struct FragmentOutputs { [[location(0)]] loc0 : i32; [[location(1)]] loc1 : u32; [[location(2)]] loc2 : f32; [[location(3)]] loc3 : vec4; } [[stage(fragment)]] fn main() -> FragmentOutputs { return FragmentOutputs(1, 1u, 1.0, vec4(1.0, 2.0, 3.0, 4.0)); }