mirror of
https://github.com/KhronosGroup/SPIRV-Tools
synced 2024-11-27 13:50:07 +00:00
83228137e1
Re-formatted the source tree with the command:
$ /usr/bin/clang-format -style=file -i \
$(find include source tools test utils -name '*.cpp' -or -name '*.h')
This required a fix to source/val/decoration.h. It was not including
spirv.h, which broke builds when the #include headers were re-ordered by
clang-format.
723 lines
20 KiB
C++
723 lines
20 KiB
C++
// Copyright (c) 2017 Valve Corporation
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// Copyright (c) 2017 LunarG Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "pass_fixture.h"
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#include "pass_utils.h"
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namespace {
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using namespace spvtools;
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using LocalAccessChainConvertTest = PassTest<::testing::Test>;
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TEST_F(LocalAccessChainConvertTest, StructOfVecsOfFloatConverted) {
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// #version 140
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//
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// in vec4 BaseColor;
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//
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// struct S_t {
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// vec4 v0;
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// vec4 v1;
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// };
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//
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// void main()
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// {
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// S_t s0;
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// s0.v1 = BaseColor;
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// gl_FragColor = s0.v1;
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// }
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const std::string predefs_before =
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R"(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" %BaseColor %gl_FragColor
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OpExecutionMode %main OriginUpperLeft
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OpSource GLSL 140
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OpName %main "main"
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OpName %S_t "S_t"
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OpMemberName %S_t 0 "v0"
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OpMemberName %S_t 1 "v1"
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OpName %s0 "s0"
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OpName %BaseColor "BaseColor"
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OpName %gl_FragColor "gl_FragColor"
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%void = OpTypeVoid
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%8 = OpTypeFunction %void
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%float = OpTypeFloat 32
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%v4float = OpTypeVector %float 4
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%S_t = OpTypeStruct %v4float %v4float
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%_ptr_Function_S_t = OpTypePointer Function %S_t
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%int = OpTypeInt 32 1
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%int_1 = OpConstant %int 1
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%_ptr_Input_v4float = OpTypePointer Input %v4float
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%BaseColor = OpVariable %_ptr_Input_v4float Input
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%_ptr_Function_v4float = OpTypePointer Function %v4float
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%_ptr_Output_v4float = OpTypePointer Output %v4float
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%gl_FragColor = OpVariable %_ptr_Output_v4float Output
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)";
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const std::string predefs_after =
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R"(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" %BaseColor %gl_FragColor
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OpExecutionMode %main OriginUpperLeft
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OpSource GLSL 140
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OpName %main "main"
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OpName %S_t "S_t"
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OpMemberName %S_t 0 "v0"
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OpMemberName %S_t 1 "v1"
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OpName %s0 "s0"
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OpName %BaseColor "BaseColor"
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OpName %gl_FragColor "gl_FragColor"
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%void = OpTypeVoid
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%8 = OpTypeFunction %void
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%float = OpTypeFloat 32
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%v4float = OpTypeVector %float 4
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%S_t = OpTypeStruct %v4float %v4float
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%_ptr_Function_S_t = OpTypePointer Function %S_t
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%int = OpTypeInt 32 1
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%_ptr_Input_v4float = OpTypePointer Input %v4float
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%BaseColor = OpVariable %_ptr_Input_v4float Input
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%_ptr_Function_v4float = OpTypePointer Function %v4float
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%_ptr_Output_v4float = OpTypePointer Output %v4float
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%gl_FragColor = OpVariable %_ptr_Output_v4float Output
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)";
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const std::string before =
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R"(%main = OpFunction %void None %8
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%17 = OpLabel
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%s0 = OpVariable %_ptr_Function_S_t Function
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%18 = OpLoad %v4float %BaseColor
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%19 = OpAccessChain %_ptr_Function_v4float %s0 %int_1
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OpStore %19 %18
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%20 = OpAccessChain %_ptr_Function_v4float %s0 %int_1
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%21 = OpLoad %v4float %20
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OpStore %gl_FragColor %21
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OpReturn
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OpFunctionEnd
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)";
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const std::string after =
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R"(%main = OpFunction %void None %8
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%17 = OpLabel
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%s0 = OpVariable %_ptr_Function_S_t Function
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%18 = OpLoad %v4float %BaseColor
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%22 = OpLoad %S_t %s0
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%23 = OpCompositeInsert %S_t %18 %22 1
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OpStore %s0 %23
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%24 = OpLoad %S_t %s0
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%25 = OpCompositeExtract %v4float %24 1
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OpStore %gl_FragColor %25
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OpReturn
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OpFunctionEnd
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)";
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SinglePassRunAndCheck<opt::LocalAccessChainConvertPass>(
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predefs_before + before, predefs_after + after, true, true);
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}
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TEST_F(LocalAccessChainConvertTest, InBoundsAccessChainsConverted) {
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// #version 140
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//
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// in vec4 BaseColor;
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//
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// struct S_t {
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// vec4 v0;
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// vec4 v1;
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// };
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//
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// void main()
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// {
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// S_t s0;
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// s0.v1 = BaseColor;
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// gl_FragColor = s0.v1;
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// }
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const std::string predefs_before =
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R"(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" %BaseColor %gl_FragColor
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OpExecutionMode %main OriginUpperLeft
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OpSource GLSL 140
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OpName %main "main"
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OpName %S_t "S_t"
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OpMemberName %S_t 0 "v0"
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OpMemberName %S_t 1 "v1"
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OpName %s0 "s0"
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OpName %BaseColor "BaseColor"
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OpName %gl_FragColor "gl_FragColor"
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%void = OpTypeVoid
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%8 = OpTypeFunction %void
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%float = OpTypeFloat 32
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%v4float = OpTypeVector %float 4
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%S_t = OpTypeStruct %v4float %v4float
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%_ptr_Function_S_t = OpTypePointer Function %S_t
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%int = OpTypeInt 32 1
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%int_1 = OpConstant %int 1
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%_ptr_Input_v4float = OpTypePointer Input %v4float
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%BaseColor = OpVariable %_ptr_Input_v4float Input
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%_ptr_Function_v4float = OpTypePointer Function %v4float
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%_ptr_Output_v4float = OpTypePointer Output %v4float
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%gl_FragColor = OpVariable %_ptr_Output_v4float Output
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)";
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const std::string predefs_after =
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R"(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" %BaseColor %gl_FragColor
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OpExecutionMode %main OriginUpperLeft
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OpSource GLSL 140
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OpName %main "main"
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OpName %S_t "S_t"
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OpMemberName %S_t 0 "v0"
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OpMemberName %S_t 1 "v1"
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OpName %s0 "s0"
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OpName %BaseColor "BaseColor"
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OpName %gl_FragColor "gl_FragColor"
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%void = OpTypeVoid
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%8 = OpTypeFunction %void
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%float = OpTypeFloat 32
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%v4float = OpTypeVector %float 4
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%S_t = OpTypeStruct %v4float %v4float
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%_ptr_Function_S_t = OpTypePointer Function %S_t
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%int = OpTypeInt 32 1
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%_ptr_Input_v4float = OpTypePointer Input %v4float
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%BaseColor = OpVariable %_ptr_Input_v4float Input
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%_ptr_Function_v4float = OpTypePointer Function %v4float
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%_ptr_Output_v4float = OpTypePointer Output %v4float
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%gl_FragColor = OpVariable %_ptr_Output_v4float Output
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)";
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const std::string before =
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R"(%main = OpFunction %void None %8
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%17 = OpLabel
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%s0 = OpVariable %_ptr_Function_S_t Function
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%18 = OpLoad %v4float %BaseColor
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%19 = OpInBoundsAccessChain %_ptr_Function_v4float %s0 %int_1
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OpStore %19 %18
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%20 = OpInBoundsAccessChain %_ptr_Function_v4float %s0 %int_1
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%21 = OpLoad %v4float %20
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OpStore %gl_FragColor %21
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OpReturn
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OpFunctionEnd
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)";
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const std::string after =
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R"(%main = OpFunction %void None %8
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%17 = OpLabel
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%s0 = OpVariable %_ptr_Function_S_t Function
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%18 = OpLoad %v4float %BaseColor
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%22 = OpLoad %S_t %s0
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%23 = OpCompositeInsert %S_t %18 %22 1
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OpStore %s0 %23
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%24 = OpLoad %S_t %s0
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%25 = OpCompositeExtract %v4float %24 1
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OpStore %gl_FragColor %25
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OpReturn
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OpFunctionEnd
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)";
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SinglePassRunAndCheck<opt::LocalAccessChainConvertPass>(
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predefs_before + before, predefs_after + after, true, true);
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}
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TEST_F(LocalAccessChainConvertTest, TwoUsesofSingleChainConverted) {
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// #version 140
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//
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// in vec4 BaseColor;
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//
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// struct S_t {
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// vec4 v0;
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// vec4 v1;
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// };
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//
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// void main()
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// {
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// S_t s0;
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// s0.v1 = BaseColor;
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// gl_FragColor = s0.v1;
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// }
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const std::string predefs_before =
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R"(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" %BaseColor %gl_FragColor
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OpExecutionMode %main OriginUpperLeft
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OpSource GLSL 140
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OpName %main "main"
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OpName %S_t "S_t"
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OpMemberName %S_t 0 "v0"
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OpMemberName %S_t 1 "v1"
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OpName %s0 "s0"
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OpName %BaseColor "BaseColor"
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OpName %gl_FragColor "gl_FragColor"
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%void = OpTypeVoid
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%8 = OpTypeFunction %void
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%float = OpTypeFloat 32
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%v4float = OpTypeVector %float 4
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%S_t = OpTypeStruct %v4float %v4float
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%_ptr_Function_S_t = OpTypePointer Function %S_t
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%int = OpTypeInt 32 1
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%int_1 = OpConstant %int 1
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%_ptr_Input_v4float = OpTypePointer Input %v4float
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%BaseColor = OpVariable %_ptr_Input_v4float Input
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%_ptr_Function_v4float = OpTypePointer Function %v4float
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%_ptr_Output_v4float = OpTypePointer Output %v4float
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%gl_FragColor = OpVariable %_ptr_Output_v4float Output
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)";
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const std::string predefs_after =
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R"(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" %BaseColor %gl_FragColor
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OpExecutionMode %main OriginUpperLeft
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OpSource GLSL 140
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OpName %main "main"
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OpName %S_t "S_t"
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OpMemberName %S_t 0 "v0"
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OpMemberName %S_t 1 "v1"
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OpName %s0 "s0"
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OpName %BaseColor "BaseColor"
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OpName %gl_FragColor "gl_FragColor"
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%void = OpTypeVoid
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%8 = OpTypeFunction %void
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%float = OpTypeFloat 32
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%v4float = OpTypeVector %float 4
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%S_t = OpTypeStruct %v4float %v4float
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%_ptr_Function_S_t = OpTypePointer Function %S_t
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%int = OpTypeInt 32 1
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%_ptr_Input_v4float = OpTypePointer Input %v4float
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%BaseColor = OpVariable %_ptr_Input_v4float Input
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%_ptr_Function_v4float = OpTypePointer Function %v4float
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%_ptr_Output_v4float = OpTypePointer Output %v4float
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%gl_FragColor = OpVariable %_ptr_Output_v4float Output
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)";
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const std::string before =
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R"(%main = OpFunction %void None %8
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%17 = OpLabel
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%s0 = OpVariable %_ptr_Function_S_t Function
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%18 = OpLoad %v4float %BaseColor
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%19 = OpAccessChain %_ptr_Function_v4float %s0 %int_1
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OpStore %19 %18
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%20 = OpLoad %v4float %19
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OpStore %gl_FragColor %20
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OpReturn
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OpFunctionEnd
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)";
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const std::string after =
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R"(%main = OpFunction %void None %8
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%17 = OpLabel
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%s0 = OpVariable %_ptr_Function_S_t Function
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%18 = OpLoad %v4float %BaseColor
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%21 = OpLoad %S_t %s0
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%22 = OpCompositeInsert %S_t %18 %21 1
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OpStore %s0 %22
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%23 = OpLoad %S_t %s0
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%24 = OpCompositeExtract %v4float %23 1
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OpStore %gl_FragColor %24
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OpReturn
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OpFunctionEnd
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)";
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SinglePassRunAndCheck<opt::LocalAccessChainConvertPass>(
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predefs_before + before, predefs_after + after, true, true);
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}
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TEST_F(LocalAccessChainConvertTest, OpaqueConverted) {
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// SPIR-V not representable in GLSL; not generatable from HLSL
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// at the moment
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const std::string predefs =
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R"(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" %outColor %texCoords
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OpExecutionMode %main OriginUpperLeft
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OpSource GLSL 140
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OpName %main "main"
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OpName %S_t "S_t"
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OpMemberName %S_t 0 "v0"
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OpMemberName %S_t 1 "v1"
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OpMemberName %S_t 2 "smp"
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OpName %foo_struct_S_t_vf2_vf21_ "foo(struct-S_t-vf2-vf21;"
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OpName %s "s"
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OpName %outColor "outColor"
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OpName %sampler15 "sampler15"
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OpName %s0 "s0"
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OpName %texCoords "texCoords"
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OpName %param "param"
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OpDecorate %sampler15 DescriptorSet 0
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%void = OpTypeVoid
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%12 = OpTypeFunction %void
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%float = OpTypeFloat 32
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%v2float = OpTypeVector %float 2
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%v4float = OpTypeVector %float 4
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%_ptr_Output_v4float = OpTypePointer Output %v4float
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%outColor = OpVariable %_ptr_Output_v4float Output
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%17 = OpTypeImage %float 2D 0 0 0 1 Unknown
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%18 = OpTypeSampledImage %17
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%S_t = OpTypeStruct %v2float %v2float %18
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%_ptr_Function_S_t = OpTypePointer Function %S_t
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%20 = OpTypeFunction %void %_ptr_Function_S_t
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%_ptr_UniformConstant_18 = OpTypePointer UniformConstant %18
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%_ptr_Function_18 = OpTypePointer Function %18
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%sampler15 = OpVariable %_ptr_UniformConstant_18 UniformConstant
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%int = OpTypeInt 32 1
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%int_0 = OpConstant %int 0
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%int_2 = OpConstant %int 2
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%_ptr_Function_v2float = OpTypePointer Function %v2float
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%_ptr_Input_v2float = OpTypePointer Input %v2float
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%texCoords = OpVariable %_ptr_Input_v2float Input
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)";
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const std::string before =
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R"(%main = OpFunction %void None %12
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%28 = OpLabel
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%s0 = OpVariable %_ptr_Function_S_t Function
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%param = OpVariable %_ptr_Function_S_t Function
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%29 = OpLoad %v2float %texCoords
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%30 = OpAccessChain %_ptr_Function_v2float %s0 %int_0
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OpStore %30 %29
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%31 = OpLoad %18 %sampler15
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%32 = OpAccessChain %_ptr_Function_18 %s0 %int_2
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OpStore %32 %31
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%33 = OpLoad %S_t %s0
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OpStore %param %33
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%34 = OpAccessChain %_ptr_Function_18 %param %int_2
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%35 = OpLoad %18 %34
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%36 = OpAccessChain %_ptr_Function_v2float %param %int_0
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%37 = OpLoad %v2float %36
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%38 = OpImageSampleImplicitLod %v4float %35 %37
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OpStore %outColor %38
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OpReturn
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OpFunctionEnd
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)";
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const std::string after =
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R"(%main = OpFunction %void None %12
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%28 = OpLabel
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%s0 = OpVariable %_ptr_Function_S_t Function
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%param = OpVariable %_ptr_Function_S_t Function
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%29 = OpLoad %v2float %texCoords
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%45 = OpLoad %S_t %s0
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%46 = OpCompositeInsert %S_t %29 %45 0
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OpStore %s0 %46
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%31 = OpLoad %18 %sampler15
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%47 = OpLoad %S_t %s0
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%48 = OpCompositeInsert %S_t %31 %47 2
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OpStore %s0 %48
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%33 = OpLoad %S_t %s0
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OpStore %param %33
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%49 = OpLoad %S_t %param
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%50 = OpCompositeExtract %18 %49 2
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%51 = OpLoad %S_t %param
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%52 = OpCompositeExtract %v2float %51 0
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%38 = OpImageSampleImplicitLod %v4float %50 %52
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OpStore %outColor %38
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OpReturn
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OpFunctionEnd
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)";
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const std::string remain =
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R"(%foo_struct_S_t_vf2_vf21_ = OpFunction %void None %20
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%s = OpFunctionParameter %_ptr_Function_S_t
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%39 = OpLabel
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%40 = OpAccessChain %_ptr_Function_18 %s %int_2
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%41 = OpLoad %18 %40
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%42 = OpAccessChain %_ptr_Function_v2float %s %int_0
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%43 = OpLoad %v2float %42
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%44 = OpImageSampleImplicitLod %v4float %41 %43
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OpStore %outColor %44
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OpReturn
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OpFunctionEnd
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)";
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SinglePassRunAndCheck<opt::LocalAccessChainConvertPass>(
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predefs + before + remain, predefs + after + remain, true, true);
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}
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TEST_F(LocalAccessChainConvertTest, NestedStructsConverted) {
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// #version 140
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//
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// in vec4 BaseColor;
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//
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// struct S1_t {
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// vec4 v1;
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// };
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//
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// struct S2_t {
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// vec4 v2;
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// S1_t s1;
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// };
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//
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// void main()
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// {
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// S2_t s2;
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// s2.s1.v1 = BaseColor;
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// gl_FragColor = s2.s1.v1;
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// }
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const std::string predefs_before =
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R"(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" %BaseColor %gl_FragColor
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OpExecutionMode %main OriginUpperLeft
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OpSource GLSL 140
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OpName %main "main"
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OpName %S1_t "S1_t"
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OpMemberName %S1_t 0 "v1"
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OpName %S2_t "S2_t"
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OpMemberName %S2_t 0 "v2"
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OpMemberName %S2_t 1 "s1"
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OpName %s2 "s2"
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OpName %BaseColor "BaseColor"
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OpName %gl_FragColor "gl_FragColor"
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%void = OpTypeVoid
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%9 = OpTypeFunction %void
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%float = OpTypeFloat 32
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%v4float = OpTypeVector %float 4
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%S1_t = OpTypeStruct %v4float
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%S2_t = OpTypeStruct %v4float %S1_t
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%_ptr_Function_S2_t = OpTypePointer Function %S2_t
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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_Input_v4float = OpTypePointer Input %v4float
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%BaseColor = OpVariable %_ptr_Input_v4float Input
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%_ptr_Function_v4float = OpTypePointer Function %v4float
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%_ptr_Output_v4float = OpTypePointer Output %v4float
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%gl_FragColor = OpVariable %_ptr_Output_v4float Output
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)";
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const std::string predefs_after =
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R"(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" %BaseColor %gl_FragColor
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OpExecutionMode %main OriginUpperLeft
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OpSource GLSL 140
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OpName %main "main"
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OpName %S1_t "S1_t"
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OpMemberName %S1_t 0 "v1"
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OpName %S2_t "S2_t"
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OpMemberName %S2_t 0 "v2"
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OpMemberName %S2_t 1 "s1"
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OpName %s2 "s2"
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OpName %BaseColor "BaseColor"
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OpName %gl_FragColor "gl_FragColor"
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%void = OpTypeVoid
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%9 = OpTypeFunction %void
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%float = OpTypeFloat 32
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%v4float = OpTypeVector %float 4
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%S1_t = OpTypeStruct %v4float
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%S2_t = OpTypeStruct %v4float %S1_t
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%_ptr_Function_S2_t = OpTypePointer Function %S2_t
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%int = OpTypeInt 32 1
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%_ptr_Input_v4float = OpTypePointer Input %v4float
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%BaseColor = OpVariable %_ptr_Input_v4float Input
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%_ptr_Function_v4float = OpTypePointer Function %v4float
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%_ptr_Output_v4float = OpTypePointer Output %v4float
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%gl_FragColor = OpVariable %_ptr_Output_v4float Output
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)";
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const std::string before =
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R"(%main = OpFunction %void None %9
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%19 = OpLabel
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%s2 = OpVariable %_ptr_Function_S2_t Function
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%20 = OpLoad %v4float %BaseColor
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%21 = OpAccessChain %_ptr_Function_v4float %s2 %int_1 %int_0
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OpStore %21 %20
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%22 = OpAccessChain %_ptr_Function_v4float %s2 %int_1 %int_0
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%23 = OpLoad %v4float %22
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OpStore %gl_FragColor %23
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OpReturn
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OpFunctionEnd
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)";
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const std::string after =
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R"(%main = OpFunction %void None %9
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%19 = OpLabel
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%s2 = OpVariable %_ptr_Function_S2_t Function
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%20 = OpLoad %v4float %BaseColor
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%24 = OpLoad %S2_t %s2
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%25 = OpCompositeInsert %S2_t %20 %24 1 0
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OpStore %s2 %25
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%26 = OpLoad %S2_t %s2
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%27 = OpCompositeExtract %v4float %26 1 0
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OpStore %gl_FragColor %27
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OpReturn
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OpFunctionEnd
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)";
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SinglePassRunAndCheck<opt::LocalAccessChainConvertPass>(
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predefs_before + before, predefs_after + after, true, true);
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}
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TEST_F(LocalAccessChainConvertTest, DynamicallyIndexedVarNotConverted) {
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// #version 140
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//
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// in vec4 BaseColor;
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// flat in int Idx;
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// in float Bi;
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//
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// struct S_t {
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// vec4 v0;
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// vec4 v1;
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// };
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//
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// void main()
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// {
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// S_t s0;
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// s0.v1 = BaseColor;
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// s0.v1[Idx] = Bi;
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// gl_FragColor = s0.v1;
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// }
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const std::string assembly =
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R"(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" %BaseColor %Idx %Bi %gl_FragColor
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OpExecutionMode %main OriginUpperLeft
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OpSource GLSL 140
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OpName %main "main"
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OpName %S_t "S_t"
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OpMemberName %S_t 0 "v0"
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OpMemberName %S_t 1 "v1"
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OpName %s0 "s0"
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OpName %BaseColor "BaseColor"
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OpName %Idx "Idx"
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OpName %Bi "Bi"
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OpName %gl_FragColor "gl_FragColor"
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OpDecorate %Idx Flat
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%void = OpTypeVoid
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%10 = OpTypeFunction %void
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%float = OpTypeFloat 32
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%v4float = OpTypeVector %float 4
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%S_t = OpTypeStruct %v4float %v4float
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%_ptr_Function_S_t = OpTypePointer Function %S_t
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%int = OpTypeInt 32 1
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%int_1 = OpConstant %int 1
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%_ptr_Input_v4float = OpTypePointer Input %v4float
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%BaseColor = OpVariable %_ptr_Input_v4float Input
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%_ptr_Function_v4float = OpTypePointer Function %v4float
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%_ptr_Input_int = OpTypePointer Input %int
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%Idx = OpVariable %_ptr_Input_int Input
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%_ptr_Input_float = OpTypePointer Input %float
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%Bi = OpVariable %_ptr_Input_float Input
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%_ptr_Function_float = OpTypePointer Function %float
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%_ptr_Output_v4float = OpTypePointer Output %v4float
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%gl_FragColor = OpVariable %_ptr_Output_v4float Output
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%main = OpFunction %void None %10
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%22 = OpLabel
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%s0 = OpVariable %_ptr_Function_S_t Function
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%23 = OpLoad %v4float %BaseColor
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%24 = OpAccessChain %_ptr_Function_v4float %s0 %int_1
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OpStore %24 %23
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%25 = OpLoad %int %Idx
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%26 = OpLoad %float %Bi
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%27 = OpAccessChain %_ptr_Function_float %s0 %int_1 %25
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OpStore %27 %26
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%28 = OpAccessChain %_ptr_Function_v4float %s0 %int_1
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%29 = OpLoad %v4float %28
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OpStore %gl_FragColor %29
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OpReturn
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OpFunctionEnd
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)";
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SinglePassRunAndCheck<opt::LocalAccessChainConvertPass>(assembly, assembly,
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false, true);
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}
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TEST_F(LocalAccessChainConvertTest, SomeAccessChainsHaveNoUse) {
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// Based on HLSL source code:
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// struct S {
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// float f;
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// };
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// float main(float input : A) : B {
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// S local = { input };
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// return local.f;
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// }
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const std::string predefs = R"(OpCapability Shader
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OpMemoryModel Logical GLSL450
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OpEntryPoint Vertex %main "main" %in_var_A %out_var_B
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OpName %main "main"
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OpName %in_var_A "in.var.A"
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OpName %out_var_B "out.var.B"
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OpName %S "S"
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OpName %local "local"
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%int = OpTypeInt 32 1
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%void = OpTypeVoid
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%8 = OpTypeFunction %void
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%float = OpTypeFloat 32
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%_ptr_Function_float = OpTypePointer Function %float
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%_ptr_Input_float = OpTypePointer Input %float
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%_ptr_Output_float = OpTypePointer Output %float
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%S = OpTypeStruct %float
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%_ptr_Function_S = OpTypePointer Function %S
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%int_0 = OpConstant %int 0
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%in_var_A = OpVariable %_ptr_Input_float Input
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%out_var_B = OpVariable %_ptr_Output_float Output
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%main = OpFunction %void None %8
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%15 = OpLabel
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%local = OpVariable %_ptr_Function_S Function
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%16 = OpLoad %float %in_var_A
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%17 = OpCompositeConstruct %S %16
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OpStore %local %17
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)";
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const std::string before =
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R"(%18 = OpAccessChain %_ptr_Function_float %local %int_0
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%19 = OpAccessChain %_ptr_Function_float %local %int_0
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%20 = OpLoad %float %18
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OpStore %out_var_B %20
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OpReturn
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OpFunctionEnd
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)";
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const std::string after =
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R"(%19 = OpAccessChain %_ptr_Function_float %local %int_0
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%21 = OpLoad %S %local
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%22 = OpCompositeExtract %float %21 0
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OpStore %out_var_B %22
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OpReturn
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OpFunctionEnd
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)";
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SinglePassRunAndCheck<opt::LocalAccessChainConvertPass>(
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predefs + before, predefs + after, true, true);
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}
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// TODO(greg-lunarg): Add tests to verify handling of these cases:
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//
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// Assorted vector and matrix types
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// Assorted struct array types
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// Assorted scalar types
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// Assorted non-target types
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// OpInBoundsAccessChain
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// Others?
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} // anonymous namespace
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