ffc9dec755
We now have two functions `writeOpLoad` and `writeOpStore` which are in charge of writing SpvOpLoad and SpvOpStore instructions. `writeOpStore` also keeps track of pointer stores in a "store cache." Subsequent loads from that same pointer will be found in the cache and will return the value stored in that pointer instead. Such a cache definitely cannot work in the face of control flow, so we make the following concessions: - `pruneReachableOps` is now `pruneConditionalOps`. Any pointers that are altered inside a potentially-unreachable block are cleared from the cache entirely. - The entire store cache is cleared at all OpLabels within a loop. The cache also cannot work in the presence of swizzled stores, so we make another significant concession: - The entire store cache is cleared whenever we store into a non-memory pointer (e.g., assigning into a swizzled LValue, such as `foo.xz`). Despite these significant limitations, this manages to dramatically shrink many real-world examples. Change-Id: I0981a0cf7b45b064e153e9ada271494c8e00cad5 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/530054 Reviewed-by: Brian Osman <brianosman@google.com> Commit-Queue: John Stiles <johnstiles@google.com> Auto-Submit: John Stiles <johnstiles@google.com>
92 lines
3.2 KiB
JavaScript
92 lines
3.2 KiB
JavaScript
OpCapability Shader
|
|
%1 = OpExtInstImport "GLSL.std.450"
|
|
OpMemoryModel Logical GLSL450
|
|
OpEntryPoint Fragment %_entrypoint_v "_entrypoint" %sk_FragColor %sk_Clockwise
|
|
OpExecutionMode %_entrypoint_v OriginUpperLeft
|
|
OpName %sk_FragColor "sk_FragColor"
|
|
OpName %sk_Clockwise "sk_Clockwise"
|
|
OpName %_UniformBuffer "_UniformBuffer"
|
|
OpMemberName %_UniformBuffer 0 "unknownInput"
|
|
OpName %_entrypoint_v "_entrypoint_v"
|
|
OpName %main "main"
|
|
OpName %i "i"
|
|
OpName %i4 "i4"
|
|
OpDecorate %sk_FragColor RelaxedPrecision
|
|
OpDecorate %sk_FragColor Location 0
|
|
OpDecorate %sk_FragColor Index 0
|
|
OpDecorate %sk_Clockwise BuiltIn FrontFacing
|
|
OpMemberDecorate %_UniformBuffer 0 Offset 0
|
|
OpMemberDecorate %_UniformBuffer 0 RelaxedPrecision
|
|
OpDecorate %_UniformBuffer Block
|
|
OpDecorate %10 Binding 0
|
|
OpDecorate %10 DescriptorSet 0
|
|
OpDecorate %32 RelaxedPrecision
|
|
OpDecorate %46 RelaxedPrecision
|
|
OpDecorate %48 RelaxedPrecision
|
|
OpDecorate %50 RelaxedPrecision
|
|
OpDecorate %52 RelaxedPrecision
|
|
OpDecorate %53 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
|
|
%_UniformBuffer = OpTypeStruct %float
|
|
%_ptr_Uniform__UniformBuffer = OpTypePointer Uniform %_UniformBuffer
|
|
%10 = OpVariable %_ptr_Uniform__UniformBuffer Uniform
|
|
%void = OpTypeVoid
|
|
%15 = OpTypeFunction %void
|
|
%float_0 = OpConstant %float 0
|
|
%v2float = OpTypeVector %float 2
|
|
%19 = OpConstantComposite %v2float %float_0 %float_0
|
|
%_ptr_Function_v2float = OpTypePointer Function %v2float
|
|
%23 = OpTypeFunction %v4float %_ptr_Function_v2float
|
|
%int = OpTypeInt 32 1
|
|
%_ptr_Function_int = OpTypePointer Function %int
|
|
%_ptr_Uniform_float = OpTypePointer Uniform %float
|
|
%int_0 = OpConstant %int 0
|
|
%v4int = OpTypeVector %int 4
|
|
%_ptr_Function_v4int = OpTypePointer Function %v4int
|
|
%v2int = OpTypeVector %int 2
|
|
%int_1 = OpConstant %int 1
|
|
%_entrypoint_v = OpFunction %void None %15
|
|
%16 = OpLabel
|
|
%20 = OpVariable %_ptr_Function_v2float Function
|
|
OpStore %20 %19
|
|
%22 = OpFunctionCall %v4float %main %20
|
|
OpStore %sk_FragColor %22
|
|
OpReturn
|
|
OpFunctionEnd
|
|
%main = OpFunction %v4float None %23
|
|
%24 = OpFunctionParameter %_ptr_Function_v2float
|
|
%25 = OpLabel
|
|
%i = OpVariable %_ptr_Function_int Function
|
|
%i4 = OpVariable %_ptr_Function_v4int Function
|
|
%29 = OpAccessChain %_ptr_Uniform_float %10 %int_0
|
|
%32 = OpLoad %float %29
|
|
%33 = OpConvertFToS %int %32
|
|
OpStore %i %33
|
|
%37 = OpCompositeConstruct %v4int %33 %33 %33 %33
|
|
OpStore %i4 %37
|
|
%39 = OpCompositeConstruct %v2int %33 %33
|
|
%40 = OpCompositeExtract %int %39 0
|
|
%41 = OpCompositeExtract %int %39 1
|
|
%43 = OpCompositeConstruct %v4int %40 %41 %int_0 %int_1
|
|
OpStore %i4 %43
|
|
%44 = OpCompositeConstruct %v4int %int_0 %33 %int_1 %int_0
|
|
OpStore %i4 %44
|
|
%45 = OpCompositeConstruct %v4int %int_0 %33 %int_0 %33
|
|
OpStore %i4 %45
|
|
%46 = OpConvertSToF %float %int_0
|
|
%47 = OpCompositeExtract %int %45 1
|
|
%48 = OpConvertSToF %float %47
|
|
%49 = OpCompositeExtract %int %45 2
|
|
%50 = OpConvertSToF %float %49
|
|
%51 = OpCompositeExtract %int %45 3
|
|
%52 = OpConvertSToF %float %51
|
|
%53 = OpCompositeConstruct %v4float %46 %48 %50 %52
|
|
OpReturnValue %53
|
|
OpFunctionEnd
|