1// `custom_phase_item.wgsl`
2//
3// This shader goes with the `custom_phase_item` example. It demonstrates how to
4// enqueue custom rendering logic in a `RenderPhase`.
5
6// The GPU-side vertex structure.
7struct Vertex {
8    // The world-space position of the vertex.
9    @location(0) position: vec3<f32>,
10    // The color of the vertex.
11    @location(1) color: vec3<f32>,
12};
13
14// Information passed from the vertex shader to the fragment shader.
15struct VertexOutput {
16    // The clip-space position of the vertex.
17    @builtin(position) clip_position: vec4<f32>,
18    // The color of the vertex.
19    @location(0) color: vec3<f32>,
20};
21
22// The vertex shader entry point.
23@vertex
24fn vertex(vertex: Vertex) -> VertexOutput {
25    // Use an orthographic projection.
26    var vertex_output: VertexOutput;
27    vertex_output.clip_position = vec4(vertex.position.xyz, 1.0);
28    vertex_output.color = vertex.color;
29    return vertex_output;
30}
31
32// The fragment shader entry point.
33@fragment
34fn fragment(vertex_output: VertexOutput) -> @location(0) vec4<f32> {
35    return vec4(vertex_output.color, 1.0);
36}