SKIP: FAILED Validation Failure: #include using namespace metal; void textureSampleBias_81c19a() { float4 res = arg_0.sample(arg_1, float2(), bias(1.0f), int2()); } fragment void fragment_main() { textureSampleBias_81c19a(); return; } tint_Zl326D.metal:5:16: error: use of undeclared identifier 'arg_0' float4 res = arg_0.sample(arg_1, float2(), bias(1.0f), int2()); ^ tint_Zl326D.metal:5:29: error: use of undeclared identifier 'arg_1' float4 res = arg_0.sample(arg_1, float2(), bias(1.0f), int2()); ^ 2 errors generated.