2219c4a392
MSL 2.3 has everything needed to support this extension on all platforms. The existing `discard_fragment()` function was given demote semantics, similar to Direct3D, and the `simd_is_helper_thread()` function was finally added to iOS. I've left the old test alone. Should I remove it in favor of these?
42 lines
1.6 KiB
JavaScript
42 lines
1.6 KiB
JavaScript
; SPIR-V
|
|
; Version: 1.3
|
|
; Generator: Khronos Glslang Reference Front End; 7
|
|
; Bound: 19
|
|
; Schema: 0
|
|
OpCapability Shader
|
|
OpCapability DemoteToHelperInvocationEXT
|
|
OpExtension "SPV_EXT_demote_to_helper_invocation"
|
|
%1 = OpExtInstImport "GLSL.std.450"
|
|
OpMemoryModel Logical GLSL450
|
|
OpEntryPoint Fragment %main "main" %FragColor
|
|
OpExecutionMode %main OriginUpperLeft
|
|
OpSource GLSL 450
|
|
OpSourceExtension "GL_EXT_demote_to_helper_invocation"
|
|
OpName %main "main"
|
|
OpName %FragColor "FragColor"
|
|
OpDecorate %FragColor Location 0
|
|
%void = OpTypeVoid
|
|
%3 = OpTypeFunction %void
|
|
%bool = OpTypeBool
|
|
%_ptr_Function_bool = OpTypePointer Function %bool
|
|
%float = OpTypeFloat 32
|
|
%v4float = OpTypeVector %float 4
|
|
%_ptr_Output_v4float = OpTypePointer Output %v4float
|
|
%FragColor = OpVariable %_ptr_Output_v4float Output
|
|
%float_1 = OpConstant %float 1
|
|
%float_0 = OpConstant %float 0
|
|
%19 = OpConstantComposite %v4float %float_1 %float_0 %float_0 %float_1
|
|
%main = OpFunction %void None %3
|
|
%5 = OpLabel
|
|
%9 = OpIsHelperInvocationEXT %bool
|
|
OpDemoteToHelperInvocationEXT
|
|
%10 = OpLogicalNot %bool %9
|
|
OpSelectionMerge %12 None
|
|
OpBranchConditional %10 %11 %12
|
|
%11 = OpLabel
|
|
OpStore %FragColor %19
|
|
OpBranch %12
|
|
%12 = OpLabel
|
|
OpReturn
|
|
OpFunctionEnd
|