enable dual_source_blending;

struct FragInput {
  @location(0)
  a : vec4<f32>,
  @location(1)
  b : vec4<f32>,
}

struct FragOutput {
  @location(0) @blend_src(0)
  color : vec4<f32>,
  @location(0) @blend_src(1)
  blend : vec4<f32>,
}

@fragment
fn frag_main(in : FragInput) -> FragOutput {
  var output : FragOutput;
  output.color = in.a;
  output.blend = in.b;
  return output;
}