WIP Perlin noise support

Cargo.toml

@@ -53,3 +53,7 @@ debug = 1
 [profile.dev]
 opt-level = 1
 split-debuginfo = "unpacked"
+
+[lints.clippy]
+manual_range_contains = "allow"
+collapsible_if = "allow"

README.md

@@ -75,15 +75,14 @@ for custom allocators is planned in order to make `alloc` optional as well.
 
 ## Planned
 
-- Material support
-- Basic scene graph
-- Hierarchical transforms
-
-- Mipmapping and mipmap generation
-- More procedural generation
-- Basic animation and sequencing
-- Particle simulations
-- Support for more file types
+* Material support
+* Basic scene graph
+* Hierarchical transforms
+* Mipmapping and mipmap generation
+* More procedural generation
+* Basic animation and sequencing
+* Particle simulations
+* Support for more file types
 
 # Organization
 

core/examples/hello_tri.rs

@@ -0,0 +1,58 @@
+use retrofire_core::geom::tri;
+use retrofire_core::{prelude::*, util::*};
+
+fn main() {
+    let verts = [
+        vertex(pt3(-1.0, 1.0, 0.0), rgb(1.0, 0.0, 0.0)),
+        vertex(pt3(1.0, 1.0, 0.0), rgb(0.0, 0.8, 0.0)),
+        vertex(pt3(0.0, -1.0, 0.0), rgb(0.4, 0.4, 1.0)),
+    ];
+
+    #[cfg(feature = "fp")]
+    let shader = shader::new(
+        |v: Vertex3<Color3f>, mvp: &Mat4x4<ModelToProj>| {
+            // Transform vertex position from model to projection space
+            // Interpolate vertex colors in linear color space
+            vertex(mvp.apply(&v.pos), v.attrib.to_linear())
+        },
+        |frag: Frag<Color3f<_>>| frag.var.to_srgb().to_color4(),
+    );
+    #[cfg(not(feature = "fp"))]
+    let shader = shader::new(
+        |v: Vertex3<Color3f>, mvp: &Mat4x4<ModelToProj>| {
+            // Transform vertex position from model to projection space
+            // Interpolate vertex colors in normal sRGB color space
+            vertex(mvp.apply(&v.pos), v.attrib)
+        },
+        |frag: Frag<Color3f<_>>| frag.var.to_color4(),
+    );
+
+    let dims @ (w, h) = (640, 480);
+    let modelview = translate3(0.0, 0.0, 2.0).to();
+    let project = perspective(1.0, w as f32 / h as f32, 0.1..1000.0);
+    let viewport = viewport(pt2(0, h)..pt2(w, 0));
+
+    let mut framebuf = Buf2::<Color4>::new(dims);
+
+    render(
+        [tri(0, 1, 2)],
+        verts,
+        &shader,
+        &modelview.then(&project),
+        viewport,
+        &mut framebuf,
+        &Context::default(),
+    );
+
+    let center_pixel = framebuf[[w / 2, h / 2]];
+
+    if cfg!(feature = "fp") {
+        assert_eq!(center_pixel, rgba(150, 128, 186, 255));
+    } else {
+        assert_eq!(center_pixel, rgba(114, 102, 127, 255));
+    }
+    #[cfg(feature = "std")]
+    {
+        pnm::save_ppm("triangle.ppm", framebuf).unwrap();
+    }
+}