_REGISTRANT_
+#define GENERATED_PLUGIN_REGISTRANT_
+
+#include <flutter_linux/flutter_linux.h>
+
+// Registers Flutter plugins.
+void fl_register_plugins(FlPluginRegistry* registry);
+
+#endif  // GENERATED_PLUGIN_REGISTRANT_
diff --git a/intro_flutter_gpu/step_06/linux/flutter/generated_plugins.cmake b/intro_flutter_gpu/step_06/linux/flutter/generated_plugins.cmake
new file mode 100644
index 0000000000..2e1de87a7e
--- /dev/null
+++ b/intro_flutter_gpu/step_06/linux/flutter/generated_plugins.cmake
@@ -0,0 +1,23 @@
+#
+# Generated file, do not edit.
+#
+
+list(APPEND FLUTTER_PLUGIN_LIST
+)
+
+list(APPEND FLUTTER_FFI_PLUGIN_LIST
+)
+
+set(PLUGIN_BUNDLED_LIBRARIES)
+
+foreach(plugin ${FLUTTER_PLUGIN_LIST})
+  add_subdirectory(flutter/ephemeral/.plugin_symlinks/${plugin}/linux plugins/${plugin})
+  target_link_libraries(${BINARY_NAME} PRIVATE ${plugin}_plugin)
+  list(APPEND PLUGIN_BUNDLED_LIBRARIES $<TARGET_FILE:${plugin}_plugin>)
+  list(APPEND PLUGIN_BUNDLED_LIBRARIES ${${plugin}_bundled_libraries})
+endforeach(plugin)
+
+foreach(ffi_plugin ${FLUTTER_FFI_PLUGIN_LIST})
+  add_subdirectory(flutter/ephemeral/.plugin_symlinks/${ffi_plugin}/linux plugins/${ffi_plugin})
+  list(APPEND PLUGIN_BUNDLED_LIBRARIES ${${ffi_plugin}_bundled_libraries})
+endforeach(ffi_plugin)
diff --git a/intro_flutter_gpu/step_06/linux/runner/CMakeLists.txt b/intro_flutter_gpu/step_06/linux/runner/CMakeLists.txt
new file mode 100644
index 0000000000..e97dabc702
--- /dev/null
+++ b/intro_flutter_gpu/step_06/linux/runner/CMakeLists.txt
@@ -0,0 +1,26 @@
+cmake_minimum_required(VERSION 3.13)
+project(runner LANGUAGES CXX)
+
+# Define the application target. To change its name, change BINARY_NAME in the
+# top-level CMakeLists.txt, not the value here, or `flutter run` will no longer
+# work.
+#
+# Any new source files that you add to the application should be added here.
+add_executable(${BINARY_NAME}
+  "main.cc"
+  "my_application.cc"
+  "${FLUTTER_MANAGED_DIR}/generated_plugin_registrant.cc"
+)
+
+# Apply the standard set of build settings. This can be removed for applications
+# that need different build settings.
+apply_standard_settings(${BINARY_NAME})
+
+# Add preprocessor definitions for the application ID.
+add_definitions(-DAPPLICATION_ID="${APPLICATION_ID}")
+
+# Add dependency libraries. Add any application-specific dependencies here.
+target_link_libraries(${BINARY_NAME} PRIVATE flutter)
+target_link_libraries(${BINARY_NAME} PRIVATE PkgConfig::GTK)
+
+target_include_directories(${BINARY_NAME} PRIVATE "${CMAKE_SOURCE_DIR}")
diff --git a/intro_flutter_gpu/step_06/linux/runner/main.cc b/intro_flutter_gpu/step_06/linux/runner/main.cc
new file mode 100644
index 0000000000..e7c5c54370
--- /dev/null
+++ b/intro_flutter_gpu/step_06/linux/runner/main.cc
@@ -0,0 +1,6 @@
+#include "my_application.h"
+
+int main(int argc, char** argv) {
+  g_autoptr(MyApplication) app = my_application_new();
+  return g_application_run(G_APPLICATION(app), argc, argv);
+}
diff --git a/intro_flutter_gpu/step_06/linux/runner/my_application.cc b/intro_flutter_gpu/step_06/linux/runner/my_application.cc
new file mode 100644
index 0000000000..6c04c01067
--- /dev/null
+++ b/intro_flutter_gpu/step_06/linux/runner/my_application.cc
@@ -0,0 +1,130 @@
+#include "my_application.h"
+
+#include <flutter_linux/flutter_linux.h>
+#ifdef GDK_WINDOWING_X11
+#include <gdk/gdkx.h>
+#endif
+
+#include "flutter/generated_plugin_registrant.h"
+
+struct _MyApplication {
+  GtkApplication parent_instance;
+  char** dart_entrypoint_arguments;
+};
+
+G_DEFINE_TYPE(MyApplication, my_application, GTK_TYPE_APPLICATION)
+
+// Implements GApplication::activate.
+static void my_application_activate(GApplication* application) {
+  MyApplication* self = MY_APPLICATION(application);
+  GtkWindow* window =
+      GTK_WINDOW(gtk_application_window_new(GTK_APPLICATION(application)));
+
+  // Use a header bar when running in GNOME as this is the common style used
+  // by applications and is the setup most users will be using (e.g. Ubuntu
+  // desktop).
+  // If running on X and not using GNOME then just use a traditional title bar
+  // in case the window manager does more exotic layout, e.g. tiling.
+  // If running on Wayland assume the header bar will work (may need changing
+  // if future cases occur).
+  gboolean use_header_bar = TRUE;
+#ifdef GDK_WINDOWING_X11
+  GdkScreen* screen = gtk_window_get_screen(window);
+  if (GDK_IS_X11_SCREEN(screen)) {
+    const gchar* wm_name = gdk_x11_screen_get_window_manager_name(screen);
+    if (g_strcmp0(wm_name, "GNOME Shell") != 0) {
+      use_header_bar = FALSE;
+    }
+  }
+#endif
+  if (use_header_bar) {
+    GtkHeaderBar* header_bar = GTK_HEADER_BAR(gtk_header_bar_new());
+    gtk_widget_show(GTK_WIDGET(header_bar));
+    gtk_header_bar_set_title(header_bar, "intro_flutter_gpu");
+    gtk_header_bar_set_show_close_button(header_bar, TRUE);
+    gtk_window_set_titlebar(window, GTK_WIDGET(header_bar));
+  } else {
+    gtk_window_set_title(window, "intro_flutter_gpu");
+  }
+
+  gtk_window_set_default_size(window, 1280, 720);
+  gtk_widget_show(GTK_WIDGET(window));
+
+  g_autoptr(FlDartProject) project = fl_dart_project_new();
+  fl_dart_project_set_dart_entrypoint_arguments(project, self->dart_entrypoint_arguments);
+
+  FlView* view = fl_view_new(project);
+  gtk_widget_show(GTK_WIDGET(view));
+  gtk_container_add(GTK_CONTAINER(window), GTK_WIDGET(view));
+
+  fl_register_plugins(FL_PLUGIN_REGISTRY(view));
+
+  gtk_widget_grab_focus(GTK_WIDGET(view));
+}
+
+// Implements GApplication::local_command_line.
+static gboolean my_application_local_command_line(GApplication* application, gchar*** arguments, int* exit_status) {
+  MyApplication* self = MY_APPLICATION(application);
+  // Strip out the first argument as it is the binary name.
+  self->dart_entrypoint_arguments = g_strdupv(*arguments + 1);
+
+  g_autoptr(GError) error = nullptr;
+  if (!g_application_register(application, nullptr, &error)) {
+     g_warning("Failed to register: %s", error->message);
+     *exit_status = 1;
+     return TRUE;
+  }
+
+  g_application_activate(application);
+  *exit_status = 0;
+
+  return TRUE;
+}
+
+// Implements GApplication::startup.
+static void my_application_startup(GApplication* application) {
+  //MyApplication* self = MY_APPLICATION(object);
+
+  // Perform any actions required at application startup.
+
+  G_APPLICATION_CLASS(my_application_parent_class)->startup(application);
+}
+
+// Implements GApplication::shutdown.
+static void my_application_shutdown(GApplication* application) {
+  //MyApplication* self = MY_APPLICATION(object);
+
+  // Perform any actions required at application shutdown.
+
+  G_APPLICATION_CLASS(my_application_parent_class)->shutdown(application);
+}
+
+// Implements GObject::dispose.
+static void my_application_dispose(GObject* object) {
+  MyApplication* self = MY_APPLICATION(object);
+  g_clear_pointer(&self->dart_entrypoint_arguments, g_strfreev);
+  G_OBJECT_CLASS(my_application_parent_class)->dispose(object);
+}
+
+static void my_application_class_init(MyApplicationClass* klass) {
+  G_APPLICATION_CLASS(klass)->activate = my_application_activate;
+  G_APPLICATION_CLASS(klass)->local_command_line = my_application_local_command_line;
+  G_APPLICATION_CLASS(klass)->startup = my_application_startup;
+  G_APPLICATION_CLASS(klass)->shutdown = my_application_shutdown;
+  G_OBJECT_CLASS(klass)->dispose = my_application_dispose;
+}
+
+static void my_application_init(MyApplication* self) {}
+
+MyApplication* my_application_new() {
+  // Set the program name to the application ID, which helps various systems
+  // like GTK and desktop environments map this running application to its
+  // corresponding .desktop file. This ensures better integration by allowing
+  // the application to be recognized beyond its binary name.
+  g_set_prgname(APPLICATION_ID);
+
+  return MY_APPLICATION(g_object_new(my_application_get_type(),
+                                     "application-id", APPLICATION_ID,
+                                     "flags", G_APPLICATION_NON_UNIQUE,
+                                     nullptr));
+}
diff --git a/intro_flutter_gpu/step_06/linux/runner/my_application.h b/intro_flutter_gpu/step_06/linux/runner/my_application.h
new file mode 100644
index 0000000000..72271d5e41
--- /dev/null
+++ b/intro_flutter_gpu/step_06/linux/runner/my_application.h
@@ -0,0 +1,18 @@
+#ifndef FLUTTER_MY_APPLICATION_H_
+#define FLUTTER_MY_APPLICATION_H_
+
+#include <gtk/gtk.h>
+
+G_DECLARE_FINAL_TYPE(MyApplication, my_application, MY, APPLICATION,
+                     GtkApplication)
+
+/**
+ * my_application_new:
+ *
+ * Creates a new Flutter-based application.
+ *
+ * Returns: a new #MyApplication.
+ */
+MyApplication* my_application_new();
+
+#endif  // FLUTTER_MY_APPLICATION_H_
diff --git a/intro_flutter_gpu/step_06/macos/Runner/Configs/AppInfo.xcconfig b/intro_flutter_gpu/step_06/macos/Runner/Configs/AppInfo.xcconfig
index 87348d3f8a..e4fb8e9e62 100644
--- a/intro_flutter_gpu/step_06/macos/Runner/Configs/AppInfo.xcconfig
+++ b/intro_flutter_gpu/step_06/macos/Runner/Configs/AppInfo.xcconfig
@@ -11,4 +11,4 @@ PRODUCT_NAME = intro_flutter_gpu
 PRODUCT_BUNDLE_IDENTIFIER = com.example.introFlutterGpu
 
 // The copyright displayed in application information
-PRODUCT_COPYRIGHT = Copyright © 2024 com.example. All rights reserved.
+PRODUCT_COPYRIGHT = Copyright © 2025 com.example. All rights reserved.
diff --git a/intro_flutter_gpu/step_06/windows/runner/Runner.rc b/intro_flutter_gpu/step_06/windows/runner/Runner.rc
index a76c0ec0fc..26e1dbe547 100644
--- a/intro_flutter_gpu/step_06/windows/runner/Runner.rc
+++ b/intro_flutter_gpu/step_06/windows/runner/Runner.rc
@@ -93,7 +93,7 @@ BEGIN
             VALUE "FileDescription", "intro_flutter_gpu" "\0"
             VALUE "FileVersion", VERSION_AS_STRING "\0"
             VALUE "InternalName", "intro_flutter_gpu" "\0"
-            VALUE "LegalCopyright", "Copyright (C) 2024 com.example. All rights reserved." "\0"
+            VALUE "LegalCopyright", "Copyright (C) 2025 com.example. All rights reserved." "\0"
             VALUE "OriginalFilename", "intro_flutter_gpu.exe" "\0"
             VALUE "ProductName", "intro_flutter_gpu" "\0"
             VALUE "ProductVersion", VERSION_AS_STRING "\0"
diff --git a/intro_flutter_gpu/step_07/android/.gitignore b/intro_flutter_gpu/step_07/android/.gitignore
index 55afd919c6..be3943c96d 100644
--- a/intro_flutter_gpu/step_07/android/.gitignore
+++ b/intro_flutter_gpu/step_07/android/.gitignore
@@ -5,6 +5,7 @@ gradle-wrapper.jar
 /gradlew.bat
 /local.properties
 GeneratedPluginRegistrant.java
+.cxx/
 
 # Remember to never publicly share your keystore.
 # See https://flutter.dev/to/reference-keystore
diff --git a/intro_flutter_gpu/step_07/android/app/build.gradle.kts b/intro_flutter_gpu/step_07/android/app/build.gradle.kts
index 857326fb7b..ba03f47e22 100644
--- a/intro_flutter_gpu/step_07/android/app/build.gradle.kts
+++ b/intro_flutter_gpu/step_07/android/app/build.gradle.kts
@@ -11,12 +11,12 @@ android {
     ndkVersion = flutter.ndkVersion
 
     compileOptions {
-        sourceCompatibility = JavaVersion.VERSION_1_8
-        targetCompatibility = JavaVersion.VERSION_1_8
+        sourceCompatibility = JavaVersion.VERSION_11
+        targetCompatibility = JavaVersion.VERSION_11
     }
 
     kotlinOptions {
-        jvmTarget = JavaVersion.VERSION_1_8.toString()
+        jvmTarget = JavaVersion.VERSION_11.toString()
     }
 
     defaultConfig {
diff --git a/intro_flutter_gpu/step_07/android/app/src/main/kotlin/com/example/intro_flutter_gpu/MainActivity.kt b/intro_flutter_gpu/step_07/android/app/src/main/kotlin/com/example/intro_flutter_gpu/MainActivity.kt
index 28c6a72dea..309b877fe4 100644
--- a/intro_flutter_gpu/step_07/android/app/src/main/kotlin/com/example/intro_flutter_gpu/MainActivity.kt
+++ b/intro_flutter_gpu/step_07/android/app/src/main/kotlin/com/example/intro_flutter_gpu/MainActivity.kt
@@ -2,4 +2,4 @@ package com.example.intro_flutter_gpu
 
 import io.flutter.embedding.android.FlutterActivity
 
-class MainActivity: FlutterActivity()
+class MainActivity : FlutterActivity()
diff --git a/intro_flutter_gpu/step_07/linux/.gitignore b/intro_flutter_gpu/step_07/linux/.gitignore
new file mode 100644
index 0000000000..d3896c9844
--- /dev/null
+++ b/intro_flutter_gpu/step_07/linux/.gitignore
@@ -0,0 +1 @@
+flutter/ephemeral
diff --git a/intro_flutter_gpu/step_07/linux/CMakeLists.txt b/intro_flutter_gpu/step_07/linux/CMakeLists.txt
new file mode 100644
index 0000000000..a487a7465e
--- /dev/null
+++ b/intro_flutter_gpu/step_07/linux/CMakeLists.txt
@@ -0,0 +1,128 @@
+# Project-level configuration.
+cmake_minimum_required(VERSION 3.13)
+project(runner LANGUAGES CXX)
+
+# The name of the executable created for the application. Change this to change
+# the on-disk name of your application.
+set(BINARY_NAME "intro_flutter_gpu")
+# The unique GTK application identifier for this application. See:
+# https://wiki.gnome.org/HowDoI/ChooseApplicationID
+set(APPLICATION_ID "com.example.intro_flutter_gpu")
+
+# Explicitly opt in to modern CMake behaviors to avoid warnings with recent
+# versions of CMake.
+cmake_policy(SET CMP0063 NEW)
+
+# Load bundled libraries from the lib/ directory relative to the binary.
+set(CMAKE_INSTALL_RPATH "$ORIGIN/lib")
+
+# Root filesystem for cross-building.
+if(FLUTTER_TARGET_PLATFORM_SYSROOT)
+  set(CMAKE_SYSROOT ${FLUTTER_TARGET_PLATFORM_SYSROOT})
+  set(CMAKE_FIND_ROOT_PATH ${CMAKE_SYSROOT})
+  set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+  set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
+  set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+  set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+endif()
+
+# Define build configuration options.
+if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
+  set(CMAKE_BUILD_TYPE "Debug" CACHE
+    STRING "Flutter build mode" FORCE)
+  set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS
+    "Debug" "Profile" "Release")
+endif()
+
+# Compilation settings that should be applied to most targets.
+#
+# Be cautious about adding new options here, as plugins use this function by
+# default. In most cases, you should add new options to specific targets instead
+# of modifying this function.
+function(APPLY_STANDARD_SETTINGS TARGET)
+  target_compile_features(${TARGET} PUBLIC cxx_std_14)
+  target_compile_options(${TARGET} PRIVATE -Wall -Werror)
+  target_compile_options(${TARGET} PRIVATE "$<$<NOT:$<CONFIG:Debug>>:-O3>")
+  target_compile_definitions(${TARGET} PRIVATE "$<$<NOT:$<CONFIG:Debug>>:NDEBUG>")
+endfunction()
+
+# Flutter library and tool build rules.
+set(FLUTTER_MANAGED_DIR "${CMAKE_CURRENT_SOURCE_DIR}/flutter")
+add_subdirectory(${FLUTTER_MANAGED_DIR})
+
+# System-level dependencies.
+find_package(PkgConfig REQUIRED)
+pkg_check_modules(GTK REQUIRED IMPORTED_TARGET gtk+-3.0)
+
+# Application build; see runner/CMakeLists.txt.
+add_subdirectory("runner")
+
+# Run the Flutter tool portions of the build. This must not be removed.
+add_dependencies(${BINARY_NAME} flutter_assemble)
+
+# Only the install-generated bundle's copy of the executable will launch
+# correctly, since the resources must in the right relative locations. To avoid
+# people trying to run the unbundled copy, put it in a subdirectory instead of
+# the default top-level location.
+set_target_properties(${BINARY_NAME}
+  PROPERTIES
+  RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/intermediates_do_not_run"
+)
+
+
+# Generated plugin build rules, which manage building the plugins and adding
+# them to the application.
+include(flutter/generated_plugins.cmake)
+
+
+# === Installation ===
+# By default, "installing" just makes a relocatable bundle in the build
+# directory.
+set(BUILD_BUNDLE_DIR "${PROJECT_BINARY_DIR}/bundle")
+if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
+  set(CMAKE_INSTALL_PREFIX "${BUILD_BUNDLE_DIR}" CACHE PATH "..." FORCE)
+endif()
+
+# Start with a clean build bundle directory every time.
+install(CODE "
+  file(REMOVE_RECURSE \"${BUILD_BUNDLE_DIR}/\")
+  " COMPONENT Runtime)
+
+set(INSTALL_BUNDLE_DATA_DIR "${CMAKE_INSTALL_PREFIX}/data")
+set(INSTALL_BUNDLE_LIB_DIR "${CMAKE_INSTALL_PREFIX}/lib")
+
+install(TARGETS ${BINARY_NAME} RUNTIME DESTINATION "${CMAKE_INSTALL_PREFIX}"
+  COMPONENT Runtime)
+
+install(FILES "${FLUTTER_ICU_DATA_FILE}" DESTINATION "${INSTALL_BUNDLE_DATA_DIR}"
+  COMPONENT Runtime)
+
+install(FILES "${FLUTTER_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+  COMPONENT Runtime)
+
+foreach(bundled_library ${PLUGIN_BUNDLED_LIBRARIES})
+  install(FILES "${bundled_library}"
+    DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+    COMPONENT Runtime)
+endforeach(bundled_library)
+
+# Copy the native assets provided by the build.dart from all packages.
+set(NATIVE_ASSETS_DIR "${PROJECT_BUILD_DIR}native_assets/linux/")
+install(DIRECTORY "${NATIVE_ASSETS_DIR}"
+   DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+   COMPONENT Runtime)
+
+# Fully re-copy the assets directory on each build to avoid having stale files
+# from a previous install.
+set(FLUTTER_ASSET_DIR_NAME "flutter_assets")
+install(CODE "
+  file(REMOVE_RECURSE \"${INSTALL_BUNDLE_DATA_DIR}/${FLUTTER_ASSET_DIR_NAME}\")
+  " COMPONENT Runtime)
+install(DIRECTORY "${PROJECT_BUILD_DIR}/${FLUTTER_ASSET_DIR_NAME}"
+  DESTINATION "${INSTALL_BUNDLE_DATA_DIR}" COMPONENT Runtime)
+
+# Install the AOT library on non-Debug builds only.
+if(NOT CMAKE_BUILD_TYPE MATCHES "Debug")
+  install(FILES "${AOT_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+    COMPONENT Runtime)
+endif()
diff --git a/intro_flutter_gpu/step_07/linux/flutter/CMakeLists.txt b/intro_flutter_gpu/step_07/linux/flutter/CMakeLists.txt
new file mode 100644
index 0000000000..d5bd01648a
--- /dev/null
+++ b/intro_flutter_gpu/step_07/linux/flutter/CMakeLists.txt
@@ -0,0 +1,88 @@
+# This file controls Flutter-level build steps. It should not be edited.
+cmake_minimum_required(VERSION 3.10)
+
+set(EPHEMERAL_DIR "${CMAKE_CURRENT_SOURCE_DIR}/ephemeral")
+
+# Configuration provided via flutter tool.
+include(${EPHEMERAL_DIR}/generated_config.cmake)
+
+# TODO: Move the rest of this into files in ephemeral. See
+# https://github.com/flutter/flutter/issues/57146.
+
+# Serves the same purpose as list(TRANSFORM ... PREPEND ...),
+# which isn't available in 3.10.
+function(list_prepend LIST_NAME PREFIX)
+    set(NEW_LIST "")
+    foreach(element ${${LIST_NAME}})
+        list(APPEND NEW_LIST "${PREFIX}${element}")
+    endforeach(element)
+    set(${LIST_NAME} "${NEW_LIST}" PARENT_SCOPE)
+endfunction()
+
+# === Flutter Library ===
+# System-level dependencies.
+find_package(PkgConfig REQUIRED)
+pkg_check_modules(GTK REQUIRED IMPORTED_TARGET gtk+-3.0)
+pkg_check_modules(GLIB REQUIRED IMPORTED_TARGET glib-2.0)
+pkg_check_modules(GIO REQUIRED IMPORTED_TARGET gio-2.0)
+
+set(FLUTTER_LIBRARY "${EPHEMERAL_DIR}/libflutter_linux_gtk.so")
+
+# Published to parent scope for install step.
+set(FLUTTER_LIBRARY ${FLUTTER_LIBRARY} PARENT_SCOPE)
+set(FLUTTER_ICU_DATA_FILE "${EPHEMERAL_DIR}/icudtl.dat" PARENT_SCOPE)
+set(PROJECT_BUILD_DIR "${PROJECT_DIR}/build/" PARENT_SCOPE)
+set(AOT_LIBRARY "${PROJECT_DIR}/build/lib/libapp.so" PARENT_SCOPE)
+
+list(APPEND FLUTTER_LIBRARY_HEADERS
+  "fl_basic_message_channel.h"
+  "fl_binary_codec.h"
+  "fl_binary_messenger.h"
+  "fl_dart_project.h"
+  "fl_engine.h"
+  "fl_json_message_codec.h"
+  "fl_json_method_codec.h"
+  "fl_message_codec.h"
+  "fl_method_call.h"
+  "fl_method_channel.h"
+  "fl_method_codec.h"
+  "fl_method_response.h"
+  "fl_plugin_registrar.h"
+  "fl_plugin_registry.h"
+  "fl_standard_message_codec.h"
+  "fl_standard_method_codec.h"
+  "fl_string_codec.h"
+  "fl_value.h"
+  "fl_view.h"
+  "flutter_linux.h"
+)
+list_prepend(FLUTTER_LIBRARY_HEADERS "${EPHEMERAL_DIR}/flutter_linux/")
+add_library(flutter INTERFACE)
+target_include_directories(flutter INTERFACE
+  "${EPHEMERAL_DIR}"
+)
+target_link_libraries(flutter INTERFACE "${FLUTTER_LIBRARY}")
+target_link_libraries(flutter INTERFACE
+  PkgConfig::GTK
+  PkgConfig::GLIB
+  PkgConfig::GIO
+)
+add_dependencies(flutter flutter_assemble)
+
+# === Flutter tool backend ===
+# _phony_ is a non-existent file to force this command to run every time,
+# since currently there's no way to get a full input/output list from the
+# flutter tool.
+add_custom_command(
+  OUTPUT ${FLUTTER_LIBRARY} ${FLUTTER_LIBRARY_HEADERS}
+    ${CMAKE_CURRENT_BINARY_DIR}/_phony_
+  COMMAND ${CMAKE_COMMAND} -E env
+    ${FLUTTER_TOOL_ENVIRONMENT}
+    "${FLUTTER_ROOT}/packages/flutter_tools/bin/tool_backend.sh"
+      ${FLUTTER_TARGET_PLATFORM} ${CMAKE_BUILD_TYPE}
+  VERBATIM
+)
+add_custom_target(flutter_assemble DEPENDS
+  "${FLUTTER_LIBRARY}"
+  ${FLUTTER_LIBRARY_HEADERS}
+)
diff --git a/intro_flutter_gpu/step_07/linux/flutter/generated_plugin_registrant.cc b/intro_flutter_gpu/step_07/linux/flutter/generated_plugin_registrant.cc
new file mode 100644
index 0000000000..e71a16d23d
--- /dev/null
+++ b/intro_flutter_gpu/step_07/linux/flutter/generated_plugin_registrant.cc
@@ -0,0 +1,11 @@
+//
+//  Generated file. Do not edit.
+//
+
+// clang-format off
+
+#include "generated_plugin_registrant.h"
+
+
+void fl_register_plugins(FlPluginRegistry* registry) {
+}
diff --git a/intro_flutter_gpu/step_07/linux/flutter/generated_plugin_registrant.h b/intro_flutter_gpu/step_07/linux/flutter/generated_plugin_registrant.h
new file mode 100644
index 0000000000..e0f0a47bc0
--- /dev/null
+++ b/intro_flutter_gpu/step_07/linux/flutter/generated_plugin_registrant.h
@@ -0,0 +1,15 @@
+//
+//  Generated file. Do not edit.
+//
+
+// clang-format off
+
+#ifndef GENERATED_PLUGIN_REGISTRANT_
+#define GENERATED_PLUGIN_REGISTRANT_
+
+#include <flutter_linux/flutter_linux.h>
+
+// Registers Flutter plugins.
+void fl_register_plugins(FlPluginRegistry* registry);
+
+#endif  // GENERATED_PLUGIN_REGISTRANT_
diff --git a/intro_flutter_gpu/step_07/linux/flutter/generated_plugins.cmake b/intro_flutter_gpu/step_07/linux/flutter/generated_plugins.cmake
new file mode 100644
index 0000000000..2e1de87a7e
--- /dev/null
+++ b/intro_flutter_gpu/step_07/linux/flutter/generated_plugins.cmake
@@ -0,0 +1,23 @@
+#
+# Generated file, do not edit.
+#
+
+list(APPEND FLUTTER_PLUGIN_LIST
+)
+
+list(APPEND FLUTTER_FFI_PLUGIN_LIST
+)
+
+set(PLUGIN_BUNDLED_LIBRARIES)
+
+foreach(plugin ${FLUTTER_PLUGIN_LIST})
+  add_subdirectory(flutter/ephemeral/.plugin_symlinks/${plugin}/linux plugins/${plugin})
+  target_link_libraries(${BINARY_NAME} PRIVATE ${plugin}_plugin)
+  list(APPEND PLUGIN_BUNDLED_LIBRARIES $<TARGET_FILE:${plugin}_plugin>)
+  list(APPEND PLUGIN_BUNDLED_LIBRARIES ${${plugin}_bundled_libraries})
+endforeach(plugin)
+
+foreach(ffi_plugin ${FLUTTER_FFI_PLUGIN_LIST})
+  add_subdirectory(flutter/ephemeral/.plugin_symlinks/${ffi_plugin}/linux plugins/${ffi_plugin})
+  list(APPEND PLUGIN_BUNDLED_LIBRARIES ${${ffi_plugin}_bundled_libraries})
+endforeach(ffi_plugin)
diff --git a/intro_flutter_gpu/step_07/linux/runner/CMakeLists.txt b/intro_flutter_gpu/step_07/linux/runner/CMakeLists.txt
new file mode 100644
index 0000000000..e97dabc702
--- /dev/null
+++ b/intro_flutter_gpu/step_07/linux/runner/CMakeLists.txt
@@ -0,0 +1,26 @@
+cmake_minimum_required(VERSION 3.13)
+project(runner LANGUAGES CXX)
+
+# Define the application target. To change its name, change BINARY_NAME in the
+# top-level CMakeLists.txt, not the value here, or `flutter run` will no longer
+# work.
+#
+# Any new source files that you add to the application should be added here.
+add_executable(${BINARY_NAME}
+  "main.cc"
+  "my_application.cc"
+  "${FLUTTER_MANAGED_DIR}/generated_plugin_registrant.cc"
+)
+
+# Apply the standard set of build settings. This can be removed for applications
+# that need different build settings.
+apply_standard_settings(${BINARY_NAME})
+
+# Add preprocessor definitions for the application ID.
+add_definitions(-DAPPLICATION_ID="${APPLICATION_ID}")
+
+# Add dependency libraries. Add any application-specific dependencies here.
+target_link_libraries(${BINARY_NAME} PRIVATE flutter)
+target_link_libraries(${BINARY_NAME} PRIVATE PkgConfig::GTK)
+
+target_include_directories(${BINARY_NAME} PRIVATE "${CMAKE_SOURCE_DIR}")
diff --git a/intro_flutter_gpu/step_07/linux/runner/main.cc b/intro_flutter_gpu/step_07/linux/runner/main.cc
new file mode 100644
index 0000000000..e7c5c54370
--- /dev/null
+++ b/intro_flutter_gpu/step_07/linux/runner/main.cc
@@ -0,0 +1,6 @@
+#include "my_application.h"
+
+int main(int argc, char** argv) {
+  g_autoptr(MyApplication) app = my_application_new();
+  return g_application_run(G_APPLICATION(app), argc, argv);
+}
diff --git a/intro_flutter_gpu/step_07/linux/runner/my_application.cc b/intro_flutter_gpu/step_07/linux/runner/my_application.cc
new file mode 100644
index 0000000000..6c04c01067
--- /dev/null
+++ b/intro_flutter_gpu/step_07/linux/runner/my_application.cc
@@ -0,0 +1,130 @@
+#include "my_application.h"
+
+#include <flutter_linux/flutter_linux.h>
+#ifdef GDK_WINDOWING_X11
+#include <gdk/gdkx.h>
+#endif
+
+#include "flutter/generated_plugin_registrant.h"
+
+struct _MyApplication {
+  GtkApplication parent_instance;
+  char** dart_entrypoint_arguments;
+};
+
+G_DEFINE_TYPE(MyApplication, my_application, GTK_TYPE_APPLICATION)
+
+// Implements GApplication::activate.
+static void my_application_activate(GApplication* application) {
+  MyApplication* self = MY_APPLICATION(application);
+  GtkWindow* window =
+      GTK_WINDOW(gtk_application_window_new(GTK_APPLICATION(application)));
+
+  // Use a header bar when running in GNOME as this is the common style used
+  // by applications and is the setup most users will be using (e.g. Ubuntu
+  // desktop).
+  // If running on X and not using GNOME then just use a traditional title bar
+  // in case the window manager does more exotic layout, e.g. tiling.
+  // If running on Wayland assume the header bar will work (may need changing
+  // if future cases occur).
+  gboolean use_header_bar = TRUE;
+#ifdef GDK_WINDOWING_X11
+  GdkScreen* screen = gtk_window_get_screen(window);
+  if (GDK_IS_X11_SCREEN(screen)) {
+    const gchar* wm_name = gdk_x11_screen_get_window_manager_name(screen);
+    if (g_strcmp0(wm_name, "GNOME Shell") != 0) {
+      use_header_bar = FALSE;
+    }
+  }
+#endif
+  if (use_header_bar) {
+    GtkHeaderBar* header_bar = GTK_HEADER_BAR(gtk_header_bar_new());
+    gtk_widget_show(GTK_WIDGET(header_bar));
+    gtk_header_bar_set_title(header_bar, "intro_flutter_gpu");
+    gtk_header_bar_set_show_close_button(header_bar, TRUE);
+    gtk_window_set_titlebar(window, GTK_WIDGET(header_bar));
+  } else {
+    gtk_window_set_title(window, "intro_flutter_gpu");
+  }
+
+  gtk_window_set_default_size(window, 1280, 720);
+  gtk_widget_show(GTK_WIDGET(window));
+
+  g_autoptr(FlDartProject) project = fl_dart_project_new();
+  fl_dart_project_set_dart_entrypoint_arguments(project, self->dart_entrypoint_arguments);
+
+  FlView* view = fl_view_new(project);
+  gtk_widget_show(GTK_WIDGET(view));
+  gtk_container_add(GTK_CONTAINER(window), GTK_WIDGET(view));
+
+  fl_register_plugins(FL_PLUGIN_REGISTRY(view));
+
+  gtk_widget_grab_focus(GTK_WIDGET(view));
+}
+
+// Implements GApplication::local_command_line.
+static gboolean my_application_local_command_line(GApplication* application, gchar*** arguments, int* exit_status) {
+  MyApplication* self = MY_APPLICATION(application);
+  // Strip out the first argument as it is the binary name.
+  self->dart_entrypoint_arguments = g_strdupv(*arguments + 1);
+
+  g_autoptr(GError) error = nullptr;
+  if (!g_application_register(application, nullptr, &error)) {
+     g_warning("Failed to register: %s", error->message);
+     *exit_status = 1;
+     return TRUE;
+  }
+
+  g_application_activate(application);
+  *exit_status = 0;
+
+  return TRUE;
+}
+
+// Implements GApplication::startup.
+static void my_application_startup(GApplication* application) {
+  //MyApplication* self = MY_APPLICATION(object);
+
+  // Perform any actions required at application startup.
+
+  G_APPLICATION_CLASS(my_application_parent_class)->startup(application);
+}
+
+// Implements GApplication::shutdown.
+static void my_application_shutdown(GApplication* application) {
+  //MyApplication* self = MY_APPLICATION(object);
+
+  // Perform any actions required at application shutdown.
+
+  G_APPLICATION_CLASS(my_application_parent_class)->shutdown(application);
+}
+
+// Implements GObject::dispose.
+static void my_application_dispose(GObject* object) {
+  MyApplication* self = MY_APPLICATION(object);
+  g_clear_pointer(&self->dart_entrypoint_arguments, g_strfreev);
+  G_OBJECT_CLASS(my_application_parent_class)->dispose(object);
+}
+
+static void my_application_class_init(MyApplicationClass* klass) {
+  G_APPLICATION_CLASS(klass)->activate = my_application_activate;
+  G_APPLICATION_CLASS(klass)->local_command_line = my_application_local_command_line;
+  G_APPLICATION_CLASS(klass)->startup = my_application_startup;
+  G_APPLICATION_CLASS(klass)->shutdown = my_application_shutdown;
+  G_OBJECT_CLASS(klass)->dispose = my_application_dispose;
+}
+
+static void my_application_init(MyApplication* self) {}
+
+MyApplication* my_application_new() {
+  // Set the program name to the application ID, which helps various systems
+  // like GTK and desktop environments map this running application to its
+  // corresponding .desktop file. This ensures better integration by allowing
+  // the application to be recognized beyond its binary name.
+  g_set_prgname(APPLICATION_ID);
+
+  return MY_APPLICATION(g_object_new(my_application_get_type(),
+                                     "application-id", APPLICATION_ID,
+                                     "flags", G_APPLICATION_NON_UNIQUE,
+                                     nullptr));
+}
diff --git a/intro_flutter_gpu/step_07/linux/runner/my_application.h b/intro_flutter_gpu/step_07/linux/runner/my_application.h
new file mode 100644
index 0000000000..72271d5e41
--- /dev/null
+++ b/intro_flutter_gpu/step_07/linux/runner/my_application.h
@@ -0,0 +1,18 @@
+#ifndef FLUTTER_MY_APPLICATION_H_
+#define FLUTTER_MY_APPLICATION_H_
+
+#include <gtk/gtk.h>
+
+G_DECLARE_FINAL_TYPE(MyApplication, my_application, MY, APPLICATION,
+                     GtkApplication)
+
+/**
+ * my_application_new:
+ *
+ * Creates a new Flutter-based application.
+ *
+ * Returns: a new #MyApplication.
+ */
+MyApplication* my_application_new();
+
+#endif  // FLUTTER_MY_APPLICATION_H_
diff --git a/intro_flutter_gpu/step_07/macos/Runner/Configs/AppInfo.xcconfig b/intro_flutter_gpu/step_07/macos/Runner/Configs/AppInfo.xcconfig
index 87348d3f8a..e4fb8e9e62 100644
--- a/intro_flutter_gpu/step_07/macos/Runner/Configs/AppInfo.xcconfig
+++ b/intro_flutter_gpu/step_07/macos/Runner/Configs/AppInfo.xcconfig
@@ -11,4 +11,4 @@ PRODUCT_NAME = intro_flutter_gpu
 PRODUCT_BUNDLE_IDENTIFIER = com.example.introFlutterGpu
 
 // The copyright displayed in application information
-PRODUCT_COPYRIGHT = Copyright © 2024 com.example. All rights reserved.
+PRODUCT_COPYRIGHT = Copyright © 2025 com.example. All rights reserved.
diff --git a/intro_flutter_gpu/step_07/windows/runner/Runner.rc b/intro_flutter_gpu/step_07/windows/runner/Runner.rc
index a76c0ec0fc..26e1dbe547 100644
--- a/intro_flutter_gpu/step_07/windows/runner/Runner.rc
+++ b/intro_flutter_gpu/step_07/windows/runner/Runner.rc
@@ -93,7 +93,7 @@ BEGIN
             VALUE "FileDescription", "intro_flutter_gpu" "\0"
             VALUE "FileVersion", VERSION_AS_STRING "\0"
             VALUE "InternalName", "intro_flutter_gpu" "\0"
-            VALUE "LegalCopyright", "Copyright (C) 2024 com.example. All rights reserved." "\0"
+            VALUE "LegalCopyright", "Copyright (C) 2025 com.example. All rights reserved." "\0"
             VALUE "OriginalFilename", "intro_flutter_gpu.exe" "\0"
             VALUE "ProductName", "intro_flutter_gpu" "\0"
             VALUE "ProductVersion", VERSION_AS_STRING "\0"
diff --git a/intro_flutter_gpu/step_08/android/.gitignore b/intro_flutter_gpu/step_08/android/.gitignore
index 55afd919c6..be3943c96d 100644
--- a/intro_flutter_gpu/step_08/android/.gitignore
+++ b/intro_flutter_gpu/step_08/android/.gitignore
@@ -5,6 +5,7 @@ gradle-wrapper.jar
 /gradlew.bat
 /local.properties
 GeneratedPluginRegistrant.java
+.cxx/
 
 # Remember to never publicly share your keystore.
 # See https://flutter.dev/to/reference-keystore
diff --git a/intro_flutter_gpu/step_08/android/app/build.gradle.kts b/intro_flutter_gpu/step_08/android/app/build.gradle.kts
index 857326fb7b..ba03f47e22 100644
--- a/intro_flutter_gpu/step_08/android/app/build.gradle.kts
+++ b/intro_flutter_gpu/step_08/android/app/build.gradle.kts
@@ -11,12 +11,12 @@ android {
     ndkVersion = flutter.ndkVersion
 
     compileOptions {
-        sourceCompatibility = JavaVersion.VERSION_1_8
-        targetCompatibility = JavaVersion.VERSION_1_8
+        sourceCompatibility = JavaVersion.VERSION_11
+        targetCompatibility = JavaVersion.VERSION_11
     }
 
     kotlinOptions {
-        jvmTarget = JavaVersion.VERSION_1_8.toString()
+        jvmTarget = JavaVersion.VERSION_11.toString()
     }
 
     defaultConfig {
diff --git a/intro_flutter_gpu/step_08/android/app/src/main/kotlin/com/example/intro_flutter_gpu/MainActivity.kt b/intro_flutter_gpu/step_08/android/app/src/main/kotlin/com/example/intro_flutter_gpu/MainActivity.kt
index 28c6a72dea..309b877fe4 100644
--- a/intro_flutter_gpu/step_08/android/app/src/main/kotlin/com/example/intro_flutter_gpu/MainActivity.kt
+++ b/intro_flutter_gpu/step_08/android/app/src/main/kotlin/com/example/intro_flutter_gpu/MainActivity.kt
@@ -2,4 +2,4 @@ package com.example.intro_flutter_gpu
 
 import io.flutter.embedding.android.FlutterActivity
 
-class MainActivity: FlutterActivity()
+class MainActivity : FlutterActivity()
diff --git a/intro_flutter_gpu/step_08/linux/.gitignore b/intro_flutter_gpu/step_08/linux/.gitignore
new file mode 100644
index 0000000000..d3896c9844
--- /dev/null
+++ b/intro_flutter_gpu/step_08/linux/.gitignore
@@ -0,0 +1 @@
+flutter/ephemeral
diff --git a/intro_flutter_gpu/step_08/linux/CMakeLists.txt b/intro_flutter_gpu/step_08/linux/CMakeLists.txt
new file mode 100644
index 0000000000..a487a7465e
--- /dev/null
+++ b/intro_flutter_gpu/step_08/linux/CMakeLists.txt
@@ -0,0 +1,128 @@
+# Project-level configuration.
+cmake_minimum_required(VERSION 3.13)
+project(runner LANGUAGES CXX)
+
+# The name of the executable created for the application. Change this to change
+# the on-disk name of your application.
+set(BINARY_NAME "intro_flutter_gpu")
+# The unique GTK application identifier for this application. See:
+# https://wiki.gnome.org/HowDoI/ChooseApplicationID
+set(APPLICATION_ID "com.example.intro_flutter_gpu")
+
+# Explicitly opt in to modern CMake behaviors to avoid warnings with recent
+# versions of CMake.
+cmake_policy(SET CMP0063 NEW)
+
+# Load bundled libraries from the lib/ directory relative to the binary.
+set(CMAKE_INSTALL_RPATH "$ORIGIN/lib")
+
+# Root filesystem for cross-building.
+if(FLUTTER_TARGET_PLATFORM_SYSROOT)
+  set(CMAKE_SYSROOT ${FLUTTER_TARGET_PLATFORM_SYSROOT})
+  set(CMAKE_FIND_ROOT_PATH ${CMAKE_SYSROOT})
+  set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+  set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
+  set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+  set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+endif()
+
+# Define build configuration options.
+if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
+  set(CMAKE_BUILD_TYPE "Debug" CACHE
+    STRING "Flutter build mode" FORCE)
+  set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS
+    "Debug" "Profile" "Release")
+endif()
+
+# Compilation settings that should be applied to most targets.
+#
+# Be cautious about adding new options here, as plugins use this function by
+# default. In most cases, you should add new options to specific targets instead
+# of modifying this function.
+function(APPLY_STANDARD_SETTINGS TARGET)
+  target_compile_features(${TARGET} PUBLIC cxx_std_14)
+  target_compile_options(${TARGET} PRIVATE -Wall -Werror)
+  target_compile_options(${TARGET} PRIVATE "$<$<NOT:$<CONFIG:Debug>>:-O3>")
+  target_compile_definitions(${TARGET} PRIVATE "$<$<NOT:$<CONFIG:Debug>>:NDEBUG>")
+endfunction()
+
+# Flutter library and tool build rules.
+set(FLUTTER_MANAGED_DIR "${CMAKE_CURRENT_SOURCE_DIR}/flutter")
+add_subdirectory(${FLUTTER_MANAGED_DIR})
+
+# System-level dependencies.
+find_package(PkgConfig REQUIRED)
+pkg_check_modules(GTK REQUIRED IMPORTED_TARGET gtk+-3.0)
+
+# Application build; see runner/CMakeLists.txt.
+add_subdirectory("runner")
+
+# Run the Flutter tool portions of the build. This must not be removed.
+add_dependencies(${BINARY_NAME} flutter_assemble)
+
+# Only the install-generated bundle's copy of the executable will launch
+# correctly, since the resources must in the right relative locations. To avoid
+# people trying to run the unbundled copy, put it in a subdirectory instead of
+# the default top-level location.
+set_target_properties(${BINARY_NAME}
+  PROPERTIES
+  RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/intermediates_do_not_run"
+)
+
+
+# Generated plugin build rules, which manage building the plugins and adding
+# them to the application.
+include(flutter/generated_plugins.cmake)
+
+
+# === Installation ===
+# By default, "installing" just makes a relocatable bundle in the build
+# directory.
+set(BUILD_BUNDLE_DIR "${PROJECT_BINARY_DIR}/bundle")
+if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
+  set(CMAKE_INSTALL_PREFIX "${BUILD_BUNDLE_DIR}" CACHE PATH "..." FORCE)
+endif()
+
+# Start with a clean build bundle directory every time.
+install(CODE "
+  file(REMOVE_RECURSE \"${BUILD_BUNDLE_DIR}/\")
+  " COMPONENT Runtime)
+
+set(INSTALL_BUNDLE_DATA_DIR "${CMAKE_INSTALL_PREFIX}/data")
+set(INSTALL_BUNDLE_LIB_DIR "${CMAKE_INSTALL_PREFIX}/lib")
+
+install(TARGETS ${BINARY_NAME} RUNTIME DESTINATION "${CMAKE_INSTALL_PREFIX}"
+  COMPONENT Runtime)
+
+install(FILES "${FLUTTER_ICU_DATA_FILE}" DESTINATION "${INSTALL_BUNDLE_DATA_DIR}"
+  COMPONENT Runtime)
+
+install(FILES "${FLUTTER_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+  COMPONENT Runtime)
+
+foreach(bundled_library ${PLUGIN_BUNDLED_LIBRARIES})
+  install(FILES "${bundled_library}"
+    DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+    COMPONENT Runtime)
+endforeach(bundled_library)
+
+# Copy the native assets provided by the build.dart from all packages.
+set(NATIVE_ASSETS_DIR "${PROJECT_BUILD_DIR}native_assets/linux/")
+install(DIRECTORY "${NATIVE_ASSETS_DIR}"
+   DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+   COMPONENT Runtime)
+
+# Fully re-copy the assets directory on each build to avoid having stale files
+# from a previous install.
+set(FLUTTER_ASSET_DIR_NAME "flutter_assets")
+install(CODE "
+  file(REMOVE_RECURSE \"${INSTALL_BUNDLE_DATA_DIR}/${FLUTTER_ASSET_DIR_NAME}\")
+  " COMPONENT Runtime)
+install(DIRECTORY "${PROJECT_BUILD_DIR}/${FLUTTER_ASSET_DIR_NAME}"
+  DESTINATION "${INSTALL_BUNDLE_DATA_DIR}" COMPONENT Runtime)
+
+# Install the AOT library on non-Debug builds only.
+if(NOT CMAKE_BUILD_TYPE MATCHES "Debug")
+  install(FILES "${AOT_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+    COMPONENT Runtime)
+endif()
diff --git a/intro_flutter_gpu/step_08/linux/flutter/CMakeLists.txt b/intro_flutter_gpu/step_08/linux/flutter/CMakeLists.txt
new file mode 100644
index 0000000000..d5bd01648a
--- /dev/null
+++ b/intro_flutter_gpu/step_08/linux/flutter/CMakeLists.txt
@@ -0,0 +1,88 @@
+# This file controls Flutter-level build steps. It should not be edited.
+cmake_minimum_required(VERSION 3.10)
+
+set(EPHEMERAL_DIR "${CMAKE_CURRENT_SOURCE_DIR}/ephemeral")
+
+# Configuration provided via flutter tool.
+include(${EPHEMERAL_DIR}/generated_config.cmake)
+
+# TODO: Move the rest of this into files in ephemeral. See
+# https://github.com/flutter/flutter/issues/57146.
+
+# Serves the same purpose as list(TRANSFORM ... PREPEND ...),
+# which isn't available in 3.10.
+function(list_prepend LIST_NAME PREFIX)
+    set(NEW_LIST "")
+    foreach(element ${${LIST_NAME}})
+        list(APPEND NEW_LIST "${PREFIX}${element}")
+    endforeach(element)
+    set(${LIST_NAME} "${NEW_LIST}" PARENT_SCOPE)
+endfunction()
+
+# === Flutter Library ===
+# System-level dependencies.
+find_package(PkgConfig REQUIRED)
+pkg_check_modules(GTK REQUIRED IMPORTED_TARGET gtk+-3.0)
+pkg_check_modules(GLIB REQUIRED IMPORTED_TARGET glib-2.0)
+pkg_check_modules(GIO REQUIRED IMPORTED_TARGET gio-2.0)
+
+set(FLUTTER_LIBRARY "${EPHEMERAL_DIR}/libflutter_linux_gtk.so")
+
+# Published to parent scope for install step.
+set(FLUTTER_LIBRARY ${FLUTTER_LIBRARY} PARENT_SCOPE)
+set(FLUTTER_ICU_DATA_FILE "${EPHEMERAL_DIR}/icudtl.dat" PARENT_SCOPE)
+set(PROJECT_BUILD_DIR "${PROJECT_DIR}/build/" PARENT_SCOPE)
+set(AOT_LIBRARY "${PROJECT_DIR}/build/lib/libapp.so" PARENT_SCOPE)
+
+list(APPEND FLUTTER_LIBRARY_HEADERS
+  "fl_basic_message_channel.h"
+  "fl_binary_codec.h"
+  "fl_binary_messenger.h"
+  "fl_dart_project.h"
+  "fl_engine.h"
+  "fl_json_message_codec.h"
+  "fl_json_method_codec.h"
+  "fl_message_codec.h"
+  "fl_method_call.h"
+  "fl_method_channel.h"
+  "fl_method_codec.h"
+  "fl_method_response.h"
+  "fl_plugin_registrar.h"
+  "fl_plugin_registry.h"
+  "fl_standard_message_codec.h"
+  "fl_standard_method_codec.h"
+  "fl_string_codec.h"
+  "fl_value.h"
+  "fl_view.h"
+  "flutter_linux.h"
+)
+list_prepend(FLUTTER_LIBRARY_HEADERS "${EPHEMERAL_DIR}/flutter_linux/")
+add_library(flutter INTERFACE)
+target_include_directories(flutter INTERFACE
+  "${EPHEMERAL_DIR}"
+)
+target_link_libraries(flutter INTERFACE "${FLUTTER_LIBRARY}")
+target_link_libraries(flutter INTERFACE
+  PkgConfig::GTK
+  PkgConfig::GLIB
+  PkgConfig::GIO
+)
+add_dependencies(flutter flutter_assemble)
+
+# === Flutter tool backend ===
+# _phony_ is a non-existent file to force this command to run every time,
+# since currently there's no way to get a full input/output list from the
+# flutter tool.
+add_custom_command(
+  OUTPUT ${FLUTTER_LIBRARY} ${FLUTTER_LIBRARY_HEADERS}
+    ${CMAKE_CURRENT_BINARY_DIR}/_phony_
+  COMMAND ${CMAKE_COMMAND} -E env
+    ${FLUTTER_TOOL_ENVIRONMENT}
+    "${FLUTTER_ROOT}/packages/flutter_tools/bin/tool_backend.sh"
+      ${FLUTTER_TARGET_PLATFORM} ${CMAKE_BUILD_TYPE}
+  VERBATIM
+)
+add_custom_target(flutter_assemble DEPENDS
+  "${FLUTTER_LIBRARY}"
+  ${FLUTTER_LIBRARY_HEADERS}
+)
diff --git a/intro_flutter_gpu/step_08/linux/flutter/generated_plugin_registrant.cc b/intro_flutter_gpu/step_08/linux/flutter/generated_plugin_registrant.cc
new file mode 100644
index 0000000000..e71a16d23d
--- /dev/null
+++ b/intro_flutter_gpu/step_08/linux/flutter/generated_plugin_registrant.cc
@@ -0,0 +1,11 @@
+//
+//  Generated file. Do not edit.
+//
+
+// clang-format off
+
+#include "generated_plugin_registrant.h"
+
+
+void fl_register_plugins(FlPluginRegistry* registry) {
+}
diff --git a/intro_flutter_gpu/step_08/linux/flutter/generated_plugin_registrant.h b/intro_flutter_gpu/step_08/linux/flutter/generated_plugin_registrant.h
new file mode 100644
index 0000000000..e0f0a47bc0
--- /dev/null
+++ b/intro_flutter_gpu/step_08/linux/flutter/generated_plugin_registrant.h
@@ -0,0 +1,15 @@
+//
+//  Generated file. Do not edit.
+//
+
+// clang-format off
+
+#ifndef GENERATED_PLUGIN_REGISTRANT_
+#define GENERATED_PLUGIN_REGISTRANT_
+
+#include <flutter_linux/flutter_linux.h>
+
+// Registers Flutter plugins.
+void fl_register_plugins(FlPluginRegistry* registry);
+
+#endif  // GENERATED_PLUGIN_REGISTRANT_
diff --git a/intro_flutter_gpu/step_08/linux/flutter/generated_plugins.cmake b/intro_flutter_gpu/step_08/linux/flutter/generated_plugins.cmake
new file mode 100644
index 0000000000..2e1de87a7e
--- /dev/null
+++ b/intro_flutter_gpu/step_08/linux/flutter/generated_plugins.cmake
@@ -0,0 +1,23 @@
+#
+# Generated file, do not edit.
+#
+
+list(APPEND FLUTTER_PLUGIN_LIST
+)
+
+list(APPEND FLUTTER_FFI_PLUGIN_LIST
+)
+
+set(PLUGIN_BUNDLED_LIBRARIES)
+
+foreach(plugin ${FLUTTER_PLUGIN_LIST})
+  add_subdirectory(flutter/ephemeral/.plugin_symlinks/${plugin}/linux plugins/${plugin})
+  target_link_libraries(${BINARY_NAME} PRIVATE ${plugin}_plugin)
+  list(APPEND PLUGIN_BUNDLED_LIBRARIES $<TARGET_FILE:${plugin}_plugin>)
+  list(APPEND PLUGIN_BUNDLED_LIBRARIES ${${plugin}_bundled_libraries})
+endforeach(plugin)
+
+foreach(ffi_plugin ${FLUTTER_FFI_PLUGIN_LIST})
+  add_subdirectory(flutter/ephemeral/.plugin_symlinks/${ffi_plugin}/linux plugins/${ffi_plugin})
+  list(APPEND PLUGIN_BUNDLED_LIBRARIES ${${ffi_plugin}_bundled_libraries})
+endforeach(ffi_plugin)
diff --git a/intro_flutter_gpu/step_08/linux/runner/CMakeLists.txt b/intro_flutter_gpu/step_08/linux/runner/CMakeLists.txt
new file mode 100644
index 0000000000..e97dabc702
--- /dev/null
+++ b/intro_flutter_gpu/step_08/linux/runner/CMakeLists.txt
@@ -0,0 +1,26 @@
+cmake_minimum_required(VERSION 3.13)
+project(runner LANGUAGES CXX)
+
+# Define the application target. To change its name, change BINARY_NAME in the
+# top-level CMakeLists.txt, not the value here, or `flutter run` will no longer
+# work.
+#
+# Any new source files that you add to the application should be added here.
+add_executable(${BINARY_NAME}
+  "main.cc"
+  "my_application.cc"
+  "${FLUTTER_MANAGED_DIR}/generated_plugin_registrant.cc"
+)
+
+# Apply the standard set of build settings. This can be removed for applications
+# that need different build settings.
+apply_standard_settings(${BINARY_NAME})
+
+# Add preprocessor definitions for the application ID.
+add_definitions(-DAPPLICATION_ID="${APPLICATION_ID}")
+
+# Add dependency libraries. Add any application-specific dependencies here.
+target_link_libraries(${BINARY_NAME} PRIVATE flutter)
+target_link_libraries(${BINARY_NAME} PRIVATE PkgConfig::GTK)
+
+target_include_directories(${BINARY_NAME} PRIVATE "${CMAKE_SOURCE_DIR}")
diff --git a/intro_flutter_gpu/step_08/linux/runner/main.cc b/intro_flutter_gpu/step_08/linux/runner/main.cc
new file mode 100644
index 0000000000..e7c5c54370
--- /dev/null
+++ b/intro_flutter_gpu/step_08/linux/runner/main.cc
@@ -0,0 +1,6 @@
+#include "my_application.h"
+
+int main(int argc, char** argv) {
+  g_autoptr(MyApplication) app = my_application_new();
+  return g_application_run(G_APPLICATION(app), argc, argv);
+}
diff --git a/intro_flutter_gpu/step_08/linux/runner/my_application.cc b/intro_flutter_gpu/step_08/linux/runner/my_application.cc
new file mode 100644
index 0000000000..6c04c01067
--- /dev/null
+++ b/intro_flutter_gpu/step_08/linux/runner/my_application.cc
@@ -0,0 +1,130 @@
+#include "my_application.h"
+
+#include <flutter_linux/flutter_linux.h>
+#ifdef GDK_WINDOWING_X11
+#include <gdk/gdkx.h>
+#endif
+
+#include "flutter/generated_plugin_registrant.h"
+
+struct _MyApplication {
+  GtkApplication parent_instance;
+  char** dart_entrypoint_arguments;
+};
+
+G_DEFINE_TYPE(MyApplication, my_application, GTK_TYPE_APPLICATION)
+
+// Implements GApplication::activate.
+static void my_application_activate(GApplication* application) {
+  MyApplication* self = MY_APPLICATION(application);
+  GtkWindow* window =
+      GTK_WINDOW(gtk_application_window_new(GTK_APPLICATION(application)));
+
+  // Use a header bar when running in GNOME as this is the common style used
+  // by applications and is the setup most users will be using (e.g. Ubuntu
+  // desktop).
+  // If running on X and not using GNOME then just use a traditional title bar
+  // in case the window manager does more exotic layout, e.g. tiling.
+  // If running on Wayland assume the header bar will work (may need changing
+  // if future cases occur).
+  gboolean use_header_bar = TRUE;
+#ifdef GDK_WINDOWING_X11
+  GdkScreen* screen = gtk_window_get_screen(window);
+  if (GDK_IS_X11_SCREEN(screen)) {
+    const gchar* wm_name = gdk_x11_screen_get_window_manager_name(screen);
+    if (g_strcmp0(wm_name, "GNOME Shell") != 0) {
+      use_header_bar = FALSE;
+    }
+  }
+#endif
+  if (use_header_bar) {
+    GtkHeaderBar* header_bar = GTK_HEADER_BAR(gtk_header_bar_new());
+    gtk_widget_show(GTK_WIDGET(header_bar));
+    gtk_header_bar_set_title(header_bar, "intro_flutter_gpu");
+    gtk_header_bar_set_show_close_button(header_bar, TRUE);
+    gtk_window_set_titlebar(window, GTK_WIDGET(header_bar));
+  } else {
+    gtk_window_set_title(window, "intro_flutter_gpu");
+  }
+
+  gtk_window_set_default_size(window, 1280, 720);
+  gtk_widget_show(GTK_WIDGET(window));
+
+  g_autoptr(FlDartProject) project = fl_dart_project_new();
+  fl_dart_project_set_dart_entrypoint_arguments(project, self->dart_entrypoint_arguments);
+
+  FlView* view = fl_view_new(project);
+  gtk_widget_show(GTK_WIDGET(view));
+  gtk_container_add(GTK_CONTAINER(window), GTK_WIDGET(view));
+
+  fl_register_plugins(FL_PLUGIN_REGISTRY(view));
+
+  gtk_widget_grab_focus(GTK_WIDGET(view));
+}
+
+// Implements GApplication::local_command_line.
+static gboolean my_application_local_command_line(GApplication* application, gchar*** arguments, int* exit_status) {
+  MyApplication* self = MY_APPLICATION(application);
+  // Strip out the first argument as it is the binary name.
+  self->dart_entrypoint_arguments = g_strdupv(*arguments + 1);
+
+  g_autoptr(GError) error = nullptr;
+  if (!g_application_register(application, nullptr, &error)) {
+     g_warning("Failed to register: %s", error->message);
+     *exit_status = 1;
+     return TRUE;
+  }
+
+  g_application_activate(application);
+  *exit_status = 0;
+
+  return TRUE;
+}
+
+// Implements GApplication::startup.
+static void my_application_startup(GApplication* application) {
+  //MyApplication* self = MY_APPLICATION(object);
+
+  // Perform any actions required at application startup.
+
+  G_APPLICATION_CLASS(my_application_parent_class)->startup(application);
+}
+
+// Implements GApplication::shutdown.
+static void my_application_shutdown(GApplication* application) {
+  //MyApplication* self = MY_APPLICATION(object);
+
+  // Perform any actions required at application shutdown.
+
+  G_APPLICATION_CLASS(my_application_parent_class)->shutdown(application);
+}
+
+// Implements GObject::dispose.
+static void my_application_dispose(GObject* object) {
+  MyApplication* self = MY_APPLICATION(object);
+  g_clear_pointer(&self->dart_entrypoint_arguments, g_strfreev);
+  G_OBJECT_CLASS(my_application_parent_class)->dispose(object);
+}
+
+static void my_application_class_init(MyApplicationClass* klass) {
+  G_APPLICATION_CLASS(klass)->activate = my_application_activate;
+  G_APPLICATION_CLASS(klass)->local_command_line = my_application_local_command_line;
+  G_APPLICATION_CLASS(klass)->startup = my_application_startup;
+  G_APPLICATION_CLASS(klass)->shutdown = my_application_shutdown;
+  G_OBJECT_CLASS(klass)->dispose = my_application_dispose;
+}
+
+static void my_application_init(MyApplication* self) {}
+
+MyApplication* my_application_new() {
+  // Set the program name to the application ID, which helps various systems
+  // like GTK and desktop environments map this running application to its
+  // corresponding .desktop file. This ensures better integration by allowing
+  // the application to be recognized beyond its binary name.
+  g_set_prgname(APPLICATION_ID);
+
+  return MY_APPLICATION(g_object_new(my_application_get_type(),
+                                     "application-id", APPLICATION_ID,
+                                     "flags", G_APPLICATION_NON_UNIQUE,
+                                     nullptr));
+}
diff --git a/intro_flutter_gpu/step_08/linux/runner/my_application.h b/intro_flutter_gpu/step_08/linux/runner/my_application.h
new file mode 100644
index 0000000000..72271d5e41
--- /dev/null
+++ b/intro_flutter_gpu/step_08/linux/runner/my_application.h
@@ -0,0 +1,18 @@
+#ifndef FLUTTER_MY_APPLICATION_H_
+#define FLUTTER_MY_APPLICATION_H_
+
+#include <gtk/gtk.h>
+
+G_DECLARE_FINAL_TYPE(MyApplication, my_application, MY, APPLICATION,
+                     GtkApplication)
+
+/**
+ * my_application_new:
+ *
+ * Creates a new Flutter-based application.
+ *
+ * Returns: a new #MyApplication.
+ */
+MyApplication* my_application_new();
+
+#endif  // FLUTTER_MY_APPLICATION_H_
diff --git a/intro_flutter_gpu/step_08/macos/Runner/Configs/AppInfo.xcconfig b/intro_flutter_gpu/step_08/macos/Runner/Configs/AppInfo.xcconfig
index 87348d3f8a..e4fb8e9e62 100644
--- a/intro_flutter_gpu/step_08/macos/Runner/Configs/AppInfo.xcconfig
+++ b/intro_flutter_gpu/step_08/macos/Runner/Configs/AppInfo.xcconfig
@@ -11,4 +11,4 @@ PRODUCT_NAME = intro_flutter_gpu
 PRODUCT_BUNDLE_IDENTIFIER = com.example.introFlutterGpu
 
 // The copyright displayed in application information
-PRODUCT_COPYRIGHT = Copyright © 2024 com.example. All rights reserved.
+PRODUCT_COPYRIGHT = Copyright © 2025 com.example. All rights reserved.
diff --git a/intro_flutter_gpu/step_08/windows/runner/Runner.rc b/intro_flutter_gpu/step_08/windows/runner/Runner.rc
index a76c0ec0fc..26e1dbe547 100644
--- a/intro_flutter_gpu/step_08/windows/runner/Runner.rc
+++ b/intro_flutter_gpu/step_08/windows/runner/Runner.rc
@@ -93,7 +93,7 @@ BEGIN
             VALUE "FileDescription", "intro_flutter_gpu" "\0"
             VALUE "FileVersion", VERSION_AS_STRING "\0"
             VALUE "InternalName", "intro_flutter_gpu" "\0"
-            VALUE "LegalCopyright", "Copyright (C) 2024 com.example. All rights reserved." "\0"
+            VALUE "LegalCopyright", "Copyright (C) 2025 com.example. All rights reserved." "\0"
             VALUE "OriginalFilename", "intro_flutter_gpu.exe" "\0"
             VALUE "ProductName", "intro_flutter_gpu" "\0"
             VALUE "ProductVersion", VERSION_AS_STRING "\0"
diff --git a/intro_flutter_gpu/step_09/android/.gitignore b/intro_flutter_gpu/step_09/android/.gitignore
index 55afd919c6..be3943c96d 100644
--- a/intro_flutter_gpu/step_09/android/.gitignore
+++ b/intro_flutter_gpu/step_09/android/.gitignore
@@ -5,6 +5,7 @@ gradle-wrapper.jar
 /gradlew.bat
 /local.properties
 GeneratedPluginRegistrant.java
+.cxx/
 
 # Remember to never publicly share your keystore.
 # See https://flutter.dev/to/reference-keystore
diff --git a/intro_flutter_gpu/step_09/android/app/build.gradle.kts b/intro_flutter_gpu/step_09/android/app/build.gradle.kts
index 857326fb7b..ba03f47e22 100644
--- a/intro_flutter_gpu/step_09/android/app/build.gradle.kts
+++ b/intro_flutter_gpu/step_09/android/app/build.gradle.kts
@@ -11,12 +11,12 @@ android {
     ndkVersion = flutter.ndkVersion
 
     compileOptions {
-        sourceCompatibility = JavaVersion.VERSION_1_8
-        targetCompatibility = JavaVersion.VERSION_1_8
+        sourceCompatibility = JavaVersion.VERSION_11
+        targetCompatibility = JavaVersion.VERSION_11
     }
 
     kotlinOptions {
-        jvmTarget = JavaVersion.VERSION_1_8.toString()
+        jvmTarget = JavaVersion.VERSION_11.toString()
     }
 
     defaultConfig {
diff --git a/intro_flutter_gpu/step_09/android/app/src/main/kotlin/com/example/intro_flutter_gpu/MainActivity.kt b/intro_flutter_gpu/step_09/android/app/src/main/kotlin/com/example/intro_flutter_gpu/MainActivity.kt
index 28c6a72dea..309b877fe4 100644
--- a/intro_flutter_gpu/step_09/android/app/src/main/kotlin/com/example/intro_flutter_gpu/MainActivity.kt
+++ b/intro_flutter_gpu/step_09/android/app/src/main/kotlin/com/example/intro_flutter_gpu/MainActivity.kt
@@ -2,4 +2,4 @@ package com.example.intro_flutter_gpu
 
 import io.flutter.embedding.android.FlutterActivity
 
-class MainActivity: FlutterActivity()
+class MainActivity : FlutterActivity()
diff --git a/intro_flutter_gpu/step_09/linux/.gitignore b/intro_flutter_gpu/step_09/linux/.gitignore
new file mode 100644
index 0000000000..d3896c9844
--- /dev/null
+++ b/intro_flutter_gpu/step_09/linux/.gitignore
@@ -0,0 +1 @@
+flutter/ephemeral
diff --git a/intro_flutter_gpu/step_09/linux/CMakeLists.txt b/intro_flutter_gpu/step_09/linux/CMakeLists.txt
new file mode 100644
index 0000000000..a487a7465e
--- /dev/null
+++ b/intro_flutter_gpu/step_09/linux/CMakeLists.txt
@@ -0,0 +1,128 @@
+# Project-level configuration.
+cmake_minimum_required(VERSION 3.13)
+project(runner LANGUAGES CXX)
+
+# The name of the executable created for the application. Change this to change
+# the on-disk name of your application.
+set(BINARY_NAME "intro_flutter_gpu")
+# The unique GTK application identifier for this application. See:
+# https://wiki.gnome.org/HowDoI/ChooseApplicationID
+set(APPLICATION_ID "com.example.intro_flutter_gpu")
+
+# Explicitly opt in to modern CMake behaviors to avoid warnings with recent
+# versions of CMake.
+cmake_policy(SET CMP0063 NEW)
+
+# Load bundled libraries from the lib/ directory relative to the binary.
+set(CMAKE_INSTALL_RPATH "$ORIGIN/lib")
+
+# Root filesystem for cross-building.
+if(FLUTTER_TARGET_PLATFORM_SYSROOT)
+  set(CMAKE_SYSROOT ${FLUTTER_TARGET_PLATFORM_SYSROOT})
+  set(CMAKE_FIND_ROOT_PATH ${CMAKE_SYSROOT})
+  set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+  set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
+  set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+  set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+endif()
+
+# Define build configuration options.
+if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
+  set(CMAKE_BUILD_TYPE "Debug" CACHE
+    STRING "Flutter build mode" FORCE)
+  set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS
+    "Debug" "Profile" "Release")
+endif()
+
+# Compilation settings that should be applied to most targets.
+#
+# Be cautious about adding new options here, as plugins use this function by
+# default. In most cases, you should add new options to specific targets instead
+# of modifying this function.
+function(APPLY_STANDARD_SETTINGS TARGET)
+  target_compile_features(${TARGET} PUBLIC cxx_std_14)
+  target_compile_options(${TARGET} PRIVATE -Wall -Werror)
+  target_compile_options(${TARGET} PRIVATE "$<$<NOT:$<CONFIG:Debug>>:-O3>")
+  target_compile_definitions(${TARGET} PRIVATE "$<$<NOT:$<CONFIG:Debug>>:NDEBUG>")
+endfunction()
+
+# Flutter library and tool build rules.
+set(FLUTTER_MANAGED_DIR "${CMAKE_CURRENT_SOURCE_DIR}/flutter")
+add_subdirectory(${FLUTTER_MANAGED_DIR})
+
+# System-level dependencies.
+find_package(PkgConfig REQUIRED)
+pkg_check_modules(GTK REQUIRED IMPORTED_TARGET gtk+-3.0)
+
+# Application build; see runner/CMakeLists.txt.
+add_subdirectory("runner")
+
+# Run the Flutter tool portions of the build. This must not be removed.
+add_dependencies(${BINARY_NAME} flutter_assemble)
+
+# Only the install-generated bundle's copy of the executable will launch
+# correctly, since the resources must in the right relative locations. To avoid
+# people trying to run the unbundled copy, put it in a subdirectory instead of
+# the default top-level location.
+set_target_properties(${BINARY_NAME}
+  PROPERTIES
+  RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/intermediates_do_not_run"
+)
+
+
+# Generated plugin build rules, which manage building the plugins and adding
+# them to the application.
+include(flutter/generated_plugins.cmake)
+
+
+# === Installation ===
+# By default, "installing" just makes a relocatable bundle in the build
+# directory.
+set(BUILD_BUNDLE_DIR "${PROJECT_BINARY_DIR}/bundle")
+if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
+  set(CMAKE_INSTALL_PREFIX "${BUILD_BUNDLE_DIR}" CACHE PATH "..." FORCE)
+endif()
+
+# Start with a clean build bundle directory every time.
+install(CODE "
+  file(REMOVE_RECURSE \"${BUILD_BUNDLE_DIR}/\")
+  " COMPONENT Runtime)
+
+set(INSTALL_BUNDLE_DATA_DIR "${CMAKE_INSTALL_PREFIX}/data")
+set(INSTALL_BUNDLE_LIB_DIR "${CMAKE_INSTALL_PREFIX}/lib")
+
+install(TARGETS ${BINARY_NAME} RUNTIME DESTINATION "${CMAKE_INSTALL_PREFIX}"
+  COMPONENT Runtime)
+
+install(FILES "${FLUTTER_ICU_DATA_FILE}" DESTINATION "${INSTALL_BUNDLE_DATA_DIR}"
+  COMPONENT Runtime)
+
+install(FILES "${FLUTTER_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+  COMPONENT Runtime)
+
+foreach(bundled_library ${PLUGIN_BUNDLED_LIBRARIES})
+  install(FILES "${bundled_library}"
+    DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+    COMPONENT Runtime)
+endforeach(bundled_library)
+
+# Copy the native assets provided by the build.dart from all packages.
+set(NATIVE_ASSETS_DIR "${PROJECT_BUILD_DIR}native_assets/linux/")
+install(DIRECTORY "${NATIVE_ASSETS_DIR}"
+   DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+   COMPONENT Runtime)
+
+# Fully re-copy the assets directory on each build to avoid having stale files
+# from a previous install.
+set(FLUTTER_ASSET_DIR_NAME "flutter_assets")
+install(CODE "
+  file(REMOVE_RECURSE \"${INSTALL_BUNDLE_DATA_DIR}/${FLUTTER_ASSET_DIR_NAME}\")
+  " COMPONENT Runtime)
+install(DIRECTORY "${PROJECT_BUILD_DIR}/${FLUTTER_ASSET_DIR_NAME}"
+  DESTINATION "${INSTALL_BUNDLE_DATA_DIR}" COMPONENT Runtime)
+
+# Install the AOT library on non-Debug builds only.
+if(NOT CMAKE_BUILD_TYPE MATCHES "Debug")
+  install(FILES "${AOT_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+    COMPONENT Runtime)
+endif()
diff --git a/intro_flutter_gpu/step_09/linux/flutter/CMakeLists.txt b/intro_flutter_gpu/step_09/linux/flutter/CMakeLists.txt
new file mode 100644
index 0000000000..d5bd01648a
--- /dev/null
+++ b/intro_flutter_gpu/step_09/linux/flutter/CMakeLists.txt
@@ -0,0 +1,88 @@
+# This file controls Flutter-level build steps. It should not be edited.
+cmake_minimum_required(VERSION 3.10)
+
+set(EPHEMERAL_DIR "${CMAKE_CURRENT_SOURCE_DIR}/ephemeral")
+
+# Configuration provided via flutter tool.
+include(${EPHEMERAL_DIR}/generated_config.cmake)
+
+# TODO: Move the rest of this into files in ephemeral. See
+# https://github.com/flutter/flutter/issues/57146.
+
+# Serves the same purpose as list(TRANSFORM ... PREPEND ...),
+# which isn't available in 3.10.
+function(list_prepend LIST_NAME PREFIX)
+    set(NEW_LIST "")
+    foreach(element ${${LIST_NAME}})
+        list(APPEND NEW_LIST "${PREFIX}${element}")
+    endforeach(element)
+    set(${LIST_NAME} "${NEW_LIST}" PARENT_SCOPE)
+endfunction()
+
+# === Flutter Library ===
+# System-level dependencies.
+find_package(PkgConfig REQUIRED)
+pkg_check_modules(GTK REQUIRED IMPORTED_TARGET gtk+-3.0)
+pkg_check_modules(GLIB REQUIRED IMPORTED_TARGET glib-2.0)
+pkg_check_modules(GIO REQUIRED IMPORTED_TARGET gio-2.0)
+
+set(FLUTTER_LIBRARY "${EPHEMERAL_DIR}/libflutter_linux_gtk.so")
+
+# Published to parent scope for install step.
+set(FLUTTER_LIBRARY ${FLUTTER_LIBRARY} PARENT_SCOPE)
+set(FLUTTER_ICU_DATA_FILE "${EPHEMERAL_DIR}/icudtl.dat" PARENT_SCOPE)
+set(PROJECT_BUILD_DIR "${PROJECT_DIR}/build/" PARENT_SCOPE)
+set(AOT_LIBRARY "${PROJECT_DIR}/build/lib/libapp.so" PARENT_SCOPE)
+
+list(APPEND FLUTTER_LIBRARY_HEADERS
+  "fl_basic_message_channel.h"
+  "fl_binary_codec.h"
+  "fl_binary_messenger.h"
+  "fl_dart_project.h"
+  "fl_engine.h"
+  "fl_json_message_codec.h"
+  "fl_json_method_codec.h"
+  "fl_message_codec.h"
+  "fl_method_call.h"
+  "fl_method_channel.h"
+  "fl_method_codec.h"
+  "fl_method_response.h"
+  "fl_plugin_registrar.h"
+  "fl_plugin_registry.h"
+  "fl_standard_message_codec.h"
+  "fl_standard_method_codec.h"
+  "fl_string_codec.h"
+  "fl_value.h"
+  "fl_view.h"
+  "flutter_linux.h"
+)
+list_prepend(FLUTTER_LIBRARY_HEADERS "${EPHEMERAL_DIR}/flutter_linux/")
+add_library(flutter INTERFACE)
+target_include_directories(flutter INTERFACE
+  "${EPHEMERAL_DIR}"
+)
+target_link_libraries(flutter INTERFACE "${FLUTTER_LIBRARY}")
+target_link_libraries(flutter INTERFACE
+  PkgConfig::GTK
+  PkgConfig::GLIB
+  PkgConfig::GIO
+)
+add_dependencies(flutter flutter_assemble)
+
+# === Flutter tool backend ===
+# _phony_ is a non-existent file to force this command to run every time,
+# since currently there's no way to get a full input/output list from the
+# flutter tool.
+add_custom_command(
+  OUTPUT ${FLUTTER_LIBRARY} ${FLUTTER_LIBRARY_HEADERS}
+    ${CMAKE_CURRENT_BINARY_DIR}/_phony_
+  COMMAND ${CMAKE_COMMAND} -E env
+    ${FLUTTER_TOOL_ENVIRONMENT}
+    "${FLUTTER_ROOT}/packages/flutter_tools/bin/tool_backend.sh"
+      ${FLUTTER_TARGET_PLATFORM} ${CMAKE_BUILD_TYPE}
+  VERBATIM
+)
+add_custom_target(flutter_assemble DEPENDS
+  "${FLUTTER_LIBRARY}"
+  ${FLUTTER_LIBRARY_HEADERS}
+)
diff --git a/intro_flutter_gpu/step_09/linux/flutter/generated_plugin_registrant.cc b/intro_flutter_gpu/step_09/linux/flutter/generated_plugin_registrant.cc
new file mode 100644
index 0000000000..e71a16d23d
--- /dev/null
+++ b/intro_flutter_gpu/step_09/linux/flutter/generated_plugin_registrant.cc
@@ -0,0 +1,11 @@
+//
+//  Generated file. Do not edit.
+//
+
+// clang-format off
+
+#include "generated_plugin_registrant.h"
+
+
+void fl_register_plugins(FlPluginRegistry* registry) {
+}
diff --git a/intro_flutter_gpu/step_09/linux/flutter/generated_plugin_registrant.h b/intro_flutter_gpu/step_09/linux/flutter/generated_plugin_registrant.h
new file mode 100644
index 0000000000..e0f0a47bc0
--- /dev/null
+++ b/intro_flutter_gpu/step_09/linux/flutter/generated_plugin_registrant.h
@@ -0,0 +1,15 @@
+//
+//  Generated file. Do not edit.
+//
+
+// clang-format off
+
+#ifndef GENERATED_PLUGIN_REGISTRANT_
+#define GENERATED_PLUGIN_REGISTRANT_
+
+#include <flutter_linux/flutter_linux.h>
+
+// Registers Flutter plugins.
+void fl_register_plugins(FlPluginRegistry* registry);
+
+#endif  // GENERATED_PLUGIN_REGISTRANT_
diff --git a/intro_flutter_gpu/step_09/linux/flutter/generated_plugins.cmake b/intro_flutter_gpu/step_09/linux/flutter/generated_plugins.cmake
new file mode 100644
index 0000000000..2e1de87a7e
--- /dev/null
+++ b/intro_flutter_gpu/step_09/linux/flutter/generated_plugins.cmake
@@ -0,0 +1,23 @@
+#
+# Generated file, do not edit.
+#
+
+list(APPEND FLUTTER_PLUGIN_LIST
+)
+
+list(APPEND FLUTTER_FFI_PLUGIN_LIST
+)
+
+set(PLUGIN_BUNDLED_LIBRARIES)
+
+foreach(plugin ${FLUTTER_PLUGIN_LIST})
+  add_subdirectory(flutter/ephemeral/.plugin_symlinks/${plugin}/linux plugins/${plugin})
+  target_link_libraries(${BINARY_NAME} PRIVATE ${plugin}_plugin)
+  list(APPEND PLUGIN_BUNDLED_LIBRARIES $<TARGET_FILE:${plugin}_plugin>)
+  list(APPEND PLUGIN_BUNDLED_LIBRARIES ${${plugin}_bundled_libraries})
+endforeach(plugin)
+
+foreach(ffi_plugin ${FLUTTER_FFI_PLUGIN_LIST})
+  add_subdirectory(flutter/ephemeral/.plugin_symlinks/${ffi_plugin}/linux plugins/${ffi_plugin})
+  list(APPEND PLUGIN_BUNDLED_LIBRARIES ${${ffi_plugin}_bundled_libraries})
+endforeach(ffi_plugin)
diff --git a/intro_flutter_gpu/step_09/linux/runner/CMakeLists.txt b/intro_flutter_gpu/step_09/linux/runner/CMakeLists.txt
new file mode 100644
index 0000000000..e97dabc702
--- /dev/null
+++ b/intro_flutter_gpu/step_09/linux/runner/CMakeLists.txt
@@ -0,0 +1,26 @@
+cmake_minimum_required(VERSION 3.13)
+project(runner LANGUAGES CXX)
+
+# Define the application target. To change its name, change BINARY_NAME in the
+# top-level CMakeLists.txt, not the value here, or `flutter run` will no longer
+# work.
+#
+# Any new source files that you add to the application should be added here.
+add_executable(${BINARY_NAME}
+  "main.cc"
+  "my_application.cc"
+  "${FLUTTER_MANAGED_DIR}/generated_plugin_registrant.cc"
+)
+
+# Apply the standard set of build settings. This can be removed for applications
+# that need different build settings.
+apply_standard_settings(${BINARY_NAME})
+
+# Add preprocessor definitions for the application ID.
+add_definitions(-DAPPLICATION_ID="${APPLICATION_ID}")
+
+# Add dependency libraries. Add any application-specific dependencies here.
+target_link_libraries(${BINARY_NAME} PRIVATE flutter)
+target_link_libraries(${BINARY_NAME} PRIVATE PkgConfig::GTK)
+
+target_include_directories(${BINARY_NAME} PRIVATE "${CMAKE_SOURCE_DIR}")
diff --git a/intro_flutter_gpu/step_09/linux/runner/main.cc b/intro_flutter_gpu/step_09/linux/runner/main.cc
new file mode 100644
index 0000000000..e7c5c54370
--- /dev/null
+++ b/intro_flutter_gpu/step_09/linux/runner/main.cc
@@ -0,0 +1,6 @@
+#include "my_application.h"
+
+int main(int argc, char** argv) {
+  g_autoptr(MyApplication) app = my_application_new();
+  return g_application_run(G_APPLICATION(app), argc, argv);
+}
diff --git a/intro_flutter_gpu/step_09/linux/runner/my_application.cc b/intro_flutter_gpu/step_09/linux/runner/my_application.cc
new file mode 100644
index 0000000000..6c04c01067
--- /dev/null
+++ b/intro_flutter_gpu/step_09/linux/runner/my_application.cc
@@ -0,0 +1,130 @@
+#include "my_application.h"
+
+#include <flutter_linux/flutter_linux.h>
+#ifdef GDK_WINDOWING_X11
+#include <gdk/gdkx.h>
+#endif
+
+#include "flutter/generated_plugin_registrant.h"
+
+struct _MyApplication {
+  GtkApplication parent_instance;
+  char** dart_entrypoint_arguments;
+};
+
+G_DEFINE_TYPE(MyApplication, my_application, GTK_TYPE_APPLICATION)
+
+// Implements GApplication::activate.
+static void my_application_activate(GApplication* application) {
+  MyApplication* self = MY_APPLICATION(application);
+  GtkWindow* window =
+      GTK_WINDOW(gtk_application_window_new(GTK_APPLICATION(application)));
+
+  // Use a header bar when running in GNOME as this is the common style used
+  // by applications and is the setup most users will be using (e.g. Ubuntu
+  // desktop).
+  // If running on X and not using GNOME then just use a traditional title bar
+  // in case the window manager does more exotic layout, e.g. tiling.
+  // If running on Wayland assume the header bar will work (may need changing
+  // if future cases occur).
+  gboolean use_header_bar = TRUE;
+#ifdef GDK_WINDOWING_X11
+  GdkScreen* screen = gtk_window_get_screen(window);
+  if (GDK_IS_X11_SCREEN(screen)) {
+    const gchar* wm_name = gdk_x11_screen_get_window_manager_name(screen);
+    if (g_strcmp0(wm_name, "GNOME Shell") != 0) {
+      use_header_bar = FALSE;
+    }
+  }
+#endif
+  if (use_header_bar) {
+    GtkHeaderBar* header_bar = GTK_HEADER_BAR(gtk_header_bar_new());
+    gtk_widget_show(GTK_WIDGET(header_bar));
+    gtk_header_bar_set_title(header_bar, "intro_flutter_gpu");
+    gtk_header_bar_set_show_close_button(header_bar, TRUE);
+    gtk_window_set_titlebar(window, GTK_WIDGET(header_bar));
+  } else {
+    gtk_window_set_title(window, "intro_flutter_gpu");
+  }
+
+  gtk_window_set_default_size(window, 1280, 720);
+  gtk_widget_show(GTK_WIDGET(window));
+
+  g_autoptr(FlDartProject) project = fl_dart_project_new();
+  fl_dart_project_set_dart_entrypoint_arguments(project, self->dart_entrypoint_arguments);
+
+  FlView* view = fl_view_new(project);
+  gtk_widget_show(GTK_WIDGET(view));
+  gtk_container_add(GTK_CONTAINER(window), GTK_WIDGET(view));
+
+  fl_register_plugins(FL_PLUGIN_REGISTRY(view));
+
+  gtk_widget_grab_focus(GTK_WIDGET(view));
+}
+
+// Implements GApplication::local_command_line.
+static gboolean my_application_local_command_line(GApplication* application, gchar*** arguments, int* exit_status) {
+  MyApplication* self = MY_APPLICATION(application);
+  // Strip out the first argument as it is the binary name.
+  self->dart_entrypoint_arguments = g_strdupv(*arguments + 1);
+
+  g_autoptr(GError) error = nullptr;
+  if (!g_application_register(application, nullptr, &error)) {
+     g_warning("Failed to register: %s", error->message);
+     *exit_status = 1;
+     return TRUE;
+  }
+
+  g_application_activate(application);
+  *exit_status = 0;
+
+  return TRUE;
+}
+
+// Implements GApplication::startup.
+static void my_application_startup(GApplication* application) {
+  //MyApplication* self = MY_APPLICATION(object);
+
+  // Perform any actions required at application startup.
+
+  G_APPLICATION_CLASS(my_application_parent_class)->startup(application);
+}
+
+// Implements GApplication::shutdown.
+static void my_application_shutdown(GApplication* application) {
+  //MyApplication* self = MY_APPLICATION(object);
+
+  // Perform any actions required at application shutdown.
+
+  G_APPLICATION_CLASS(my_application_parent_class)->shutdown(application);
+}
+
+// Implements GObject::dispose.
+static void my_application_dispose(GObject* object) {
+  MyApplication* self = MY_APPLICATION(object);
+  g_clear_pointer(&self->dart_entrypoint_arguments, g_strfreev);
+  G_OBJECT_CLASS(my_application_parent_class)->dispose(object);
+}
+
+static void my_application_class_init(MyApplicationClass* klass) {
+  G_APPLICATION_CLASS(klass)->activate = my_application_activate;
+  G_APPLICATION_CLASS(klass)->local_command_line = my_application_local_command_line;
+  G_APPLICATION_CLASS(klass)->startup = my_application_startup;
+  G_APPLICATION_CLASS(klass)->shutdown = my_application_shutdown;
+  G_OBJECT_CLASS(klass)->dispose = my_application_dispose;
+}
+
+static void my_application_init(MyApplication* self) {}
+
+MyApplication* my_application_new() {
+  // Set the program name to the application ID, which helps various systems
+  // like GTK and desktop environments map this running application to its
+  // corresponding .desktop file. This ensures better integration by allowing
+  // the application to be recognized beyond its binary name.
+  g_set_prgname(APPLICATION_ID);
+
+  return MY_APPLICATION(g_object_new(my_application_get_type(),
+                                     "application-id", APPLICATION_ID,
+                                     "flags", G_APPLICATION_NON_UNIQUE,
+                                     nullptr));
+}
diff --git a/intro_flutter_gpu/step_09/linux/runner/my_application.h b/intro_flutter_gpu/step_09/linux/runner/my_application.h
new file mode 100644
index 0000000000..72271d5e41
--- /dev/null
+++ b/intro_flutter_gpu/step_09/linux/runner/my_application.h
@@ -0,0 +1,18 @@
+#ifndef FLUTTER_MY_APPLICATION_H_
+#define FLUTTER_MY_APPLICATION_H_
+
+#include <gtk/gtk.h>
+
+G_DECLARE_FINAL_TYPE(MyApplication, my_application, MY, APPLICATION,
+                     GtkApplication)
+
+/**
+ * my_application_new:
+ *
+ * Creates a new Flutter-based application.
+ *
+ * Returns: a new #MyApplication.
+ */
+MyApplication* my_application_new();
+
+#endif  // FLUTTER_MY_APPLICATION_H_
diff --git a/intro_flutter_gpu/step_09/macos/Runner/Configs/AppInfo.xcconfig b/intro_flutter_gpu/step_09/macos/Runner/Configs/AppInfo.xcconfig
index 87348d3f8a..e4fb8e9e62 100644
--- a/intro_flutter_gpu/step_09/macos/Runner/Configs/AppInfo.xcconfig
+++ b/intro_flutter_gpu/step_09/macos/Runner/Configs/AppInfo.xcconfig
@@ -11,4 +11,4 @@ PRODUCT_NAME = intro_flutter_gpu
 PRODUCT_BUNDLE_IDENTIFIER = com.example.introFlutterGpu
 
 // The copyright displayed in application information
-PRODUCT_COPYRIGHT = Copyright © 2024 com.example. All rights reserved.
+PRODUCT_COPYRIGHT = Copyright © 2025 com.example. All rights reserved.
diff --git a/intro_flutter_gpu/step_09/windows/runner/Runner.rc b/intro_flutter_gpu/step_09/windows/runner/Runner.rc
index a76c0ec0fc..26e1dbe547 100644
--- a/intro_flutter_gpu/step_09/windows/runner/Runner.rc
+++ b/intro_flutter_gpu/step_09/windows/runner/Runner.rc
@@ -93,7 +93,7 @@ BEGIN
             VALUE "FileDescription", "intro_flutter_gpu" "\0"
             VALUE "FileVersion", VERSION_AS_STRING "\0"
             VALUE "InternalName", "intro_flutter_gpu" "\0"
-            VALUE "LegalCopyright", "Copyright (C) 2024 com.example. All rights reserved." "\0"
+            VALUE "LegalCopyright", "Copyright (C) 2025 com.example. All rights reserved." "\0"
             VALUE "OriginalFilename", "intro_flutter_gpu.exe" "\0"
             VALUE "ProductName", "intro_flutter_gpu" "\0"
             VALUE "ProductVersion", VERSION_AS_STRING "\0"
diff --git a/intro_flutter_gpu/step_10/android/.gitignore b/intro_flutter_gpu/step_10/android/.gitignore
index 55afd919c6..be3943c96d 100644
--- a/intro_flutter_gpu/step_10/android/.gitignore
+++ b/intro_flutter_gpu/step_10/android/.gitignore
@@ -5,6 +5,7 @@ gradle-wrapper.jar
 /gradlew.bat
 /local.properties
 GeneratedPluginRegistrant.java
+.cxx/
 
 # Remember to never publicly share your keystore.
 # See https://flutter.dev/to/reference-keystore
diff --git a/intro_flutter_gpu/step_10/android/app/build.gradle.kts b/intro_flutter_gpu/step_10/android/app/build.gradle.kts
index 857326fb7b..ba03f47e22 100644
--- a/intro_flutter_gpu/step_10/android/app/build.gradle.kts
+++ b/intro_flutter_gpu/step_10/android/app/build.gradle.kts
@@ -11,12 +11,12 @@ android {
     ndkVersion = flutter.ndkVersion
 
     compileOptions {
-        sourceCompatibility = JavaVersion.VERSION_1_8
-        targetCompatibility = JavaVersion.VERSION_1_8
+        sourceCompatibility = JavaVersion.VERSION_11
+        targetCompatibility = JavaVersion.VERSION_11
     }
 
     kotlinOptions {
-        jvmTarget = JavaVersion.VERSION_1_8.toString()
+        jvmTarget = JavaVersion.VERSION_11.toString()
     }
 
     defaultConfig {
diff --git a/intro_flutter_gpu/step_10/android/app/src/main/kotlin/com/example/intro_flutter_gpu/MainActivity.kt b/intro_flutter_gpu/step_10/android/app/src/main/kotlin/com/example/intro_flutter_gpu/MainActivity.kt
index 28c6a72dea..309b877fe4 100644
--- a/intro_flutter_gpu/step_10/android/app/src/main/kotlin/com/example/intro_flutter_gpu/MainActivity.kt
+++ b/intro_flutter_gpu/step_10/android/app/src/main/kotlin/com/example/intro_flutter_gpu/MainActivity.kt
@@ -2,4 +2,4 @@ package com.example.intro_flutter_gpu
 
 import io.flutter.embedding.android.FlutterActivity
 
-class MainActivity: FlutterActivity()
+class MainActivity : FlutterActivity()
diff --git a/intro_flutter_gpu/step_10/linux/.gitignore b/intro_flutter_gpu/step_10/linux/.gitignore
new file mode 100644
index 0000000000..d3896c9844
--- /dev/null
+++ b/intro_flutter_gpu/step_10/linux/.gitignore
@@ -0,0 +1 @@
+flutter/ephemeral
diff --git a/intro_flutter_gpu/step_10/linux/CMakeLists.txt b/intro_flutter_gpu/step_10/linux/CMakeLists.txt
new file mode 100644
index 0000000000..a487a7465e
--- /dev/null
+++ b/intro_flutter_gpu/step_10/linux/CMakeLists.txt
@@ -0,0 +1,128 @@
+# Project-level configuration.
+cmake_minimum_required(VERSION 3.13)
+project(runner LANGUAGES CXX)
+
+# The name of the executable created for the application. Change this to change
+# the on-disk name of your application.
+set(BINARY_NAME "intro_flutter_gpu")
+# The unique GTK application identifier for this application. See:
+# https://wiki.gnome.org/HowDoI/ChooseApplicationID
+set(APPLICATION_ID "com.example.intro_flutter_gpu")
+
+# Explicitly opt in to modern CMake behaviors to avoid warnings with recent
+# versions of CMake.
+cmake_policy(SET CMP0063 NEW)
+
+# Load bundled libraries from the lib/ directory relative to the binary.
+set(CMAKE_INSTALL_RPATH "$ORIGIN/lib")
+
+# Root filesystem for cross-building.
+if(FLUTTER_TARGET_PLATFORM_SYSROOT)
+  set(CMAKE_SYSROOT ${FLUTTER_TARGET_PLATFORM_SYSROOT})
+  set(CMAKE_FIND_ROOT_PATH ${CMAKE_SYSROOT})
+  set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+  set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
+  set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+  set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+endif()
+
+# Define build configuration options.
+if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
+  set(CMAKE_BUILD_TYPE "Debug" CACHE
+    STRING "Flutter build mode" FORCE)
+  set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS
+    "Debug" "Profile" "Release")
+endif()
+
+# Compilation settings that should be applied to most targets.
+#
+# Be cautious about adding new options here, as plugins use this function by
+# default. In most cases, you should add new options to specific targets instead
+# of modifying this function.
+function(APPLY_STANDARD_SETTINGS TARGET)
+  target_compile_features(${TARGET} PUBLIC cxx_std_14)
+  target_compile_options(${TARGET} PRIVATE -Wall -Werror)
+  target_compile_options(${TARGET} PRIVATE "$<$<NOT:$<CONFIG:Debug>>:-O3>")
+  target_compile_definitions(${TARGET} PRIVATE "$<$<NOT:$<CONFIG:Debug>>:NDEBUG>")
+endfunction()
+
+# Flutter library and tool build rules.
+set(FLUTTER_MANAGED_DIR "${CMAKE_CURRENT_SOURCE_DIR}/flutter")
+add_subdirectory(${FLUTTER_MANAGED_DIR})
+
+# System-level dependencies.
+find_package(PkgConfig REQUIRED)
+pkg_check_modules(GTK REQUIRED IMPORTED_TARGET gtk+-3.0)
+
+# Application build; see runner/CMakeLists.txt.
+add_subdirectory("runner")
+
+# Run the Flutter tool portions of the build. This must not be removed.
+add_dependencies(${BINARY_NAME} flutter_assemble)
+
+# Only the install-generated bundle's copy of the executable will launch
+# correctly, since the resources must in the right relative locations. To avoid
+# people trying to run the unbundled copy, put it in a subdirectory instead of
+# the default top-level location.
+set_target_properties(${BINARY_NAME}
+  PROPERTIES
+  RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/intermediates_do_not_run"
+)
+
+
+# Generated plugin build rules, which manage building the plugins and adding
+# them to the application.
+include(flutter/generated_plugins.cmake)
+
+
+# === Installation ===
+# By default, "installing" just makes a relocatable bundle in the build
+# directory.
+set(BUILD_BUNDLE_DIR "${PROJECT_BINARY_DIR}/bundle")
+if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
+  set(CMAKE_INSTALL_PREFIX "${BUILD_BUNDLE_DIR}" CACHE PATH "..." FORCE)
+endif()
+
+# Start with a clean build bundle directory every time.
+install(CODE "
+  file(REMOVE_RECURSE \"${BUILD_BUNDLE_DIR}/\")
+  " COMPONENT Runtime)
+
+set(INSTALL_BUNDLE_DATA_DIR "${CMAKE_INSTALL_PREFIX}/data")
+set(INSTALL_BUNDLE_LIB_DIR "${CMAKE_INSTALL_PREFIX}/lib")
+
+install(TARGETS ${BINARY_NAME} RUNTIME DESTINATION "${CMAKE_INSTALL_PREFIX}"
+  COMPONENT Runtime)
+
+install(FILES "${FLUTTER_ICU_DATA_FILE}" DESTINATION "${INSTALL_BUNDLE_DATA_DIR}"
+  COMPONENT Runtime)
+
+install(FILES "${FLUTTER_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+  COMPONENT Runtime)
+
+foreach(bundled_library ${PLUGIN_BUNDLED_LIBRARIES})
+  install(FILES "${bundled_library}"
+    DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+    COMPONENT Runtime)
+endforeach(bundled_library)
+
+# Copy the native assets provided by the build.dart from all packages.
+set(NATIVE_ASSETS_DIR "${PROJECT_BUILD_DIR}native_assets/linux/")
+install(DIRECTORY "${NATIVE_ASSETS_DIR}"
+   DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+   COMPONENT Runtime)
+
+# Fully re-copy the assets directory on each build to avoid having stale files
+# from a previous install.
+set(FLUTTER_ASSET_DIR_NAME "flutter_assets")
+install(CODE "
+  file(REMOVE_RECURSE \"${INSTALL_BUNDLE_DATA_DIR}/${FLUTTER_ASSET_DIR_NAME}\")
+  " COMPONENT Runtime)
+install(DIRECTORY "${PROJECT_BUILD_DIR}/${FLUTTER_ASSET_DIR_NAME}"
+  DESTINATION "${INSTALL_BUNDLE_DATA_DIR}" COMPONENT Runtime)
+
+# Install the AOT library on non-Debug builds only.
+if(NOT CMAKE_BUILD_TYPE MATCHES "Debug")
+  install(FILES "${AOT_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+    COMPONENT Runtime)
+endif()
diff --git a/intro_flutter_gpu/step_10/linux/flutter/CMakeLists.txt b/intro_flutter_gpu/step_10/linux/flutter/CMakeLists.txt
new file mode 100644
index 0000000000..d5bd01648a
--- /dev/null
+++ b/intro_flutter_gpu/step_10/linux/flutter/CMakeLists.txt
@@ -0,0 +1,88 @@
+# This file controls Flutter-level build steps. It should not be edited.
+cmake_minimum_required(VERSION 3.10)
+
+set(EPHEMERAL_DIR "${CMAKE_CURRENT_SOURCE_DIR}/ephemeral")
+
+# Configuration provided via flutter tool.
+include(${EPHEMERAL_DIR}/generated_config.cmake)
+
+# TODO: Move the rest of this into files in ephemeral. See
+# https://github.com/flutter/flutter/issues/57146.
+
+# Serves the same purpose as list(TRANSFORM ... PREPEND ...),
+# which isn't available in 3.10.
+function(list_prepend LIST_NAME PREFIX)
+    set(NEW_LIST "")
+    foreach(element ${${LIST_NAME}})
+        list(APPEND NEW_LIST "${PREFIX}${element}")
+    endforeach(element)
+    set(${LIST_NAME} "${NEW_LIST}" PARENT_SCOPE)
+endfunction()
+
+# === Flutter Library ===
+# System-level dependencies.
+find_package(PkgConfig REQUIRED)
+pkg_check_modules(GTK REQUIRED IMPORTED_TARGET gtk+-3.0)
+pkg_check_modules(GLIB REQUIRED IMPORTED_TARGET glib-2.0)
+pkg_check_modules(GIO REQUIRED IMPORTED_TARGET gio-2.0)
+
+set(FLUTTER_LIBRARY "${EPHEMERAL_DIR}/libflutter_linux_gtk.so")
+
+# Published to parent scope for install step.
+set(FLUTTER_LIBRARY ${FLUTTER_LIBRARY} PARENT_SCOPE)
+set(FLUTTER_ICU_DATA_FILE "${EPHEMERAL_DIR}/icudtl.dat" PARENT_SCOPE)
+set(PROJECT_BUILD_DIR "${PROJECT_DIR}/build/" PARENT_SCOPE)
+set(AOT_LIBRARY "${PROJECT_DIR}/build/lib/libapp.so" PARENT_SCOPE)
+
+list(APPEND FLUTTER_LIBRARY_HEADERS
+  "fl_basic_message_channel.h"
+  "fl_binary_codec.h"
+  "fl_binary_messenger.h"
+  "fl_dart_project.h"
+  "fl_engine.h"
+  "fl_json_message_codec.h"
+  "fl_json_method_codec.h"
+  "fl_message_codec.h"
+  "fl_method_call.h"
+  "fl_method_channel.h"
+  "fl_method_codec.h"
+  "fl_method_response.h"
+  "fl_plugin_registrar.h"
+  "fl_plugin_registry.h"
+  "fl_standard_message_codec.h"
+  "fl_standard_method_codec.h"
+  "fl_string_codec.h"
+  "fl_value.h"
+  "fl_view.h"
+  "flutter_linux.h"
+)
+list_prepend(FLUTTER_LIBRARY_HEADERS "${EPHEMERAL_DIR}/flutter_linux/")
+add_library(flutter INTERFACE)
+target_include_directories(flutter INTERFACE
+  "${EPHEMERAL_DIR}"
+)
+target_link_libraries(flutter INTERFACE "${FLUTTER_LIBRARY}")
+target_link_libraries(flutter INTERFACE
+  PkgConfig::GTK
+  PkgConfig::GLIB
+  PkgConfig::GIO
+)
+add_dependencies(flutter flutter_assemble)
+
+# === Flutter tool backend ===
+# _phony_ is a non-existent file to force this command to run every time,
+# since currently there's no way to get a full input/output list from the
+# flutter tool.
+add_custom_command(
+  OUTPUT ${FLUTTER_LIBRARY} ${FLUTTER_LIBRARY_HEADERS}
+    ${CMAKE_CURRENT_BINARY_DIR}/_phony_
+  COMMAND ${CMAKE_COMMAND} -E env
+    ${FLUTTER_TOOL_ENVIRONMENT}
+    "${FLUTTER_ROOT}/packages/flutter_tools/bin/tool_backend.sh"
+      ${FLUTTER_TARGET_PLATFORM} ${CMAKE_BUILD_TYPE}
+  VERBATIM
+)
+add_custom_target(flutter_assemble DEPENDS
+  "${FLUTTER_LIBRARY}"
+  ${FLUTTER_LIBRARY_HEADERS}
+)
diff --git a/intro_flutter_gpu/step_10/linux/flutter/generated_plugin_registrant.cc b/intro_flutter_gpu/step_10/linux/flutter/generated_plugin_registrant.cc
new file mode 100644
index 0000000000..e71a16d23d
--- /dev/null
+++ b/intro_flutter_gpu/step_10/linux/flutter/generated_plugin_registrant.cc
@@ -0,0 +1,11 @@
+//
+//  Generated file. Do not edit.
+//
+
+// clang-format off
+
+#include "generated_plugin_registrant.h"
+
+
+void fl_register_plugins(FlPluginRegistry* registry) {
+}
diff --git a/intro_flutter_gpu/step_10/linux/flutter/generated_plugin_registrant.h b/intro_flutter_gpu/step_10/linux/flutter/generated_plugin_registrant.h
new file mode 100644
index 0000000000..e0f0a47bc0
--- /dev/null
+++ b/intro_flutter_gpu/step_10/linux/flutter/generated_plugin_registrant.h
@@ -0,0 +1,15 @@
+//
+//  Generated file. Do not edit.
+//
+
+// clang-format off
+
+#ifndef GENERATED_PLUGIN_REGISTRANT_
+#define GENERATED_PLUGIN_REGISTRANT_
+
+#include <flutter_linux/flutter_linux.h>
+
+// Registers Flutter plugins.
+void fl_register_plugins(FlPluginRegistry* registry);
+
+#endif  // GENERATED_PLUGIN_REGISTRANT_
diff --git a/intro_flutter_gpu/step_10/linux/flutter/generated_plugins.cmake b/intro_flutter_gpu/step_10/linux/flutter/generated_plugins.cmake
new file mode 100644
index 0000000000..2e1de87a7e
--- /dev/null
+++ b/intro_flutter_gpu/step_10/linux/flutter/generated_plugins.cmake
@@ -0,0 +1,23 @@
+#
+# Generated file, do not edit.
+#
+
+list(APPEND FLUTTER_PLUGIN_LIST
+)
+
+list(APPEND FLUTTER_FFI_PLUGIN_LIST
+)
+
+set(PLUGIN_BUNDLED_LIBRARIES)
+
+foreach(plugin ${FLUTTER_PLUGIN_LIST})
+  add_subdirectory(flutter/ephemeral/.plugin_symlinks/${plugin}/linux plugins/${plugin})
+  target_link_libraries(${BINARY_NAME} PRIVATE ${plugin}_plugin)
+  list(APPEND PLUGIN_BUNDLED_LIBRARIES $<TARGET_FILE:${plugin}_plugin>)
+  list(APPEND PLUGIN_BUNDLED_LIBRARIES ${${plugin}_bundled_libraries})
+endforeach(plugin)
+
+foreach(ffi_plugin ${FLUTTER_FFI_PLUGIN_LIST})
+  add_subdirectory(flutter/ephemeral/.plugin_symlinks/${ffi_plugin}/linux plugins/${ffi_plugin})
+  list(APPEND PLUGIN_BUNDLED_LIBRARIES ${${ffi_plugin}_bundled_libraries})
+endforeach(ffi_plugin)
diff --git a/intro_flutter_gpu/step_10/linux/runner/CMakeLists.txt b/intro_flutter_gpu/step_10/linux/runner/CMakeLists.txt
new file mode 100644
index 0000000000..e97dabc702
--- /dev/null
+++ b/intro_flutter_gpu/step_10/linux/runner/CMakeLists.txt
@@ -0,0 +1,26 @@
+cmake_minimum_required(VERSION 3.13)
+project(runner LANGUAGES CXX)
+
+# Define the application target. To change its name, change BINARY_NAME in the
+# top-level CMakeLists.txt, not the value here, or `flutter run` will no longer
+# work.
+#
+# Any new source files that you add to the application should be added here.
+add_executable(${BINARY_NAME}
+  "main.cc"
+  "my_application.cc"
+  "${FLUTTER_MANAGED_DIR}/generated_plugin_registrant.cc"
+)
+
+# Apply the standard set of build settings. This can be removed for applications
+# that need different build settings.
+apply_standard_settings(${BINARY_NAME})
+
+# Add preprocessor definitions for the application ID.
+add_definitions(-DAPPLICATION_ID="${APPLICATION_ID}")
+
+# Add dependency libraries. Add any application-specific dependencies here.
+target_link_libraries(${BINARY_NAME} PRIVATE flutter)
+target_link_libraries(${BINARY_NAME} PRIVATE PkgConfig::GTK)
+
+target_include_directories(${BINARY_NAME} PRIVATE "${CMAKE_SOURCE_DIR}")
diff --git a/intro_flutter_gpu/step_10/linux/runner/main.cc b/intro_flutter_gpu/step_10/linux/runner/main.cc
new file mode 100644
index 0000000000..e7c5c54370
--- /dev/null
+++ b/intro_flutter_gpu/step_10/linux/runner/main.cc
@@ -0,0 +1,6 @@
+#include "my_application.h"
+
+int main(int argc, char** argv) {
+  g_autoptr(MyApplication) app = my_application_new();
+  return g_application_run(G_APPLICATION(app), argc, argv);
+}
diff --git a/intro_flutter_gpu/step_10/linux/runner/my_application.cc b/intro_flutter_gpu/step_10/linux/runner/my_application.cc
new file mode 100644
index 0000000000..6c04c01067
--- /dev/null
+++ b/intro_flutter_gpu/step_10/linux/runner/my_application.cc
@@ -0,0 +1,130 @@
+#include "my_application.h"
+
+#include <flutter_linux/flutter_linux.h>
+#ifdef GDK_WINDOWING_X11
+#include <gdk/gdkx.h>
+#endif
+
+#include "flutter/generated_plugin_registrant.h"
+
+struct _MyApplication {
+  GtkApplication parent_instance;
+  char** dart_entrypoint_arguments;
+};
+
+G_DEFINE_TYPE(MyApplication, my_application, GTK_TYPE_APPLICATION)
+
+// Implements GApplication::activate.
+static void my_application_activate(GApplication* application) {
+  MyApplication* self = MY_APPLICATION(application);
+  GtkWindow* window =
+      GTK_WINDOW(gtk_application_window_new(GTK_APPLICATION(application)));
+
+  // Use a header bar when running in GNOME as this is the common style used
+  // by applications and is the setup most users will be using (e.g. Ubuntu
+  // desktop).
+  // If running on X and not using GNOME then just use a traditional title bar
+  // in case the window manager does more exotic layout, e.g. tiling.
+  // If running on Wayland assume the header bar will work (may need changing
+  // if future cases occur).
+  gboolean use_header_bar = TRUE;
+#ifdef GDK_WINDOWING_X11
+  GdkScreen* screen = gtk_window_get_screen(window);
+  if (GDK_IS_X11_SCREEN(screen)) {
+    const gchar* wm_name = gdk_x11_screen_get_window_manager_name(screen);
+    if (g_strcmp0(wm_name, "GNOME Shell") != 0) {
+      use_header_bar = FALSE;
+    }
+  }
+#endif
+  if (use_header_bar) {
+    GtkHeaderBar* header_bar = GTK_HEADER_BAR(gtk_header_bar_new());
+    gtk_widget_show(GTK_WIDGET(header_bar));
+    gtk_header_bar_set_title(header_bar, "intro_flutter_gpu");
+    gtk_header_bar_set_show_close_button(header_bar, TRUE);
+    gtk_window_set_titlebar(window, GTK_WIDGET(header_bar));
+  } else {
+    gtk_window_set_title(window, "intro_flutter_gpu");
+  }
+
+  gtk_window_set_default_size(window, 1280, 720);
+  gtk_widget_show(GTK_WIDGET(window));
+
+  g_autoptr(FlDartProject) project = fl_dart_project_new();
+  fl_dart_project_set_dart_entrypoint_arguments(project, self->dart_entrypoint_arguments);
+
+  FlView* view = fl_view_new(project);
+  gtk_widget_show(GTK_WIDGET(view));
+  gtk_container_add(GTK_CONTAINER(window), GTK_WIDGET(view));
+
+  fl_register_plugins(FL_PLUGIN_REGISTRY(view));
+
+  gtk_widget_grab_focus(GTK_WIDGET(view));
+}
+
+// Implements GApplication::local_command_line.
+static gboolean my_application_local_command_line(GApplication* application, gchar*** arguments, int* exit_status) {
+  MyApplication* self = MY_APPLICATION(application);
+  // Strip out the first argument as it is the binary name.
+  self->dart_entrypoint_arguments = g_strdupv(*arguments + 1);
+
+  g_autoptr(GError) error = nullptr;
+  if (!g_application_register(application, nullptr, &error)) {
+     g_warning("Failed to register: %s", error->message);
+     *exit_status = 1;
+     return TRUE;
+  }
+
+  g_application_activate(application);
+  *exit_status = 0;
+
+  return TRUE;
+}
+
+// Implements GApplication::startup.
+static void my_application_startup(GApplication* application) {
+  //MyApplication* self = MY_APPLICATION(object);
+
+  // Perform any actions required at application startup.
+
+  G_APPLICATION_CLASS(my_application_parent_class)->startup(application);
+}
+
+// Implements GApplication::shutdown.
+static void my_application_shutdown(GApplication* application) {
+  //MyApplication* self = MY_APPLICATION(object);
+
+  // Perform any actions required at application shutdown.
+
+  G_APPLICATION_CLASS(my_application_parent_class)->shutdown(application);
+}
+
+// Implements GObject::dispose.
+static void my_application_dispose(GObject* object) {
+  MyApplication* self = MY_APPLICATION(object);
+  g_clear_pointer(&self->dart_entrypoint_arguments, g_strfreev);
+  G_OBJECT_CLASS(my_application_parent_class)->dispose(object);
+}
+
+static void my_application_class_init(MyApplicationClass* klass) {
+  G_APPLICATION_CLASS(klass)->activate = my_application_activate;
+  G_APPLICATION_CLASS(klass)->local_command_line = my_application_local_command_line;
+  G_APPLICATION_CLASS(klass)->startup = my_application_startup;
+  G_APPLICATION_CLASS(klass)->shutdown = my_application_shutdown;
+  G_OBJECT_CLASS(klass)->dispose = my_application_dispose;
+}
+
+static void my_application_init(MyApplication* self) {}
+
+MyApplication* my_application_new() {
+  // Set the program name to the application ID, which helps various systems
+  // like GTK and desktop environments map this running application to its
+  // corresponding .desktop file. This ensures better integration by allowing
+  // the application to be recognized beyond its binary name.
+  g_set_prgname(APPLICATION_ID);
+
+  return MY_APPLICATION(g_object_new(my_application_get_type(),
+                                     "application-id", APPLICATION_ID,
+                                     "flags", G_APPLICATION_NON_UNIQUE,
+                                     nullptr));
+}
diff --git a/intro_flutter_gpu/step_10/linux/runner/my_application.h b/intro_flutter_gpu/step_10/linux/runner/my_application.h
new file mode 100644
index 0000000000..72271d5e41
--- /dev/null
+++ b/intro_flutter_gpu/step_10/linux/runner/my_application.h
@@ -0,0 +1,18 @@
+#ifndef FLUTTER_MY_APPLICATION_H_
+#define FLUTTER_MY_APPLICATION_H_
+
+#include <gtk/gtk.h>
+
+G_DECLARE_FINAL_TYPE(MyApplication, my_application, MY, APPLICATION,
+                     GtkApplication)
+
+/**
+ * my_application_new:
+ *
+ * Creates a new Flutter-based application.
+ *
+ * Returns: a new #MyApplication.
+ */
+MyApplication* my_application_new();
+
+#endif  // FLUTTER_MY_APPLICATION_H_
diff --git a/intro_flutter_gpu/step_10/macos/Runner/Configs/AppInfo.xcconfig b/intro_flutter_gpu/step_10/macos/Runner/Configs/AppInfo.xcconfig
index 87348d3f8a..e4fb8e9e62 100644
--- a/intro_flutter_gpu/step_10/macos/Runner/Configs/AppInfo.xcconfig
+++ b/intro_flutter_gpu/step_10/macos/Runner/Configs/AppInfo.xcconfig
@@ -11,4 +11,4 @@ PRODUCT_NAME = intro_flutter_gpu
 PRODUCT_BUNDLE_IDENTIFIER = com.example.introFlutterGpu
 
 // The copyright displayed in application information
-PRODUCT_COPYRIGHT = Copyright © 2024 com.example. All rights reserved.
+PRODUCT_COPYRIGHT = Copyright © 2025 com.example. All rights reserved.
diff --git a/intro_flutter_gpu/step_10/windows/runner/Runner.rc b/intro_flutter_gpu/step_10/windows/runner/Runner.rc
index a76c0ec0fc..26e1dbe547 100644
--- a/intro_flutter_gpu/step_10/windows/runner/Runner.rc
+++ b/intro_flutter_gpu/step_10/windows/runner/Runner.rc
@@ -93,7 +93,7 @@ BEGIN
             VALUE "FileDescription", "intro_flutter_gpu" "\0"
             VALUE "FileVersion", VERSION_AS_STRING "\0"
             VALUE "InternalName", "intro_flutter_gpu" "\0"
-            VALUE "LegalCopyright", "Copyright (C) 2024 com.example. All rights reserved." "\0"
+            VALUE "LegalCopyright", "Copyright (C) 2025 com.example. All rights reserved." "\0"
             VALUE "OriginalFilename", "intro_flutter_gpu.exe" "\0"
             VALUE "ProductName", "intro_flutter_gpu" "\0"
             VALUE "ProductVersion", VERSION_AS_STRING "\0"
diff --git a/intro_flutter_gpu/step_11/android/.gitignore b/intro_flutter_gpu/step_11/android/.gitignore
index 55afd919c6..be3943c96d 100644
--- a/intro_flutter_gpu/step_11/android/.gitignore
+++ b/intro_flutter_gpu/step_11/android/.gitignore
@@ -5,6 +5,7 @@ gradle-wrapper.jar
 /gradlew.bat
 /local.properties
 GeneratedPluginRegistrant.java
+.cxx/
 
 # Remember to never publicly share your keystore.
 # See https://flutter.dev/to/reference-keystore
diff --git a/intro_flutter_gpu/step_11/android/app/build.gradle.kts b/intro_flutter_gpu/step_11/android/app/build.gradle.kts
index 857326fb7b..ba03f47e22 100644
--- a/intro_flutter_gpu/step_11/android/app/build.gradle.kts
+++ b/intro_flutter_gpu/step_11/android/app/build.gradle.kts
@@ -11,12 +11,12 @@ android {
     ndkVersion = flutter.ndkVersion
 
     compileOptions {
-        sourceCompatibility = JavaVersion.VERSION_1_8
-        targetCompatibility = JavaVersion.VERSION_1_8
+        sourceCompatibility = JavaVersion.VERSION_11
+        targetCompatibility = JavaVersion.VERSION_11
     }
 
     kotlinOptions {
-        jvmTarget = JavaVersion.VERSION_1_8.toString()
+        jvmTarget = JavaVersion.VERSION_11.toString()
     }
 
     defaultConfig {
diff --git a/intro_flutter_gpu/step_11/android/app/src/main/kotlin/com/example/intro_flutter_gpu/MainActivity.kt b/intro_flutter_gpu/step_11/android/app/src/main/kotlin/com/example/intro_flutter_gpu/MainActivity.kt
index 28c6a72dea..309b877fe4 100644
--- a/intro_flutter_gpu/step_11/android/app/src/main/kotlin/com/example/intro_flutter_gpu/MainActivity.kt
+++ b/intro_flutter_gpu/step_11/android/app/src/main/kotlin/com/example/intro_flutter_gpu/MainActivity.kt
@@ -2,4 +2,4 @@ package com.example.intro_flutter_gpu
 
 import io.flutter.embedding.android.FlutterActivity
 
-class MainActivity: FlutterActivity()
+class MainActivity : FlutterActivity()
diff --git a/intro_flutter_gpu/step_11/linux/.gitignore b/intro_flutter_gpu/step_11/linux/.gitignore
new file mode 100644
index 0000000000..d3896c9844
--- /dev/null
+++ b/intro_flutter_gpu/step_11/linux/.gitignore
@@ -0,0 +1 @@
+flutter/ephemeral
diff --git a/intro_flutter_gpu/step_11/linux/CMakeLists.txt b/intro_flutter_gpu/step_11/linux/CMakeLists.txt
new file mode 100644
index 0000000000..a487a7465e
--- /dev/null
+++ b/intro_flutter_gpu/step_11/linux/CMakeLists.txt
@@ -0,0 +1,128 @@
+# Project-level configuration.
+cmake_minimum_required(VERSION 3.13)
+project(runner LANGUAGES CXX)
+
+# The name of the executable created for the application. Change this to change
+# the on-disk name of your application.
+set(BINARY_NAME "intro_flutter_gpu")
+# The unique GTK application identifier for this application. See:
+# https://wiki.gnome.org/HowDoI/ChooseApplicationID
+set(APPLICATION_ID "com.example.intro_flutter_gpu")
+
+# Explicitly opt in to modern CMake behaviors to avoid warnings with recent
+# versions of CMake.
+cmake_policy(SET CMP0063 NEW)
+
+# Load bundled libraries from the lib/ directory relative to the binary.
+set(CMAKE_INSTALL_RPATH "$ORIGIN/lib")
+
+# Root filesystem for cross-building.
+if(FLUTTER_TARGET_PLATFORM_SYSROOT)
+  set(CMAKE_SYSROOT ${FLUTTER_TARGET_PLATFORM_SYSROOT})
+  set(CMAKE_FIND_ROOT_PATH ${CMAKE_SYSROOT})
+  set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+  set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
+  set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+  set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+endif()
+
+# Define build configuration options.
+if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
+  set(CMAKE_BUILD_TYPE "Debug" CACHE
+    STRING "Flutter build mode" FORCE)
+  set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS
+    "Debug" "Profile" "Release")
+endif()
+
+# Compilation settings that should be applied to most targets.
+#
+# Be cautious about adding new options here, as plugins use this function by
+# default. In most cases, you should add new options to specific targets instead
+# of modifying this function.
+function(APPLY_STANDARD_SETTINGS TARGET)
+  target_compile_features(${TARGET} PUBLIC cxx_std_14)
+  target_compile_options(${TARGET} PRIVATE -Wall -Werror)
+  target_compile_options(${TARGET} PRIVATE "$<$<NOT:$<CONFIG:Debug>>:-O3>")
+  target_compile_definitions(${TARGET} PRIVATE "$<$<NOT:$<CONFIG:Debug>>:NDEBUG>")
+endfunction()
+
+# Flutter library and tool build rules.
+set(FLUTTER_MANAGED_DIR "${CMAKE_CURRENT_SOURCE_DIR}/flutter")
+add_subdirectory(${FLUTTER_MANAGED_DIR})
+
+# System-level dependencies.
+find_package(PkgConfig REQUIRED)
+pkg_check_modules(GTK REQUIRED IMPORTED_TARGET gtk+-3.0)
+
+# Application build; see runner/CMakeLists.txt.
+add_subdirectory("runner")
+
+# Run the Flutter tool portions of the build. This must not be removed.
+add_dependencies(${BINARY_NAME} flutter_assemble)
+
+# Only the install-generated bundle's copy of the executable will launch
+# correctly, since the resources must in the right relative locations. To avoid
+# people trying to run the unbundled copy, put it in a subdirectory instead of
+# the default top-level location.
+set_target_properties(${BINARY_NAME}
+  PROPERTIES
+  RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/intermediates_do_not_run"
+)
+
+
+# Generated plugin build rules, which manage building the plugins and adding
+# them to the application.
+include(flutter/generated_plugins.cmake)
+
+
+# === Installation ===
+# By default, "installing" just makes a relocatable bundle in the build
+# directory.
+set(BUILD_BUNDLE_DIR "${PROJECT_BINARY_DIR}/bundle")
+if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
+  set(CMAKE_INSTALL_PREFIX "${BUILD_BUNDLE_DIR}" CACHE PATH "..." FORCE)
+endif()
+
+# Start with a clean build bundle directory every time.
+install(CODE "
+  file(REMOVE_RECURSE \"${BUILD_BUNDLE_DIR}/\")
+  " COMPONENT Runtime)
+
+set(INSTALL_BUNDLE_DATA_DIR "${CMAKE_INSTALL_PREFIX}/data")
+set(INSTALL_BUNDLE_LIB_DIR "${CMAKE_INSTALL_PREFIX}/lib")
+
+install(TARGETS ${BINARY_NAME} RUNTIME DESTINATION "${CMAKE_INSTALL_PREFIX}"
+  COMPONENT Runtime)
+
+install(FILES "${FLUTTER_ICU_DATA_FILE}" DESTINATION "${INSTALL_BUNDLE_DATA_DIR}"
+  COMPONENT Runtime)
+
+install(FILES "${FLUTTER_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+  COMPONENT Runtime)
+
+foreach(bundled_library ${PLUGIN_BUNDLED_LIBRARIES})
+  install(FILES "${bundled_library}"
+    DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+    COMPONENT Runtime)
+endforeach(bundled_library)
+
+# Copy the native assets provided by the build.dart from all packages.
+set(NATIVE_ASSETS_DIR "${PROJECT_BUILD_DIR}native_assets/linux/")
+install(DIRECTORY "${NATIVE_ASSETS_DIR}"
+   DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+   COMPONENT Runtime)
+
+# Fully re-copy the assets directory on each build to avoid having stale files
+# from a previous install.
+set(FLUTTER_ASSET_DIR_NAME "flutter_assets")
+install(CODE "
+  file(REMOVE_RECURSE \"${INSTALL_BUNDLE_DATA_DIR}/${FLUTTER_ASSET_DIR_NAME}\")
+  " COMPONENT Runtime)
+install(DIRECTORY "${PROJECT_BUILD_DIR}/${FLUTTER_ASSET_DIR_NAME}"
+  DESTINATION "${INSTALL_BUNDLE_DATA_DIR}" COMPONENT Runtime)
+
+# Install the AOT library on non-Debug builds only.
+if(NOT CMAKE_BUILD_TYPE MATCHES "Debug")
+  install(FILES "${AOT_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+    COMPONENT Runtime)
+endif()
diff --git a/intro_flutter_gpu/step_11/linux/flutter/CMakeLists.txt b/intro_flutter_gpu/step_11/linux/flutter/CMakeLists.txt
new file mode 100644
index 0000000000..d5bd01648a
--- /dev/null
+++ b/intro_flutter_gpu/step_11/linux/flutter/CMakeLists.txt
@@ -0,0 +1,88 @@
+# This file controls Flutter-level build steps. It should not be edited.
+cmake_minimum_required(VERSION 3.10)
+
+set(EPHEMERAL_DIR "${CMAKE_CURRENT_SOURCE_DIR}/ephemeral")
+
+# Configuration provided via flutter tool.
+include(${EPHEMERAL_DIR}/generated_config.cmake)
+
+# TODO: Move the rest of this into files in ephemeral. See
+# https://github.com/flutter/flutter/issues/57146.
+
+# Serves the same purpose as list(TRANSFORM ... PREPEND ...),
+# which isn't available in 3.10.
+function(list_prepend LIST_NAME PREFIX)
+    set(NEW_LIST "")
+    foreach(element ${${LIST_NAME}})
+        list(APPEND NEW_LIST "${PREFIX}${element}")
+    endforeach(element)
+    set(${LIST_NAME} "${NEW_LIST}" PARENT_SCOPE)
+endfunction()
+
+# === Flutter Library ===
+# System-level dependencies.
+find_package(PkgConfig REQUIRED)
+pkg_check_modules(GTK REQUIRED IMPORTED_TARGET gtk+-3.0)
+pkg_check_modules(GLIB REQUIRED IMPORTED_TARGET glib-2.0)
+pkg_check_modules(GIO REQUIRED IMPORTED_TARGET gio-2.0)
+
+set(FLUTTER_LIBRARY "${EPHEMERAL_DIR}/libflutter_linux_gtk.so")
+
+# Published to parent scope for install step.
+set(FLUTTER_LIBRARY ${FLUTTER_LIBRARY} PARENT_SCOPE)
+set(FLUTTER_ICU_DATA_FILE "${EPHEMERAL_DIR}/icudtl.dat" PARENT_SCOPE)
+set(PROJECT_BUILD_DIR "${PROJECT_DIR}/build/" PARENT_SCOPE)
+set(AOT_LIBRARY "${PROJECT_DIR}/build/lib/libapp.so" PARENT_SCOPE)
+
+list(APPEND FLUTTER_LIBRARY_HEADERS
+  "fl_basic_message_channel.h"
+  "fl_binary_codec.h"
+  "fl_binary_messenger.h"
+  "fl_dart_project.h"
+  "fl_engine.h"
+  "fl_json_message_codec.h"
+  "fl_json_method_codec.h"
+  "fl_message_codec.h"
+  "fl_method_call.h"
+  "fl_method_channel.h"
+  "fl_method_codec.h"
+  "fl_method_response.h"
+  "fl_plugin_registrar.h"
+  "fl_plugin_registry.h"
+  "fl_standard_message_codec.h"
+  "fl_standard_method_codec.h"
+  "fl_string_codec.h"
+  "fl_value.h"
+  "fl_view.h"
+  "flutter_linux.h"
+)
+list_prepend(FLUTTER_LIBRARY_HEADERS "${EPHEMERAL_DIR}/flutter_linux/")
+add_library(flutter INTERFACE)
+target_include_directories(flutter INTERFACE
+  "${EPHEMERAL_DIR}"
+)
+target_link_libraries(flutter INTERFACE "${FLUTTER_LIBRARY}")
+target_link_libraries(flutter INTERFACE
+  PkgConfig::GTK
+  PkgConfig::GLIB
+  PkgConfig::GIO
+)
+add_dependencies(flutter flutter_assemble)
+
+# === Flutter tool backend ===
+# _phony_ is a non-existent file to force this command to run every time,
+# since currently there's no way to get a full input/output list from the
+# flutter tool.
+add_custom_command(
+  OUTPUT ${FLUTTER_LIBRARY} ${FLUTTER_LIBRARY_HEADERS}
+    ${CMAKE_CURRENT_BINARY_DIR}/_phony_
+  COMMAND ${CMAKE_COMMAND} -E env
+    ${FLUTTER_TOOL_ENVIRONMENT}
+    "${FLUTTER_ROOT}/packages/flutter_tools/bin/tool_backend.sh"
+      ${FLUTTER_TARGET_PLATFORM} ${CMAKE_BUILD_TYPE}
+  VERBATIM
+)
+add_custom_target(flutter_assemble DEPENDS
+  "${FLUTTER_LIBRARY}"
+  ${FLUTTER_LIBRARY_HEADERS}
+)
diff --git a/intro_flutter_gpu/step_11/linux/flutter/generated_plugin_registrant.cc b/intro_flutter_gpu/step_11/linux/flutter/generated_plugin_registrant.cc
new file mode 100644
index 0000000000..e71a16d23d
--- /dev/null
+++ b/intro_flutter_gpu/step_11/linux/flutter/generated_plugin_registrant.cc
@@ -0,0 +1,11 @@
+//
+//  Generated file. Do not edit.
+//
+
+// clang-format off
+
+#include "generated_plugin_registrant.h"
+
+
+void fl_register_plugins(FlPluginRegistry* registry) {
+}
diff --git a/intro_flutter_gpu/step_11/linux/flutter/generated_plugin_registrant.h b/intro_flutter_gpu/step_11/linux/flutter/generated_plugin_registrant.h
new file mode 100644
index 0000000000..e0f0a47bc0
--- /dev/null
+++ b/intro_flutter_gpu/step_11/linux/flutter/generated_plugin_registrant.h
@@ -0,0 +1,15 @@
+//
+//  Generated file. Do not edit.
+//
+
+// clang-format off
+
+#ifndef GENERATED_PLUGIN_REGISTRANT_
+#define GENERATED_PLUGIN_REGISTRANT_
+
+#include <flutter_linux/flutter_linux.h>
+
+// Registers Flutter plugins.
+void fl_register_plugins(FlPluginRegistry* registry);
+
+#endif  // GENERATED_PLUGIN_REGISTRANT_
diff --git a/intro_flutter_gpu/step_11/linux/flutter/generated_plugins.cmake b/intro_flutter_gpu/step_11/linux/flutter/generated_plugins.cmake
new file mode 100644
index 0000000000..2e1de87a7e
--- /dev/null
+++ b/intro_flutter_gpu/step_11/linux/flutter/generated_plugins.cmake
@@ -0,0 +1,23 @@
+#
+# Generated file, do not edit.
+#
+
+list(APPEND FLUTTER_PLUGIN_LIST
+)
+
+list(APPEND FLUTTER_FFI_PLUGIN_LIST
+)
+
+set(PLUGIN_BUNDLED_LIBRARIES)
+
+foreach(plugin ${FLUTTER_PLUGIN_LIST})
+  add_subdirectory(flutter/ephemeral/.plugin_symlinks/${plugin}/linux plugins/${plugin})
+  target_link_libraries(${BINARY_NAME} PRIVATE ${plugin}_plugin)
+  list(APPEND PLUGIN_BUNDLED_LIBRARIES $<TARGET_FILE:${plugin}_plugin>)
+  list(APPEND PLUGIN_BUNDLED_LIBRARIES ${${plugin}_bundled_libraries})
+endforeach(plugin)
+
+foreach(ffi_plugin ${FLUTTER_FFI_PLUGIN_LIST})
+  add_subdirectory(flutter/ephemeral/.plugin_symlinks/${ffi_plugin}/linux plugins/${ffi_plugin})
+  list(APPEND PLUGIN_BUNDLED_LIBRARIES ${${ffi_plugin}_bundled_libraries})
+endforeach(ffi_plugin)
diff --git a/intro_flutter_gpu/step_11/linux/runner/CMakeLists.txt b/intro_flutter_gpu/step_11/linux/runner/CMakeLists.txt
new file mode 100644
index 0000000000..e97dabc702
--- /dev/null
+++ b/intro_flutter_gpu/step_11/linux/runner/CMakeLists.txt
@@ -0,0 +1,26 @@
+cmake_minimum_required(VERSION 3.13)
+project(runner LANGUAGES CXX)
+
+# Define the application target. To change its name, change BINARY_NAME in the
+# top-level CMakeLists.txt, not the value here, or `flutter run` will no longer
+# work.
+#
+# Any new source files that you add to the application should be added here.
+add_executable(${BINARY_NAME}
+  "main.cc"
+  "my_application.cc"
+  "${FLUTTER_MANAGED_DIR}/generated_plugin_registrant.cc"
+)
+
+# Apply the standard set of build settings. This can be removed for applications
+# that need different build settings.
+apply_standard_settings(${BINARY_NAME})
+
+# Add preprocessor definitions for the application ID.
+add_definitions(-DAPPLICATION_ID="${APPLICATION_ID}")
+
+# Add dependency libraries. Add any application-specific dependencies here.
+target_link_libraries(${BINARY_NAME} PRIVATE flutter)
+target_link_libraries(${BINARY_NAME} PRIVATE PkgConfig::GTK)
+
+target_include_directories(${BINARY_NAME} PRIVATE "${CMAKE_SOURCE_DIR}")
diff --git a/intro_flutter_gpu/step_11/linux/runner/main.cc b/intro_flutter_gpu/step_11/linux/runner/main.cc
new file mode 100644
index 0000000000..e7c5c54370
--- /dev/null
+++ b/intro_flutter_gpu/step_11/linux/runner/main.cc
@@ -0,0 +1,6 @@
+#include "my_application.h"
+
+int main(int argc, char** argv) {
+  g_autoptr(MyApplication) app = my_application_new();
+  return g_application_run(G_APPLICATION(app), argc, argv);
+}
diff --git a/intro_flutter_gpu/step_11/linux/runner/my_application.cc b/intro_flutter_gpu/step_11/linux/runner/my_application.cc
new file mode 100644
index 0000000000..6c04c01067
--- /dev/null
+++ b/intro_flutter_gpu/step_11/linux/runner/my_application.cc
@@ -0,0 +1,130 @@
+#include "my_application.h"
+
+#include <flutter_linux/flutter_linux.h>
+#ifdef GDK_WINDOWING_X11
+#include <gdk/gdkx.h>
+#endif
+
+#include "flutter/generated_plugin_registrant.h"
+
+struct _MyApplication {
+  GtkApplication parent_instance;
+  char** dart_entrypoint_arguments;
+};
+
+G_DEFINE_TYPE(MyApplication, my_application, GTK_TYPE_APPLICATION)
+
+// Implements GApplication::activate.
+static void my_application_activate(GApplication* application) {
+  MyApplication* self = MY_APPLICATION(application);
+  GtkWindow* window =
+      GTK_WINDOW(gtk_application_window_new(GTK_APPLICATION(application)));
+
+  // Use a header bar when running in GNOME as this is the common style used
+  // by applications and is the setup most users will be using (e.g. Ubuntu
+  // desktop).
+  // If running on X and not using GNOME then just use a traditional title bar
+  // in case the window manager does more exotic layout, e.g. tiling.
+  // If running on Wayland assume the header bar will work (may need changing
+  // if future cases occur).
+  gboolean use_header_bar = TRUE;
+#ifdef GDK_WINDOWING_X11
+  GdkScreen* screen = gtk_window_get_screen(window);
+  if (GDK_IS_X11_SCREEN(screen)) {
+    const gchar* wm_name = gdk_x11_screen_get_window_manager_name(screen);
+    if (g_strcmp0(wm_name, "GNOME Shell") != 0) {
+      use_header_bar = FALSE;
+    }
+  }
+#endif
+  if (use_header_bar) {
+    GtkHeaderBar* header_bar = GTK_HEADER_BAR(gtk_header_bar_new());
+    gtk_widget_show(GTK_WIDGET(header_bar));
+    gtk_header_bar_set_title(header_bar, "intro_flutter_gpu");
+    gtk_header_bar_set_show_close_button(header_bar, TRUE);
+    gtk_window_set_titlebar(window, GTK_WIDGET(header_bar));
+  } else {
+    gtk_window_set_title(window, "intro_flutter_gpu");
+  }
+
+  gtk_window_set_default_size(window, 1280, 720);
+  gtk_widget_show(GTK_WIDGET(window));
+
+  g_autoptr(FlDartProject) project = fl_dart_project_new();
+  fl_dart_project_set_dart_entrypoint_arguments(project, self->dart_entrypoint_arguments);
+
+  FlView* view = fl_view_new(project);
+  gtk_widget_show(GTK_WIDGET(view));
+  gtk_container_add(GTK_CONTAINER(window), GTK_WIDGET(view));
+
+  fl_register_plugins(FL_PLUGIN_REGISTRY(view));
+
+  gtk_widget_grab_focus(GTK_WIDGET(view));
+}
+
+// Implements GApplication::local_command_line.
+static gboolean my_application_local_command_line(GApplication* application, gchar*** arguments, int* exit_status) {
+  MyApplication* self = MY_APPLICATION(application);
+  // Strip out the first argument as it is the binary name.
+  self->dart_entrypoint_arguments = g_strdupv(*arguments + 1);
+
+  g_autoptr(GError) error = nullptr;
+  if (!g_application_register(application, nullptr, &error)) {
+     g_warning("Failed to register: %s", error->message);
+     *exit_status = 1;
+     return TRUE;
+  }
+
+  g_application_activate(application);
+  *exit_status = 0;
+
+  return TRUE;
+}
+
+// Implements GApplication::startup.
+static void my_application_startup(GApplication* application) {
+  //MyApplication* self = MY_APPLICATION(object);
+
+  // Perform any actions required at application startup.
+
+  G_APPLICATION_CLASS(my_application_parent_class)->startup(application);
+}
+
+// Implements GApplication::shutdown.
+static void my_application_shutdown(GApplication* application) {
+  //MyApplication* self = MY_APPLICATION(object);
+
+  // Perform any actions required at application shutdown.
+
+  G_APPLICATION_CLASS(my_application_parent_class)->shutdown(application);
+}
+
+// Implements GObject::dispose.
+static void my_application_dispose(GObject* object) {
+  MyApplication* self = MY_APPLICATION(object);
+  g_clear_pointer(&self->dart_entrypoint_arguments, g_strfreev);
+  G_OBJECT_CLASS(my_application_parent_class)->dispose(object);
+}
+
+static void my_application_class_init(MyApplicationClass* klass) {
+  G_APPLICATION_CLASS(klass)->activate = my_application_activate;
+  G_APPLICATION_CLASS(klass)->local_command_line = my_application_local_command_line;
+  G_APPLICATION_CLASS(klass)->startup = my_application_startup;
+  G_APPLICATION_CLASS(klass)->shutdown = my_application_shutdown;
+  G_OBJECT_CLASS(klass)->dispose = my_application_dispose;
+}
+
+static void my_application_init(MyApplication* self) {}
+
+MyApplication* my_application_new() {
+  // Set the program name to the application ID, which helps various systems
+  // like GTK and desktop environments map this running application to its
+  // corresponding .desktop file. This ensures better integration by allowing
+  // the application to be recognized beyond its binary name.
+  g_set_prgname(APPLICATION_ID);
+
+  return MY_APPLICATION(g_object_new(my_application_get_type(),
+                                     "application-id", APPLICATION_ID,
+                                     "flags", G_APPLICATION_NON_UNIQUE,
+                                     nullptr));
+}
diff --git a/intro_flutter_gpu/step_11/linux/runner/my_application.h b/intro_flutter_gpu/step_11/linux/runner/my_application.h
new file mode 100644
index 0000000000..72271d5e41
--- /dev/null
+++ b/intro_flutter_gpu/step_11/linux/runner/my_application.h
@@ -0,0 +1,18 @@
+#ifndef FLUTTER_MY_APPLICATION_H_
+#define FLUTTER_MY_APPLICATION_H_
+
+#include <gtk/gtk.h>
+
+G_DECLARE_FINAL_TYPE(MyApplication, my_application, MY, APPLICATION,
+                     GtkApplication)
+
+/**
+ * my_application_new:
+ *
+ * Creates a new Flutter-based application.
+ *
+ * Returns: a new #MyApplication.
+ */
+MyApplication* my_application_new();
+
+#endif  // FLUTTER_MY_APPLICATION_H_
diff --git a/intro_flutter_gpu/step_11/macos/Runner/Configs/AppInfo.xcconfig b/intro_flutter_gpu/step_11/macos/Runner/Configs/AppInfo.xcconfig
index 87348d3f8a..e4fb8e9e62 100644
--- a/intro_flutter_gpu/step_11/macos/Runner/Configs/AppInfo.xcconfig
+++ b/intro_flutter_gpu/step_11/macos/Runner/Configs/AppInfo.xcconfig
@@ -11,4 +11,4 @@ PRODUCT_NAME = intro_flutter_gpu
 PRODUCT_BUNDLE_IDENTIFIER = com.example.introFlutterGpu
 
 // The copyright displayed in application information
-PRODUCT_COPYRIGHT = Copyright © 2024 com.example. All rights reserved.
+PRODUCT_COPYRIGHT = Copyright © 2025 com.example. All rights reserved.
diff --git a/intro_flutter_gpu/step_11/windows/runner/Runner.rc b/intro_flutter_gpu/step_11/windows/runner/Runner.rc
index a76c0ec0fc..26e1dbe547 100644
--- a/intro_flutter_gpu/step_11/windows/runner/Runner.rc
+++ b/intro_flutter_gpu/step_11/windows/runner/Runner.rc
@@ -93,7 +93,7 @@ BEGIN
             VALUE "FileDescription", "intro_flutter_gpu" "\0"
             VALUE "FileVersion", VERSION_AS_STRING "\0"
             VALUE "InternalName", "intro_flutter_gpu" "\0"
-            VALUE "LegalCopyright", "Copyright (C) 2024 com.example. All rights reserved." "\0"
+            VALUE "LegalCopyright", "Copyright (C) 2025 com.example. All rights reserved." "\0"
             VALUE "OriginalFilename", "intro_flutter_gpu.exe" "\0"
             VALUE "ProductName", "intro_flutter_gpu" "\0"
             VALUE "ProductVersion", VERSION_AS_STRING "\0"
diff --git a/intro_flutter_gpu/step_12/android/.gitignore b/intro_flutter_gpu/step_12/android/.gitignore
index 55afd919c6..be3943c96d 100644
--- a/intro_flutter_gpu/step_12/android/.gitignore
+++ b/intro_flutter_gpu/step_12/android/.gitignore
@@ -5,6 +5,7 @@ gradle-wrapper.jar
 /gradlew.bat
 /local.properties
 GeneratedPluginRegistrant.java
+.cxx/
 
 # Remember to never publicly share your keystore.
 # See https://flutter.dev/to/reference-keystore
diff --git a/intro_flutter_gpu/step_12/android/app/build.gradle.kts b/intro_flutter_gpu/step_12/android/app/build.gradle.kts
index 857326fb7b..ba03f47e22 100644
--- a/intro_flutter_gpu/step_12/android/app/build.gradle.kts
+++ b/intro_flutter_gpu/step_12/android/app/build.gradle.kts
@@ -11,12 +11,12 @@ android {
     ndkVersion = flutter.ndkVersion
 
     compileOptions {
-        sourceCompatibility = JavaVersion.VERSION_1_8
-        targetCompatibility = JavaVersion.VERSION_1_8
+        sourceCompatibility = JavaVersion.VERSION_11
+        targetCompatibility = JavaVersion.VERSION_11
     }
 
     kotlinOptions {
-        jvmTarget = JavaVersion.VERSION_1_8.toString()
+        jvmTarget = JavaVersion.VERSION_11.toString()
     }
 
     defaultConfig {
diff --git a/intro_flutter_gpu/step_12/android/app/src/main/kotlin/com/example/intro_flutter_gpu/MainActivity.kt b/intro_flutter_gpu/step_12/android/app/src/main/kotlin/com/example/intro_flutter_gpu/MainActivity.kt
index 28c6a72dea..309b877fe4 100644
--- a/intro_flutter_gpu/step_12/android/app/src/main/kotlin/com/example/intro_flutter_gpu/MainActivity.kt
+++ b/intro_flutter_gpu/step_12/android/app/src/main/kotlin/com/example/intro_flutter_gpu/MainActivity.kt
@@ -2,4 +2,4 @@ package com.example.intro_flutter_gpu
 
 import io.flutter.embedding.android.FlutterActivity
 
-class MainActivity: FlutterActivity()
+class MainActivity : FlutterActivity()
diff --git a/intro_flutter_gpu/step_12/linux/.gitignore b/intro_flutter_gpu/step_12/linux/.gitignore
new file mode 100644
index 0000000000..d3896c9844
--- /dev/null
+++ b/intro_flutter_gpu/step_12/linux/.gitignore
@@ -0,0 +1 @@
+flutter/ephemeral
diff --git a/intro_flutter_gpu/step_12/linux/CMakeLists.txt b/intro_flutter_gpu/step_12/linux/CMakeLists.txt
new file mode 100644
index 0000000000..a487a7465e
--- /dev/null
+++ b/intro_flutter_gpu/step_12/linux/CMakeLists.txt
@@ -0,0 +1,128 @@
+# Project-level configuration.
+cmake_minimum_required(VERSION 3.13)
+project(runner LANGUAGES CXX)
+
+# The name of the executable created for the application. Change this to change
+# the on-disk name of your application.
+set(BINARY_NAME "intro_flutter_gpu")
+# The unique GTK application identifier for this application. See:
+# https://wiki.gnome.org/HowDoI/ChooseApplicationID
+set(APPLICATION_ID "com.example.intro_flutter_gpu")
+
+# Explicitly opt in to modern CMake behaviors to avoid warnings with recent
+# versions of CMake.
+cmake_policy(SET CMP0063 NEW)
+
+# Load bundled libraries from the lib/ directory relative to the binary.
+set(CMAKE_INSTALL_RPATH "$ORIGIN/lib")
+
+# Root filesystem for cross-building.
+if(FLUTTER_TARGET_PLATFORM_SYSROOT)
+  set(CMAKE_SYSROOT ${FLUTTER_TARGET_PLATFORM_SYSROOT})
+  set(CMAKE_FIND_ROOT_PATH ${CMAKE_SYSROOT})
+  set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+  set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
+  set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+  set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+endif()
+
+# Define build configuration options.
+if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
+  set(CMAKE_BUILD_TYPE "Debug" CACHE
+    STRING "Flutter build mode" FORCE)
+  set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS
+    "Debug" "Profile" "Release")
+endif()
+
+# Compilation settings that should be applied to most targets.
+#
+# Be cautious about adding new options here, as plugins use this function by
+# default. In most cases, you should add new options to specific targets instead
+# of modifying this function.
+function(APPLY_STANDARD_SETTINGS TARGET)
+  target_compile_features(${TARGET} PUBLIC cxx_std_14)
+  target_compile_options(${TARGET} PRIVATE -Wall -Werror)
+  target_compile_options(${TARGET} PRIVATE "$<$<NOT:$<CONFIG:Debug>>:-O3>")
+  target_compile_definitions(${TARGET} PRIVATE "$<$<NOT:$<CONFIG:Debug>>:NDEBUG>")
+endfunction()
+
+# Flutter library and tool build rules.
+set(FLUTTER_MANAGED_DIR "${CMAKE_CURRENT_SOURCE_DIR}/flutter")
+add_subdirectory(${FLUTTER_MANAGED_DIR})
+
+# System-level dependencies.
+find_package(PkgConfig REQUIRED)
+pkg_check_modules(GTK REQUIRED IMPORTED_TARGET gtk+-3.0)
+
+# Application build; see runner/CMakeLists.txt.
+add_subdirectory("runner")
+
+# Run the Flutter tool portions of the build. This must not be removed.
+add_dependencies(${BINARY_NAME} flutter_assemble)
+
+# Only the install-generated bundle's copy of the executable will launch
+# correctly, since the resources must in the right relative locations. To avoid
+# people trying to run the unbundled copy, put it in a subdirectory instead of
+# the default top-level location.
+set_target_properties(${BINARY_NAME}
+  PROPERTIES
+  RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/intermediates_do_not_run"
+)
+
+
+# Generated plugin build rules, which manage building the plugins and adding
+# them to the application.
+include(flutter/generated_plugins.cmake)
+
+
+# === Installation ===
+# By default, "installing" just makes a relocatable bundle in the build
+# directory.
+set(BUILD_BUNDLE_DIR "${PROJECT_BINARY_DIR}/bundle")
+if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
+  set(CMAKE_INSTALL_PREFIX "${BUILD_BUNDLE_DIR}" CACHE PATH "..." FORCE)
+endif()
+
+# Start with a clean build bundle directory every time.
+install(CODE "
+  file(REMOVE_RECURSE \"${BUILD_BUNDLE_DIR}/\")
+  " COMPONENT Runtime)
+
+set(INSTALL_BUNDLE_DATA_DIR "${CMAKE_INSTALL_PREFIX}/data")
+set(INSTALL_BUNDLE_LIB_DIR "${CMAKE_INSTALL_PREFIX}/lib")
+
+install(TARGETS ${BINARY_NAME} RUNTIME DESTINATION "${CMAKE_INSTALL_PREFIX}"
+  COMPONENT Runtime)
+
+install(FILES "${FLUTTER_ICU_DATA_FILE}" DESTINATION "${INSTALL_BUNDLE_DATA_DIR}"
+  COMPONENT Runtime)
+
+install(FILES "${FLUTTER_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+  COMPONENT Runtime)
+
+foreach(bundled_library ${PLUGIN_BUNDLED_LIBRARIES})
+  install(FILES "${bundled_library}"
+    DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+    COMPONENT Runtime)
+endforeach(bundled_library)
+
+# Copy the native assets provided by the build.dart from all packages.
+set(NATIVE_ASSETS_DIR "${PROJECT_BUILD_DIR}native_assets/linux/")
+install(DIRECTORY "${NATIVE_ASSETS_DIR}"
+   DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+   COMPONENT Runtime)
+
+# Fully re-copy the assets directory on each build to avoid having stale files
+# from a previous install.
+set(FLUTTER_ASSET_DIR_NAME "flutter_assets")
+install(CODE "
+  file(REMOVE_RECURSE \"${INSTALL_BUNDLE_DATA_DIR}/${FLUTTER_ASSET_DIR_NAME}\")
+  " COMPONENT Runtime)
+install(DIRECTORY "${PROJECT_BUILD_DIR}/${FLUTTER_ASSET_DIR_NAME}"
+  DESTINATION "${INSTALL_BUNDLE_DATA_DIR}" COMPONENT Runtime)
+
+# Install the AOT library on non-Debug builds only.
+if(NOT CMAKE_BUILD_TYPE MATCHES "Debug")
+  install(FILES "${AOT_LIBRARY}" DESTINATION "${INSTALL_BUNDLE_LIB_DIR}"
+    COMPONENT Runtime)
+endif()
diff --git a/intro_flutter_gpu/step_12/linux/flutter/CMakeLists.txt b/intro_flutter_gpu/step_12/linux/flutter/CMakeLists.txt
new file mode 100644
index 0000000000..d5bd01648a
--- /dev/null
+++ b/intro_flutter_gpu/step_12/linux/flutter/CMakeLists.txt
@@ -0,0 +1,88 @@
+# This file controls Flutter-level build steps. It should not be edited.
+cmake_minimum_required(VERSION 3.10)
+
+set(EPHEMERAL_DIR "${CMAKE_CURRENT_SOURCE_DIR}/ephemeral")
+
+# Configuration provided via flutter tool.
+include(${EPHEMERAL_DIR}/generated_config.cmake)
+
+# TODO: Move the rest of this into files in ephemeral. See
+# https://github.com/flutter/flutter/issues/57146.
+
+# Serves the same purpose as list(TRANSFORM ... PREPEND ...),
+# which isn't available in 3.10.
+function(list_prepend LIST_NAME PREFIX)
+    set(NEW_LIST "")
+    foreach(element ${${LIST_NAME}})
+        list(APPEND NEW_LIST "${PREFIX}${element}")
+    endforeach(element)
+    set(${LIST_NAME} "${NEW_LIST}" PARENT_SCOPE)
+endfunction()
+
+# === Flutter Library ===
+# System-level dependencies.
+find_package(PkgConfig REQUIRED)
+pkg_check_modules(GTK REQUIRED IMPORTED_TARGET gtk+-3.0)
+pkg_check_modules(GLIB REQUIRED IMPORTED_TARGET glib-2.0)
+pkg_check_modules(GIO REQUIRED IMPORTED_TARGET gio-2.0)
+
+set(FLUTTER_LIBRARY "${EPHEMERAL_DIR}/libflutter_linux_gtk.so")
+
+# Published to parent scope for install step.
+set(FLUTTER_LIBRARY ${FLUTTER_LIBRARY} PARENT_SCOPE)
+set(FLUTTER_ICU_DATA_FILE "${EPHEMERAL_DIR}/icudtl.dat" PARENT_SCOPE)
+set(PROJECT_BUILD_DIR "${PROJECT_DIR}/build/" PARENT_SCOPE)
+set(AOT_LIBRARY "${PROJECT_DIR}/build/lib/libapp.so" PARENT_SCOPE)
+
+list(APPEND FLUTTER_LIBRARY_HEADERS
+  "fl_basic_message_channel.h"
+  "fl_binary_codec.h"
+  "fl_binary_messenger.h"
+  "fl_dart_project.h"
+  "fl_engine.h"
+  "fl_json_message_codec.h"
+  "fl_json_method_codec.h"
+  "fl_message_codec.h"
+  "fl_method_call.h"
+  "fl_method_channel.h"
+  "fl_method_codec.h"
+  "fl_method_response.h"
+  "fl_plugin_registrar.h"
+  "fl_plugin_registry.h"
+  "fl_standard_message_codec.h"
+  "fl_standard_method_codec.h"
+  "fl_string_codec.h"
+  "fl_value.h"
+  "fl_view.h"
+  "flutter_linux.h"
+)
+list_prepend(FLUTTER_LIBRARY_HEADERS "${EPHEMERAL_DIR}/flutter_linux/")
+add_library(flutter INTERFACE)
+target_include_directories(flutter INTERFACE
+  "${EPHEMERAL_DIR}"
+)
+target_link_libraries(flutter INTERFACE "${FLUTTER_LIBRARY}")
+target_link_libraries(flutter INTERFACE
+  PkgConfig::GTK
+  PkgConfig::GLIB
+  PkgConfig::GIO
+)
+add_dependencies(flutter flutter_assemble)
+
+# === Flutter tool backend ===
+# _phony_ is a non-existent file to force this command to run every time,
+# since currently there's no way to get a full input/output list from the
+# flutter tool.
+add_custom_command(
+  OUTPUT ${FLUTTER_LIBRARY} ${FLUTTER_LIBRARY_HEADERS}
+    ${CMAKE_CURRENT_BINARY_DIR}/_phony_
+  COMMAND ${CMAKE_COMMAND} -E env
+    ${FLUTTER_TOOL_ENVIRONMENT}
+    "${FLUTTER_ROOT}/packages/flutter_tools/bin/tool_backend.sh"
+      ${FLUTTER_TARGET_PLATFORM} ${CMAKE_BUILD_TYPE}
+  VERBATIM
+)
+add_custom_target(flutter_assemble DEPENDS
+  "${FLUTTER_LIBRARY}"
+  ${FLUTTER_LIBRARY_HEADERS}
+)
diff --git a/intro_flutter_gpu/step_12/linux/flutter/generated_plugin_registrant.cc b/intro_flutter_gpu/step_12/linux/flutter/generated_plugin_registrant.cc
new file mode 100644
index 0000000000..e71a16d23d
--- /dev/null
+++ b/intro_flutter_gpu/step_12/linux/flutter/generated_plugin_registrant.cc
@@ -0,0 +1,11 @@
+//
+//  Generated file. Do not edit.
+//
+
+// clang-format off
+
+#include "generated_plugin_registrant.h"
+
+
+void fl_register_plugins(FlPluginRegistry* registry) {
+}
diff --git a/intro_flutter_gpu/step_12/linux/flutter/generated_plugin_registrant.h b/intro_flutter_gpu/step_12/linux/flutter/generated_plugin_registrant.h
new file mode 100644
index 0000000000..e0f0a47bc0
--- /dev/null
+++ b/intro_flutter_gpu/step_12/linux/flutter/generated_plugin_registrant.h
@@ -0,0 +1,15 @@
+//
+//  Generated file. Do not edit.
+//
+
+// clang-format off
+
+#ifndef GENERATED_PLUGIN_REGISTRANT_
+#define GENERATED_PLUGIN_REGISTRANT_
+
+#include <flutter_linux/flutter_linux.h>
+
+// Registers Flutter plugins.
+void fl_register_plugins(FlPluginRegistry* registry);
+
+#endif  // GENERATED_PLUGIN_REGISTRANT_
diff --git a/intro_flutter_gpu/step_12/linux/flutter/generated_plugins.cmake b/intro_flutter_gpu/step_12/linux/flutter/generated_plugins.cmake
new file mode 100644
index 0000000000..2e1de87a7e
--- /dev/null
+++ b/intro_flutter_gpu/step_12/linux/flutter/generated_plugins.cmake
@@ -0,0 +1,23 @@
+#
+# Generated file, do not edit.
+#
+
+list(APPEND FLUTTER_PLUGIN_LIST
+)
+
+list(APPEND FLUTTER_FFI_PLUGIN_LIST
+)
+
+set(PLUGIN_BUNDLED_LIBRARIES)
+
+foreach(plugin ${FLUTTER_PLUGIN_LIST})
+  add_subdirectory(flutter/ephemeral/.plugin_symlinks/${plugin}/linux plugins/${plugin})
+  target_link_libraries(${BINARY_NAME} PRIVATE ${plugin}_plugin)
+  list(APPEND PLUGIN_BUNDLED_LIBRARIES $<TARGET_FILE:${plugin}_plugin>)
+  list(APPEND PLUGIN_BUNDLED_LIBRARIES ${${plugin}_bundled_libraries})
+endforeach(plugin)
+
+foreach(ffi_plugin ${FLUTTER_FFI_PLUGIN_LIST})
+  add_subdirectory(flutter/ephemeral/.plugin_symlinks/${ffi_plugin}/linux plugins/${ffi_plugin})
+  list(APPEND PLUGIN_BUNDLED_LIBRARIES ${${ffi_plugin}_bundled_libraries})
+endforeach(ffi_plugin)
diff --git a/intro_flutter_gpu/step_12/linux/runner/CMakeLists.txt b/intro_flutter_gpu/step_12/linux/runner/CMakeLists.txt
new file mode 100644
index 0000000000..e97dabc702
--- /dev/null
+++ b/intro_flutter_gpu/step_12/linux/runner/CMakeLists.txt
@@ -0,0 +1,26 @@
+cmake_minimum_required(VERSION 3.13)
+project(runner LANGUAGES CXX)
+
+# Define the application target. To change its name, change BINARY_NAME in the
+# top-level CMakeLists.txt, not the value here, or `flutter run` will no longer
+# work.
+#
+# Any new source files that you add to the application should be added here.
+add_executable(${BINARY_NAME}
+  "main.cc"
+  "my_application.cc"
+  "${FLUTTER_MANAGED_DIR}/generated_plugin_registrant.cc"
+)
+
+# Apply the standard set of build settings. This can be removed for applications
+# that need different build settings.
+apply_standard_settings(${BINARY_NAME})
+
+# Add preprocessor definitions for the application ID.
+add_definitions(-DAPPLICATION_ID="${APPLICATION_ID}")
+
+# Add dependency libraries. Add any application-specific dependencies here.
+target_link_libraries(${BINARY_NAME} PRIVATE flutter)
+target_link_libraries(${BINARY_NAME} PRIVATE PkgConfig::GTK)
+
+target_include_directories(${BINARY_NAME} PRIVATE "${CMAKE_SOURCE_DIR}")
diff --git a/intro_flutter_gpu/step_12/linux/runner/main.cc b/intro_flutter_gpu/step_12/linux/runner/main.cc
new file mode 100644
index 0000000000..e7c5c54370
--- /dev/null
+++ b/intro_flutter_gpu/step_12/linux/runner/main.cc
@@ -0,0 +1,6 @@
+#include "my_application.h"
+
+int main(int argc, char** argv) {
+  g_autoptr(MyApplication) app = my_application_new();
+  return g_application_run(G_APPLICATION(app), argc, argv);
+}
diff --git a/intro_flutter_gpu/step_12/linux/runner/my_application.cc b/intro_flutter_gpu/step_12/linux/runner/my_application.cc
new file mode 100644
index 0000000000..6c04c01067
--- /dev/null
+++ b/intro_flutter_gpu/step_12/linux/runner/my_application.cc
@@ -0,0 +1,130 @@
+#include "my_application.h"
+
+#include <flutter_linux/flutter_linux.h>
+#ifdef GDK_WINDOWING_X11
+#include <gdk/gdkx.h>
+#endif
+
+#include "flutter/generated_plugin_registrant.h"
+
+struct _MyApplication {
+  GtkApplication parent_instance;
+  char** dart_entrypoint_arguments;
+};
+
+G_DEFINE_TYPE(MyApplication, my_application, GTK_TYPE_APPLICATION)
+
+// Implements GApplication::activate.
+static void my_application_activate(GApplication* application) {
+  MyApplication* self = MY_APPLICATION(application);
+  GtkWindow* window =
+      GTK_WINDOW(gtk_application_window_new(GTK_APPLICATION(application)));
+
+  // Use a header bar when running in GNOME as this is the common style used
+  // by applications and is the setup most users will be using (e.g. Ubuntu
+  // desktop).
+  // If running on X and not using GNOME then just use a traditional title bar
+  // in case the window manager does more exotic layout, e.g. tiling.
+  // If running on Wayland assume the header bar will work (may need changing
+  // if future cases occur).
+  gboolean use_header_bar = TRUE;
+#ifdef GDK_WINDOWING_X11
+  GdkScreen* screen = gtk_window_get_screen(window);
+  if (GDK_IS_X11_SCREEN(screen)) {
+    const gchar* wm_name = gdk_x11_screen_get_window_manager_name(screen);
+    if (g_strcmp0(wm_name, "GNOME Shell") != 0) {
+      use_header_bar = FALSE;
+    }
+  }
+#endif
+  if (use_header_bar) {
+    GtkHeaderBar* header_bar = GTK_HEADER_BAR(gtk_header_bar_new());
+    gtk_widget_show(GTK_WIDGET(header_bar));
+    gtk_header_bar_set_title(header_bar, "intro_flutter_gpu");
+    gtk_header_bar_set_show_close_button(header_bar, TRUE);
+    gtk_window_set_titlebar(window, GTK_WIDGET(header_bar));
+  } else {
+    gtk_window_set_title(window, "intro_flutter_gpu");
+  }
+
+  gtk_window_set_default_size(window, 1280, 720);
+  gtk_widget_show(GTK_WIDGET(window));
+
+  g_autoptr(FlDartProject) project = fl_dart_project_new();
+  fl_dart_project_set_dart_entrypoint_arguments(project, self->dart_entrypoint_arguments);
+
+  FlView* view = fl_view_new(project);
+  gtk_widget_show(GTK_WIDGET(view));
+  gtk_container_add(GTK_CONTAINER(window), GTK_WIDGET(view));
+
+  fl_register_plugins(FL_PLUGIN_REGISTRY(view));
+
+  gtk_widget_grab_focus(GTK_WIDGET(view));
+}
+
+// Implements GApplication::local_command_line.
+static gboolean my_application_local_command_line(GApplication* application, gchar*** arguments, int* exit_status) {
+  MyApplication* self = MY_APPLICATION(application);
+  // Strip out the first argument as it is the binary name.
+  self->dart_entrypoint_arguments = g_strdupv(*arguments + 1);
+
+  g_autoptr(GError) error = nullptr;
+  if (!g_application_register(application, nullptr, &error)) {
+     g_warning("Failed to register: %s", error->message);
+     *exit_status = 1;
+     return TRUE;
+  }
+
+  g_application_activate(application);
+  *exit_status = 0;
+
+  return TRUE;
+}
+
+// Implements GApplication::startup.
+static void my_application_startup(GApplication* application) {
+  //MyApplication* self = MY_APPLICATION(object);
+
+  // Perform any actions required at application startup.
+
+  G_APPLICATION_CLASS(my_application_parent_class)->startup(application);
+}
+
+// Implements GApplication::shutdown.
+static void my_application_shutdown(GApplication* application) {
+  //MyApplication* self = MY_APPLICATION(object);
+
+  // Perform any actions required at application shutdown.
+
+  G_APPLICATION_CLASS(my_application_parent_class)->shutdown(application);
+}
+
+// Implements GObject::dispose.
+static void my_application_dispose(GObject* object) {
+  MyApplication* self = MY_APPLICATION(object);
+  g_clear_pointer(&self->dart_entrypoint_arguments, g_strfreev);
+  G_OBJECT_CLASS(my_application_parent_class)->dispose(object);
+}
+
+static void my_application_class_init(MyApplicationClass* klass) {
+  G_APPLICATION_CLASS(klass)->activate = my_application_activate;
+  G_APPLICATION_CLASS(klass)->local_command_line = my_application_local_command_line;
+  G_APPLICATION_CLASS(klass)->startup = my_application_startup;
+  G_APPLICATION_CLASS(klass)->shutdown = my_application_shutdown;
+  G_OBJECT_CLASS(klass)->dispose = my_application_dispose;
+}
+
+static void my_application_init(MyApplication* self) {}
+
+MyApplication* my_application_new() {
+  // Set the program name to the application ID, which helps various systems
+  // like GTK and desktop environments map this running application to its
+  // corresponding .desktop file. This ensures better integration by allowing
+  // the application to be recognized beyond its binary name.
+  g_set_prgname(APPLICATION_ID);
+
+  return MY_APPLICATION(g_object_new(my_application_get_type(),
+                                     "application-id", APPLICATION_ID,
+                                     "flags", G_APPLICATION_NON_UNIQUE,
+                                     nullptr));
+}
diff --git a/intro_flutter_gpu/step_12/linux/runner/my_application.h b/intro_flutter_gpu/step_12/linux/runner/my_application.h
new file mode 100644
index 0000000000..72271d5e41
--- /dev/null
+++ b/intro_flutter_gpu/step_12/linux/runner/my_application.h
@@ -0,0 +1,18 @@
+#ifndef FLUTTER_MY_APPLICATION_H_
+#define FLUTTER_MY_APPLICATION_H_
+
+#include <gtk/gtk.h>
+
+G_DECLARE_FINAL_TYPE(MyApplication, my_application, MY, APPLICATION,
+                     GtkApplication)
+
+/**
+ * my_application_new:
+ *
+ * Creates a new Flutter-based application.
+ *
+ * Returns: a new #MyApplication.
+ */
+MyApplication* my_application_new();
+
+#endif  // FLUTTER_MY_APPLICATION_H_
diff --git a/intro_flutter_gpu/step_12/macos/Runner/Configs/AppInfo.xcconfig b/intro_flutter_gpu/step_12/macos/Runner/Configs/AppInfo.xcconfig
index 87348d3f8a..e4fb8e9e62 100644
--- a/intro_flutter_gpu/step_12/macos/Runner/Configs/AppInfo.xcconfig
+++ b/intro_flutter_gpu/step_12/macos/Runner/Configs/AppInfo.xcconfig
@@ -11,4 +11,4 @@ PRODUCT_NAME = intro_flutter_gpu
 PRODUCT_BUNDLE_IDENTIFIER = com.example.introFlutterGpu
 
 // The copyright displayed in application information
-PRODUCT_COPYRIGHT = Copyright © 2024 com.example. All rights reserved.
+PRODUCT_COPYRIGHT = Copyright © 2025 com.example. All rights reserved.
diff --git a/intro_flutter_gpu/step_12/windows/runner/Runner.rc b/intro_flutter_gpu/step_12/windows/runner/Runner.rc
index a76c0ec0fc..26e1dbe547 100644
--- a/intro_flutter_gpu/step_12/windows/runner/Runner.rc
+++ b/intro_flutter_gpu/step_12/windows/runner/Runner.rc
@@ -93,7 +93,7 @@ BEGIN
             VALUE "FileDescription", "intro_flutter_gpu" "\0"
             VALUE "FileVersion", VERSION_AS_STRING "\0"
             VALUE "InternalName", "intro_flutter_gpu" "\0"
-            VALUE "LegalCopyright", "Copyright (C) 2024 com.example. All rights reserved." "\0"
+            VALUE "LegalCopyright", "Copyright (C) 2025 com.example. All rights reserved." "\0"
             VALUE "OriginalFilename", "intro_flutter_gpu.exe" "\0"
             VALUE "ProductName", "intro_flutter_gpu" "\0"
             VALUE "ProductVersion", VERSION_AS_STRING "\0"