[[stage(fragment)]] fn main0() -> [[location(0)]] i32 { return 1; } [[stage(fragment)]] fn main1() -> [[location(1)]] u32 { return 1u; } [[stage(fragment)]] fn main2() -> [[location(2)]] f32 { return 1.0; } [[stage(fragment)]] fn main3() -> [[location(3)]] vec4<f32> { return vec4<f32>(1.0, 2.0, 3.0, 4.0); }