@compute
@workgroup_size(16, 16)
fn computeMain(@builtin(global_invocation_id) id: vec3u)
{
  let outSize = textureDimensions(out);
  if (id.x >= outSize.x || id.y >= outSize.y) {
    return;
  }

  let coordinate = vec2f(f32(id.x) + 0.5, f32(outSize.y - id.y) - 0.5);
  let outSizef = vec2f(outSize);
  let uv = (coordinate * 2.0 - outSizef) / outSizef.y;

  let color = vec3f(uv.xy, 0);

  textureStore(out, id.xy, vec4f(color, 1.0));
}