OpCapability Shader
          %1 = OpExtInstImport "GLSL.std.450"
               OpMemoryModel Logical GLSL450
               OpEntryPoint Fragment %main "main" %sk_FragColor %sk_SecondaryFragColor
               OpExecutionMode %main OriginUpperLeft
               OpName %sk_FragColor "sk_FragColor"
               OpName %sk_SecondaryFragColor "sk_SecondaryFragColor"
               OpName %main "main"
               OpDecorate %sk_FragColor RelaxedPrecision
               OpDecorate %sk_FragColor Location 0
               OpDecorate %sk_FragColor Index 0
               OpDecorate %sk_SecondaryFragColor RelaxedPrecision
               OpDecorate %sk_SecondaryFragColor Location 0
               OpDecorate %sk_SecondaryFragColor Index 1
               OpDecorate %11 RelaxedPrecision
      %float = OpTypeFloat 32
    %v4float = OpTypeVector %float 4
%_ptr_Output_v4float = OpTypePointer Output %v4float
%sk_FragColor = OpVariable %_ptr_Output_v4float Output
%sk_SecondaryFragColor = OpVariable %_ptr_Output_v4float Output
       %void = OpTypeVoid
          %9 = OpTypeFunction %void
       %main = OpFunction %void None %9
         %10 = OpLabel
         %11 = OpLoad %v4float %sk_SecondaryFragColor
               OpStore %sk_FragColor %11
               OpReturn
               OpFunctionEnd