OpCapability Shader
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint Fragment %main "main" %sk_Clockwise
OpExecutionMode %main OriginUpperLeft
OpName %sk_Clockwise "sk_Clockwise"
OpName %main "main"
OpDecorate %sk_Clockwise BuiltIn FrontFacing
%bool = OpTypeBool
%_ptr_Input_bool = OpTypePointer Input %bool
%sk_Clockwise = OpVariable %_ptr_Input_bool Input
%void = OpTypeVoid
%7 = OpTypeFunction %void
%main = OpFunction %void None %7
%8 = OpLabel
OpReturn
OpFunctionEnd