SKIP: FAILED Validation Failure: #include using namespace metal; void textureSample_3b50bd() { float4 res = arg_0.sample(arg_1, float3()); } fragment void fragment_main() { textureSample_3b50bd(); return; } tint_rGB6Up.metal:5:16: error: use of undeclared identifier 'arg_0' float4 res = arg_0.sample(arg_1, float3()); ^ tint_rGB6Up.metal:5:29: error: use of undeclared identifier 'arg_1' float4 res = arg_0.sample(arg_1, float3()); ^ 2 errors generated.