cyborg/src/pass/mesh_shader.wgsl

struct VertexInput {
  [[location(0)]] position: vec3<f32>;
  [[location(1)]] color: vec3<f32>;
};

struct VertexOutput {
  [[builtin(position)]] clip_position: vec4<f32>;
  [[location(0)]] position: vec3<f32>;
  [[location(1)]] color: vec3<f32>;
};

[[stage(vertex)]]
fn vs_main(
  [[builtin(instance_index)]] mesh_idx: u32,
  [[builtin(vertex_index)]] vertex_idx: u32,
  vertex: VertexInput,
) -> VertexOutput {
  var out: VertexOutput;
  out.clip_position = vec4<f32>(vertex.position, 1.0);
  out.position = vertex.position;
  out.color = vertex.color;
  return out;
}

[[stage(fragment)]]
fn fs_main(
  frag: VertexOutput,
) -> [[location(0)]] vec4<f32> {
  return vec4<f32>(frag.color, 1.0);
}