dawn-cmake/test/tint/shader_io/fragment_input_builtins.wgs...

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#include <metal_stdlib>
using namespace metal;
void tint_symbol_inner(float4 position, bool front_facing, uint sample_index, uint sample_mask) {
if (front_facing) {
float4 const foo = position;
uint const bar = (sample_index + sample_mask);
}
}
fragment void tint_symbol(float4 position [[position]], bool front_facing [[front_facing]], uint sample_index [[sample_id]], uint sample_mask [[sample_mask]]) {
tint_symbol_inner(position, front_facing, sample_index, sample_mask);
return;
}