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// Copyright (c) 2021 The Khronos Group Inc.
// Copyright (c) 2021 Valve Corporation
// Copyright (c) 2021 LunarG Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include <vector>
#include "gmock/gmock.h"
#include "test/opt/pass_fixture.h"
#include "test/opt/pass_utils.h"
namespace spvtools {
namespace opt {
namespace {
using InterpFixupTest = PassTest<::testing::Test>;
using ::testing::HasSubstr;
TEST_F(InterpFixupTest, FixInterpAtSample) {
const std::string text = R"(
OpCapability Shader
OpCapability InterpolationFunction
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint Fragment %MainPs "MainPs" %i_vPositionOs %_entryPointOutput
OpExecutionMode %MainPs OriginUpperLeft
OpSource HLSL 500
OpName %MainPs "MainPs"
OpName %i_vPositionOs "i.vPositionOs"
OpName %_entryPointOutput "@entryPointOutput"
OpDecorate %i_vPositionOs Location 0
OpDecorate %_entryPointOutput Location 0
%void = OpTypeVoid
%6 = OpTypeFunction %void
%float = OpTypeFloat 32
%v4float = OpTypeVector %float 4
%float_0 = OpConstant %float 0
%10 = OpConstantComposite %v4float %float_0 %float_0 %float_0 %float_0
%uint = OpTypeInt 32 0
%uint_0 = OpConstant %uint 0
%uint_4 = OpConstant %uint 4
%bool = OpTypeBool
%int = OpTypeInt 32 1
%int_1 = OpConstant %int 1
%_ptr_Input_v4float = OpTypePointer Input %v4float
%i_vPositionOs = OpVariable %_ptr_Input_v4float Input
%_ptr_Output_v4float = OpTypePointer Output %v4float
%_entryPointOutput = OpVariable %_ptr_Output_v4float Output
%MainPs = OpFunction %void None %6
%19 = OpLabel
%20 = OpLoad %v4float %i_vPositionOs
OpBranch %21
%21 = OpLabel
%22 = OpPhi %v4float %10 %19 %23 %24
%25 = OpPhi %uint %uint_0 %19 %26 %24
%27 = OpULessThan %bool %25 %uint_4
OpLoopMerge %28 %24 None
OpBranchConditional %27 %24 %28
%24 = OpLabel
%29 = OpExtInst %v4float %1 InterpolateAtSample %20 %25
;CHECK: %29 = OpExtInst %v4float %1 InterpolateAtSample %i_vPositionOs %25
%30 = OpCompositeExtract %float %29 0
%31 = OpCompositeExtract %float %22 0
%32 = OpFAdd %float %31 %30
%23 = OpCompositeInsert %v4float %32 %22 0
%26 = OpIAdd %uint %25 %int_1
OpBranch %21
%28 = OpLabel
OpStore %_entryPointOutput %22
OpReturn
OpFunctionEnd
)";
SinglePassRunAndMatch<InterpFixupPass>(text, false);
}
TEST_F(InterpFixupTest, FixInterpAtCentroid) {
const std::string text = R"(
OpCapability Shader
OpCapability InterpolationFunction
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint Fragment %MainPs "MainPs" %i_vPositionOs %_entryPointOutput
OpExecutionMode %MainPs OriginUpperLeft
OpSource HLSL 500
OpName %MainPs "MainPs"
OpName %i_vPositionOs "i.vPositionOs"
OpName %_entryPointOutput "@entryPointOutput"
OpDecorate %i_vPositionOs Location 0
OpDecorate %_entryPointOutput Location 0
%void = OpTypeVoid
%6 = OpTypeFunction %void
%float = OpTypeFloat 32
%v4float = OpTypeVector %float 4
%float_0 = OpConstant %float 0
%10 = OpConstantComposite %v4float %float_0 %float_0 %float_0 %float_0
%_ptr_Input_v4float = OpTypePointer Input %v4float
%i_vPositionOs = OpVariable %_ptr_Input_v4float Input
%_ptr_Output_v4float = OpTypePointer Output %v4float
%_entryPointOutput = OpVariable %_ptr_Output_v4float Output
%MainPs = OpFunction %void None %6
%13 = OpLabel
%14 = OpLoad %v4float %i_vPositionOs
%15 = OpExtInst %v4float %1 InterpolateAtCentroid %14
;CHECK: %15 = OpExtInst %v4float %1 InterpolateAtCentroid %i_vPositionOs
%16 = OpCompositeExtract %float %15 0
%17 = OpCompositeInsert %v4float %16 %10 0
OpStore %_entryPointOutput %17
OpReturn
OpFunctionEnd
)";
SinglePassRunAndMatch<InterpFixupPass>(text, false);
}
TEST_F(InterpFixupTest, FixInterpAtOffset) {
const std::string text = R"(
OpCapability Shader
OpCapability InterpolationFunction
%1 = OpExtInstImport "GLSL.std.450"
OpMemoryModel Logical GLSL450
OpEntryPoint Fragment %MainPs "MainPs" %i_vPositionOs %_entryPointOutput
OpExecutionMode %MainPs OriginUpperLeft
OpSource HLSL 500
OpName %MainPs "MainPs"
OpName %i_vPositionOs "i.vPositionOs"
OpName %_entryPointOutput "@entryPointOutput"
OpDecorate %i_vPositionOs Location 0
OpDecorate %_entryPointOutput Location 0
%void = OpTypeVoid
%6 = OpTypeFunction %void
%float = OpTypeFloat 32
%v4float = OpTypeVector %float 4
%float_0 = OpConstant %float 0
%10 = OpConstantComposite %v4float %float_0 %float_0 %float_0 %float_0
%v2float = OpTypeVector %float 2
%float_0_0625 = OpConstant %float 0.0625
%13 = OpConstantComposite %v2float %float_0_0625 %float_0_0625
%_ptr_Input_v4float = OpTypePointer Input %v4float
%i_vPositionOs = OpVariable %_ptr_Input_v4float Input
%_ptr_Output_v4float = OpTypePointer Output %v4float
%_entryPointOutput = OpVariable %_ptr_Output_v4float Output
%MainPs = OpFunction %void None %6
%16 = OpLabel
%17 = OpLoad %v4float %i_vPositionOs
%18 = OpExtInst %v4float %1 InterpolateAtOffset %17 %13
;CHECK: %18 = OpExtInst %v4float %1 InterpolateAtOffset %i_vPositionOs %13
%19 = OpCompositeExtract %float %18 0
%20 = OpCompositeInsert %v4float %19 %10 0
OpStore %_entryPointOutput %20
OpReturn
OpFunctionEnd
)";
SinglePassRunAndMatch<InterpFixupPass>(text, false);
}
} // namespace
} // namespace opt
} // namespace spvtools
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