compress vertex color data to [u8;4]

comfy-core/src/lib.rs

@@ -582,7 +582,7 @@ pub struct RawDrawParams {
     pub pivot: Option<Vec2>,
 }
 
-const WHITE_ARRAY: [f32; 4] = [1.0, 1.0, 1.0, 1.0];
+const WHITE_ARRAY: [u8; 4] = [255, 255, 255, 255];
 
 pub const QUAD_VERTICES: &[SpriteVertex] = &[
     SpriteVertex {
@@ -620,15 +620,15 @@ pub struct Mesh {
 pub struct SpriteVertex {
     pub position: [f32; 3],
     pub tex_coords: [f32; 2],
-    pub color: [f32; 4],
+    pub color: [u8; 4],
 }
 
 impl SpriteVertex {
     pub fn new(position: Vec3, tex_coords: Vec2, color: Color) -> Self {
         Self {
             position: [position.x, position.y, position.z],
             tex_coords: [tex_coords.x, tex_coords.y],
-            color: [color.r, color.g, color.b, color.a],
+            color: color.to_array(),
         }
     }
 }

comfy-wgpu/src/lib.rs

@@ -54,7 +54,7 @@ pub trait Vertex {
 const ATTRIBS: [wgpu::VertexAttribute; 3] = wgpu::vertex_attr_array![
     0 => Float32x3,
     1 => Float32x2,
-    2 => Float32x4,
+    2 => Unorm8x4,
 ];
 
 impl Vertex for SpriteVertex {