struct FragmentInputs { [[builtin(position)]] position : vec4<f32>; [[builtin(front_facing)]] front_facing : bool; [[builtin(sample_index)]] sample_index : u32; [[builtin(sample_mask)]] sample_mask : u32; } [[stage(fragment)]] fn main(inputs : FragmentInputs) { if (inputs.front_facing) { let foo : vec4<f32> = inputs.position; let bar : u32 = (inputs.sample_index + inputs.sample_mask); } }