1struct VertexInput {
 2    @location(0) position: vec2f,
 3    @location(1) color: vec4f,
 4};
 5
 6struct VertexOutput {
 7    @builtin(position) position: vec4f,
 8    // Passed to the fragment shader
 9    @location(0) color: vec4f,
10};
11
12@vertex
13fn vertex_shader(in: VertexInput) -> VertexOutput {
14    var out: VertexOutput;
15    out.position = vec4f(in.position, 0.0, 1.0);
16    out.color = in.color;
17    return out;
18}
19
20@fragment
21fn fragment_shader(in: VertexOutput) -> @location(0) vec4f {
22    return in.color;
23}