Texture coordinates

src/main.rs

@@ -367,6 +367,10 @@ fn load_model() -> MeshData {
                     m.mesh.positions[t + 2],
                     -m.mesh.positions[t + 1],
                 ],
+                tex_coords: [
+                    m.mesh.texcoords[i * 2],
+                    m.mesh.texcoords[i * 2 + 1],
+                ],
             });
         }
 
@@ -479,8 +483,8 @@ fn main() {
     let mut camera = Flycam::new(10.0, 0.002);
     let mut is_grabbed = false;
     let mut ren = pollster::block_on(Renderer::new(&window));
-    let mut state: Box<dyn WorldState> = Box::new(Planets::new(&mut ren));
-    // let mut state: Box<dyn WorldState> = Box::new(Grid::new(&mut ren));
+    // let mut state: Box<dyn WorldState> = Box::new(Planets::new(&mut ren));
+    let mut state: Box<dyn WorldState> = Box::new(Grid::new(&mut ren));
 
     event_loop.run(move |event, _, control_flow| match event {
         Event::RedrawRequested(_) => match ren.render(&camera, &state.render()) {

src/mesh.rs

@@ -2,6 +2,7 @@
 #[derive(Copy, Clone, bytemuck::Pod, bytemuck::Zeroable)]
 pub struct Vertex {
     pub position: [f32; 3],
+    pub tex_coords: [f32; 2],
 }
 
 impl Vertex {
@@ -9,11 +10,18 @@ impl Vertex {
         wgpu::VertexBufferLayout {
             array_stride: std::mem::size_of::<Vertex>() as wgpu::BufferAddress,
             step_mode: wgpu::VertexStepMode::Vertex,
-            attributes: &[wgpu::VertexAttribute {
-                offset: 0,
-                shader_location: 0,
-                format: wgpu::VertexFormat::Float32x3,
-            }],
+            attributes: &[
+                wgpu::VertexAttribute {
+                    offset: 0,
+                    shader_location: 0,
+                    format: wgpu::VertexFormat::Float32x3,
+                },
+                wgpu::VertexAttribute {
+                    offset: std::mem::size_of::<[f32; 3]>() as wgpu::BufferAddress,
+                    shader_location: 1,
+                    format: wgpu::VertexFormat::Float32x2,
+                },
+            ],
         }
     }
 }

src/shader.wgsl

@@ -12,10 +12,12 @@ struct MeshData {
 
 struct VertexInput {
   [[location(0)]] position: vec3<f32>;
+  [[location(1)]] tex_coords: vec2<f32>;
 };
 
 struct VertexOutput {
   [[builtin(position)]] clip_position: vec4<f32>;
+  [[location(0)]] color: vec3<f32>;
 };
 
 [[group(0), binding(0)]]
@@ -32,6 +34,7 @@ fn vs_main(
   let transform = meshes.instances[mesh_idx].transform;
   var out: VertexOutput;
   out.clip_position = camera.vp * transform * vec4<f32>(vertex.position, 1.0);
+  out.color = vec3<f32>(vertex.tex_coords, 0.0);
   return out;
 }
 
@@ -39,5 +42,5 @@ fn vs_main(
 fn fs_main(
   frag: VertexOutput,
 ) -> [[location(0)]] vec4<f32> {
-  return vec4<f32>(1.0);
+  return vec4<f32>(frag.color, 1.0);
 }