feat: add UVs to shader pipeline

src/common/mesh.rs

@@ -69,8 +69,9 @@ impl MeshRegistry {
             let all_norms = obj.normals();
             let obj_num_verts = all_verts.len();
             all_verts.iter().zip(all_norms.iter())
-                .for_each(|(pos, norm)| {
+                .zip(obj.uvs().iter())
-                    buf_verts.push(Vertex3::new(*pos, *norm));
+                .for_each(|((pos, norm), uv)| {
+                    buf_verts.push(Vertex3::new(*pos, *norm, *uv));
                 });
             // buf_verts.extend(all_verts.map(|v| Vertex3::new(v.position(), v.normal().unwrap_or_default())));
 

src/gpu/vertex3.rs

@@ -8,16 +8,20 @@ pub struct Vertex3 {
     pub(crate) position: [f32; 3],
     #[format(R32G32B32_SFLOAT)]
     pub(crate) normal: [f32; 3],
+    #[format(R32G32B32_SFLOAT)]
+    pub(crate) uv: [f32; 3],
 }
 
 impl Vertex3 {
     pub fn new(
         position: [f32; 3],
         normal: [f32; 3],
+        uv: [f32; 3],
     ) -> Self {
         Self {
             position,
             normal,
+            uv
         }
     }
 }

src/shaders/triangle_frag.glsl

@@ -3,6 +3,7 @@
 // Per-fragment - mesh dependent information.
 layout(location = 0) in vec3 inFragPosition;
 layout(location = 1) in vec3 inNormal;
+layout(location = 2) in vec3 inUv;
 
 // Per-frame information - CameraUniform struct
 layout(set = 0, binding = 0) uniform CameraUniform {

src/shaders/triangle_vert.glsl

@@ -3,12 +3,13 @@
 // Per-vertex information - Vertex3 struct
 layout(location = 0) in vec3 position;
 layout(location = 1) in vec3 normal;
+layout(location = 2) in vec3 uv;
 
 // Per-instance information - GpuInstance struct
-layout(location = 2) in vec4 transform_col1;
+layout(location = 3) in vec4 transform_col1;
-layout(location = 3) in vec4 transform_col2;
+layout(location = 4) in vec4 transform_col2;
-layout(location = 4) in vec4 transform_col3;
+layout(location = 5) in vec4 transform_col3;
-layout(location = 5) in vec4 transform_col4;
+layout(location = 6) in vec4 transform_col4;
 
 // Per-frame information - CameraUniform struct
 layout(set = 0, binding = 0) uniform CameraUniform {
@@ -21,6 +22,7 @@ layout(set = 0, binding = 0) uniform CameraUniform {
 // Outputs
 layout(location = 0) out vec3 outFragPosition;
 layout(location = 1) out vec3 outNormal;
+layout(location = 2) out vec3 outUv;
 
 void main() {
     // We then multiply each vertex by its transform to find the correct location in the scene.
@@ -31,4 +33,5 @@ void main() {
     gl_Position = mvp * vec4(position, 1.0f);
     outFragPosition = vec3(model * vec4(position, 1.0));
     outNormal = normal;
+    outUv = uv;
 }