[deno] add deviceStartCapture and deviceStopCapture

This is achieved by adding a new `Deno.webgpu` namespace which will be
used for non-spec functionality, which for now will be marked as
unstable

(cherry picked from denoland/deno#28192)

Author: crowlKats

deno_webgpu/01_webgpu.js

@@ -37,6 +37,8 @@ import {
   GPUTextureView,
   GPUExternalTexture,
   op_create_gpu,
+  op_webgpu_device_start_capture,
+  op_webgpu_device_stop_capture,
 } from "ext:core/ops";
 const {
   ObjectDefineProperty,
@@ -884,6 +886,19 @@ webidl.converters["GPUUncapturedErrorEventInit"] = webidl
     dictMembersGPUUncapturedErrorEventInit,
   );
 
+function deviceStartCapture(device) {
+  op_webgpu_device_start_capture(device);
+}
+
+function deviceStopCapture(device) {
+  op_webgpu_device_stop_capture(device);
+}
+
+const denoNsWebGPU = {
+  deviceStartCapture,
+  deviceStopCapture,
+};
+
 let gpu;
 function initGPU() {
   if (!gpu) {
@@ -896,6 +911,7 @@ function initGPU() {
 }
 
 export {
+  denoNsWebGPU,
   GPU,
   gpu,
   GPUAdapter,

deno_webgpu/device.rs

@@ -917,3 +917,21 @@ impl GPUDeviceLostInfo {
     "device was lost"
   }
 }
+
+#[op2(fast)]
+pub fn op_webgpu_device_start_capture(#[cppgc] device: &GPUDevice) {
+  unsafe {
+    device
+      .instance
+      .device_start_graphics_debugger_capture(device.id);
+  }
+}
+
+#[op2(fast)]
+pub fn op_webgpu_device_stop_capture(#[cppgc] device: &GPUDevice) {
+  unsafe {
+    device
+      .instance
+      .device_stop_graphics_debugger_capture(device.id);
+  }
+}

deno_webgpu/lib.rs

@@ -64,7 +64,11 @@ pub type Instance = Arc<wgpu_core::global::Global>;
 deno_core::extension!(
   deno_webgpu,
   deps = [deno_webidl, deno_web],
-  ops = [op_create_gpu],
+  ops = [
+    op_create_gpu,
+    device::op_webgpu_device_start_capture,
+    device::op_webgpu_device_stop_capture,
+  ],
   objects = [
     GPU,
     adapter::GPUAdapter,