SKIP: FAILED Validation Failure: #include using namespace metal; void textureSampleGrad_468f88() { float4 res = arg_0.sample(arg_1, float2(), gradient2d(float2(), float2()), int2()); } vertex void vertex_main() { textureSampleGrad_468f88(); return; } fragment void fragment_main() { textureSampleGrad_468f88(); return; } kernel void compute_main() { textureSampleGrad_468f88(); return; } tint_doTaaj.metal:5:16: error: use of undeclared identifier 'arg_0' float4 res = arg_0.sample(arg_1, float2(), gradient2d(float2(), float2()), int2()); ^ tint_doTaaj.metal:5:29: error: use of undeclared identifier 'arg_1' float4 res = arg_0.sample(arg_1, float2(), gradient2d(float2(), float2()), int2()); ^ 2 errors generated.