               OpCapability Shader
          %1 = OpExtInstImport "GLSL.std.450"
               OpMemoryModel Logical GLSL450
               OpEntryPoint Fragment %_entrypoint_v "_entrypoint" %sk_FragColor
               OpExecutionMode %_entrypoint_v OriginUpperLeft
               OpName %sk_FragColor "sk_FragColor"
               OpName %_UniformBuffer "_UniformBuffer"
               OpMemberName %_UniformBuffer 0 "colorRed"
               OpName %_entrypoint_v "_entrypoint_v"
               OpName %main "main"
               OpDecorate %sk_FragColor RelaxedPrecision
               OpDecorate %sk_FragColor Location 0
               OpDecorate %sk_FragColor Index 0
               OpMemberDecorate %_UniformBuffer 0 Offset 0
               OpMemberDecorate %_UniformBuffer 0 RelaxedPrecision
               OpDecorate %_UniformBuffer Block
               OpDecorate %7 Binding 0
               OpDecorate %7 DescriptorSet 0
               OpDecorate %27 RelaxedPrecision
               OpDecorate %28 RelaxedPrecision
      %float = OpTypeFloat 32
    %v4float = OpTypeVector %float 4
%_ptr_Output_v4float = OpTypePointer Output %v4float
%sk_FragColor = OpVariable %_ptr_Output_v4float Output
%_UniformBuffer = OpTypeStruct %v4float
%_ptr_Uniform__UniformBuffer = OpTypePointer Uniform %_UniformBuffer
          %7 = OpVariable %_ptr_Uniform__UniformBuffer Uniform
       %void = OpTypeVoid
         %12 = OpTypeFunction %void
    %float_0 = OpConstant %float 0
    %v2float = OpTypeVector %float 2
         %16 = OpConstantComposite %v2float %float_0 %float_0
%_ptr_Function_v2float = OpTypePointer Function %v2float
         %20 = OpTypeFunction %v4float %_ptr_Function_v2float
%_ptr_Uniform_v4float = OpTypePointer Uniform %v4float
        %int = OpTypeInt 32 1
      %int_0 = OpConstant %int 0
%_entrypoint_v = OpFunction %void None %12
         %13 = OpLabel
         %17 = OpVariable %_ptr_Function_v2float Function
               OpStore %17 %16
         %19 = OpFunctionCall %v4float %main %17
               OpStore %sk_FragColor %19
               OpReturn
               OpFunctionEnd
       %main = OpFunction %v4float None %20
         %21 = OpFunctionParameter %_ptr_Function_v2float
         %22 = OpLabel
         %23 = OpAccessChain %_ptr_Uniform_v4float %7 %int_0
         %27 = OpLoad %v4float %23
         %28 = OpVectorShuffle %v4float %27 %27 2 3 1 0
               OpReturnValue %28
               OpFunctionEnd
