SKIP: FAILED Validation Failure: #include using namespace metal; void textureSample_c2f4e8() { float res = arg_0.sample(arg_1, float3(), 1); } fragment void fragment_main() { textureSample_c2f4e8(); return; } tint_yWQ2qq.metal:5:15: error: use of undeclared identifier 'arg_0' float res = arg_0.sample(arg_1, float3(), 1); ^ tint_yWQ2qq.metal:5:28: error: use of undeclared identifier 'arg_1' float res = arg_0.sample(arg_1, float3(), 1); ^ 2 errors generated.