skia2/tests/sksl/shared/MultipleAssignments.asm.frag
Ethan Nicholas a9c187e5cc Revert "Refactored SPIR-V RelaxedPrecision handling"
This reverts commit 9e476b798f.

Reason for revert: Angry Vulkan bots

Original change's description:
> Refactored SPIR-V RelaxedPrecision handling
>
> 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>

TBR=brianosman@google.com,ethannicholas@google.com,johnstiles@google.com

Change-Id: I9ada728e5fd5798bc1179640560c2e6045b7efd1
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/385158
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
2021-03-15 21:24:47 +00:00

64 lines
1.9 KiB
JavaScript

OpCapability Shader
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint Fragment %_entrypoint "_entrypoint" %sk_FragColor %sk_Clockwise
OpExecutionMode %_entrypoint OriginUpperLeft
OpName %sk_FragColor "sk_FragColor"
OpName %sk_Clockwise "sk_Clockwise"
OpName %_entrypoint "_entrypoint"
OpName %main "main"
OpName %x "x"
OpName %y "y"
OpName %a "a"
OpName %b "b"
OpName %c "c"
OpDecorate %sk_FragColor RelaxedPrecision
OpDecorate %sk_FragColor Location 0
OpDecorate %sk_FragColor Index 0
OpDecorate %sk_Clockwise RelaxedPrecision
OpDecorate %sk_Clockwise BuiltIn FrontFacing
OpDecorate %25 RelaxedPrecision
OpDecorate %26 RelaxedPrecision
OpDecorate %27 RelaxedPrecision
OpDecorate %29 RelaxedPrecision
%float = OpTypeFloat 32
%v4float = OpTypeVector %float 4
%_ptr_Output_v4float = OpTypePointer Output %v4float
%sk_FragColor = OpVariable %_ptr_Output_v4float Output
%bool = OpTypeBool
%_ptr_Input_bool = OpTypePointer Input %bool
%sk_Clockwise = OpVariable %_ptr_Input_bool Input
%void = OpTypeVoid
%12 = OpTypeFunction %void
%15 = OpTypeFunction %v4float
%_ptr_Function_float = OpTypePointer Function %float
%float_1 = OpConstant %float 1
%float_0 = OpConstant %float 0
%_entrypoint = OpFunction %void None %12
%13 = OpLabel
%14 = OpFunctionCall %v4float %main
OpStore %sk_FragColor %14
OpReturn
OpFunctionEnd
%main = OpFunction %v4float None %15
%16 = OpLabel
%x = OpVariable %_ptr_Function_float Function
%y = OpVariable %_ptr_Function_float Function
%a = OpVariable %_ptr_Function_float Function
%b = OpVariable %_ptr_Function_float Function
%c = OpVariable %_ptr_Function_float Function
OpStore %y %float_1
OpStore %x %float_1
OpStore %c %float_0
OpStore %b %float_0
OpStore %a %float_0
%25 = OpLoad %float %a
%26 = OpLoad %float %b
%27 = OpFMul %float %25 %26
%28 = OpLoad %float %x
%29 = OpLoad %float %c
%30 = OpLoad %float %y
%31 = OpCompositeConstruct %v4float %27 %28 %29 %30
OpReturnValue %31
OpFunctionEnd