9e476b798f
The RelaxedPrecision decoration is now handled by nextId(), to make it easier to see all spots where a RelaxedPrecision decoration might be necessary. The goal of this initial refactor is not to actually fix the issues with RelaxedPrecision decorations, but rather to lay the groundwork for doing so in followup CLs. The initial intent of this change was to not affect the SPIR-V at all, saving modifications for followups, but there ended up being three kinds of changes to the output: 1. Doing things at nextId() time rather than later means some decorations move to an earlier spot in the output. This results in diffs, but should not cause any behavioral changes. 2. We were incorrectly tagging bools as RelaxedPrecision in some situations. By funneling things through fewer code paths, the refactor would have caused this to happen in even more situations, and the code responsible for the bug was being rewritten in this CL anyway, so it seemed worth just fixing the issue as part of this change. 3. Funneling things through fewer code paths ended up adding (correct) RelaxedPrecision modifiers to binary operations that had previously been missing them. It seemed better to just let it happen than to try to maintain bug-for-bug compatibility with the previous approach. Change-Id: Ia9654d6b5754e2c797e02226660cb618c9189b36 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/384318 Commit-Queue: Ethan Nicholas <ethannicholas@google.com> Reviewed-by: Brian Osman <brianosman@google.com>
41 lines
1.3 KiB
JavaScript
41 lines
1.3 KiB
JavaScript
OpCapability Shader
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%1 = OpExtInstImport "GLSL.std.450"
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OpMemoryModel Logical GLSL450
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OpEntryPoint Fragment %main "main" %sk_FragColor %sk_Clockwise
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OpExecutionMode %main OriginUpperLeft
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OpName %sk_FragColor "sk_FragColor"
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OpName %sk_Clockwise "sk_Clockwise"
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OpName %a "a"
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OpName %main "main"
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OpDecorate %sk_FragColor RelaxedPrecision
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OpDecorate %sk_FragColor Location 0
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OpDecorate %sk_FragColor Index 0
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OpDecorate %sk_Clockwise BuiltIn FrontFacing
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OpDecorate %17 RelaxedPrecision
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%float = OpTypeFloat 32
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%v4float = OpTypeVector %float 4
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%_ptr_Output_v4float = OpTypePointer Output %v4float
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%sk_FragColor = OpVariable %_ptr_Output_v4float Output
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%bool = OpTypeBool
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%_ptr_Input_bool = OpTypePointer Input %bool
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%sk_Clockwise = OpVariable %_ptr_Input_bool Input
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%v4bool = OpTypeVector %bool 4
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%_ptr_Private_v4bool = OpTypePointer Private %v4bool
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%a = OpVariable %_ptr_Private_v4bool Private
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%void = OpTypeVoid
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%14 = OpTypeFunction %void
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%int = OpTypeInt 32 1
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%int_1 = OpConstant %int 1
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%int_0 = OpConstant %int 0
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%_ptr_Output_float = OpTypePointer Output %float
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%main = OpFunction %void None %14
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%15 = OpLabel
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%17 = OpLoad %v4bool %a
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%16 = OpAny %bool %17
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%18 = OpSelect %int %16 %int_1 %int_0
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%22 = OpConvertSToF %float %18
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%23 = OpAccessChain %_ptr_Output_float %sk_FragColor %int_0
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OpStore %23 %22
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OpReturn
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OpFunctionEnd
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