dawn-cmake/test/shader_io/fragment_input_mixed.wgsl

struct FragmentInputs0 {
  [[builtin(position)]] position : vec4<f32>;
  [[location(0), interpolate(flat)]] loc0 : i32;
};
struct FragmentInputs1 {
  [[location(3)]] loc3 : vec4<f32>;
  [[builtin(sample_mask)]] sample_mask : u32;
};

[[stage(fragment)]]
fn main(
  inputs0 : FragmentInputs0,
  [[builtin(front_facing)]] front_facing : bool,
  [[location(1), interpolate(flat)]] loc1 : u32,
  [[builtin(sample_index)]] sample_index : u32,
  inputs1 : FragmentInputs1,
  [[location(2)]] loc2 : f32,
) {
  if (front_facing) {
    let foo : vec4<f32> = inputs0.position;
    let bar : u32 = sample_index + inputs1.sample_mask;
    let i : i32 = inputs0.loc0;
    let u : u32 = loc1;
    let f : f32 = loc2;
    let v : vec4<f32> = inputs1.loc3;
  }
}