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#include <algorithm>
#include <gtest/gtest.h>
#include "TestFixture.h"
#include "glslang/MachineIndependent/iomapper.h"
#include "glslang/MachineIndependent/reflection.h"
namespace glslangtest {
namespace {
struct IoMapData {
std::vector<std::string> fileNames;
Semantics semantics;
};
using GlslMapIOTest = GlslangTest <::testing::TestWithParam<IoMapData>>;
template<class T>
std::string interfaceName(T symbol) {
return symbol.getType()->getBasicType() == glslang::EbtBlock ? std::string(symbol.getType()->getTypeName().c_str()) : symbol.name;
}
bool verifyIOMapping(std::string& linkingError, glslang::TProgram& program) {
bool success = true;
// Verify IO Mapping by generating reflection for each stage individually
// and comparing layout qualifiers on the results
int reflectionOptions = EShReflectionDefault;
//reflectionOptions |= EShReflectionStrictArraySuffix;
//reflectionOptions |= EShReflectionBasicArraySuffix;
reflectionOptions |= EShReflectionIntermediateIO;
reflectionOptions |= EShReflectionSeparateBuffers;
reflectionOptions |= EShReflectionAllBlockVariables;
//reflectionOptions |= EShReflectionUnwrapIOBlocks;
success &= program.buildReflection(reflectionOptions);
// check that the reflection output from the individual stages all makes sense..
std::vector<glslang::TReflection> stageReflections;
for (int s = 0; s < EShLangCount; ++s) {
if (program.getIntermediate((EShLanguage)s)) {
stageReflections.emplace_back((EShReflectionOptions)reflectionOptions, (EShLanguage)s, (EShLanguage)s);
success &= stageReflections.back().addStage((EShLanguage)s, *program.getIntermediate((EShLanguage)s));
}
}
// check that input/output locations match between stages
auto it = stageReflections.begin();
auto nextIt = it + 1;
for (; nextIt != stageReflections.end(); it++, nextIt++) {
int numOut = it->getNumPipeOutputs();
std::map<std::string, const glslang::TObjectReflection*> pipeOut;
for (int i = 0; i < numOut; i++) {
const glslang::TObjectReflection& out = it->getPipeOutput(i);
std::string name = interfaceName(out);
pipeOut[name] = &out;
}
int numIn = nextIt->getNumPipeInputs();
for (int i = 0; i < numIn; i++) {
auto in = nextIt->getPipeInput(i);
std::string name = interfaceName(in);
auto out = pipeOut.find(name);
if (out != pipeOut.end()) {
auto inQualifier = in.getType()->getQualifier();
auto outQualifier = out->second->getType()->getQualifier();
success &= outQualifier.layoutLocation == inQualifier.layoutLocation;
}
else {
if (!in.getType()->isStruct()) {
bool found = false;
for (auto outIt : pipeOut) {
if (outIt.second->getType()->isStruct()) {
unsigned int baseLoc = outIt.second->getType()->getQualifier().hasLocation() ?
outIt.second->getType()->getQualifier().layoutLocation :
std::numeric_limits<unsigned int>::max();
for (size_t j = 0; j < outIt.second->getType()->getStruct()->size(); j++) {
baseLoc = (*outIt.second->getType()->getStruct())[j].type->getQualifier().hasLocation() ?
(*outIt.second->getType()->getStruct())[j].type->getQualifier().layoutLocation : baseLoc;
if (baseLoc != std::numeric_limits<unsigned int>::max()) {
if (baseLoc == in.getType()->getQualifier().layoutLocation) {
found = true;
break;
}
baseLoc += glslang::TIntermediate::computeTypeLocationSize(*(*outIt.second->getType()->getStruct())[j].type, EShLangVertex);
}
}
if (found) {
break;
}
}
}
success &= found;
}
else {
unsigned int baseLoc = in.getType()->getQualifier().hasLocation() ? in.getType()->getQualifier().layoutLocation : -1;
for (size_t j = 0; j < in.getType()->getStruct()->size(); j++) {
baseLoc = (*in.getType()->getStruct())[j].type->getQualifier().hasLocation() ?
(*in.getType()->getStruct())[j].type->getQualifier().layoutLocation : baseLoc;
if (baseLoc != std::numeric_limits<unsigned int>::max()) {
bool isMemberFound = false;
for (auto outIt : pipeOut) {
if (baseLoc == outIt.second->getType()->getQualifier().layoutLocation) {
isMemberFound = true;
break;
}
}
if (!isMemberFound) {
success &= false;
break;
}
baseLoc += glslang::TIntermediate::computeTypeLocationSize(*(*in.getType()->getStruct())[j].type, EShLangVertex);
}
}
}
}
}
}
// compare uniforms in each stage to the program
{
int totalUniforms = program.getNumUniformVariables();
std::map<std::string, const glslang::TObjectReflection*> programUniforms;
for (int i = 0; i < totalUniforms; i++) {
const glslang::TObjectReflection& uniform = program.getUniform(i);
std::string name = interfaceName(uniform);
programUniforms[name] = &uniform;
}
it = stageReflections.begin();
for (; it != stageReflections.end(); it++) {
int numUniform = it->getNumUniforms();
std::map<std::string, glslang::TObjectReflection> uniforms;
for (int i = 0; i < numUniform; i++) {
glslang::TObjectReflection uniform = it->getUniform(i);
std::string name = interfaceName(uniform);
auto programUniform = programUniforms.find(name);
if (programUniform != programUniforms.end()) {
auto stageQualifier = uniform.getType()->getQualifier();
auto programQualifier = programUniform->second->getType()->getQualifier();
success &= stageQualifier.layoutLocation == programQualifier.layoutLocation;
success &= stageQualifier.layoutBinding == programQualifier.layoutBinding;
success &= stageQualifier.layoutSet == programQualifier.layoutSet;
}
else {
success &= false;
}
}
}
}
// compare uniform blocks in each stage to the program table
{
int totalUniforms = program.getNumUniformBlocks();
std::map<std::string, const glslang::TObjectReflection*> programUniforms;
for (int i = 0; i < totalUniforms; i++) {
const glslang::TObjectReflection& uniform = program.getUniformBlock(i);
std::string name = interfaceName(uniform);
programUniforms[name] = &uniform;
}
it = stageReflections.begin();
for (; it != stageReflections.end(); it++) {
int numUniform = it->getNumUniformBlocks();
std::map<std::string, glslang::TObjectReflection> uniforms;
for (int i = 0; i < numUniform; i++) {
glslang::TObjectReflection uniform = it->getUniformBlock(i);
std::string name = interfaceName(uniform);
auto programUniform = programUniforms.find(name);
if (programUniform != programUniforms.end()) {
auto stageQualifier = uniform.getType()->getQualifier();
auto programQualifier = programUniform->second->getType()->getQualifier();
success &= stageQualifier.layoutLocation == programQualifier.layoutLocation;
success &= stageQualifier.layoutBinding == programQualifier.layoutBinding;
success &= stageQualifier.layoutSet == programQualifier.layoutSet;
}
else {
success &= false;
}
}
}
}
if (!success) {
linkingError += "Mismatched cross-stage IO\n";
}
return success;
}
TEST_P(GlslMapIOTest, FromFile)
{
const auto& fileNames = GetParam().fileNames;
Semantics semantics = GetParam().semantics;
const size_t fileCount = fileNames.size();
const EShMessages controls = DeriveOptions(Source::GLSL, semantics, Target::BothASTAndSpv);
GlslangResult result;
// Compile each input shader file.
bool success = true;
std::vector<std::unique_ptr<glslang::TShader>> shaders;
for (size_t i = 0; i < fileCount; ++i) {
std::string contents;
tryLoadFile(GlobalTestSettings.testRoot + "/" + fileNames[i],
"input", &contents);
shaders.emplace_back(
new glslang::TShader(GetShaderStage(GetSuffix(fileNames[i]))));
auto* shader = shaders.back().get();
shader->setAutoMapLocations(true);
shader->setAutoMapBindings(true);
if (controls & EShMsgSpvRules) {
if (controls & EShMsgVulkanRules) {
shader->setEnvInput((controls & EShMsgReadHlsl) ? glslang::EShSourceHlsl
: glslang::EShSourceGlsl,
shader->getStage(), glslang::EShClientVulkan, 100);
shader->setEnvClient(glslang::EShClientVulkan, glslang::EShTargetVulkan_1_1);
shader->setEnvTarget(glslang::EShTargetSpv, glslang::EShTargetSpv_1_0);
} else {
shader->setEnvInput((controls & EShMsgReadHlsl) ? glslang::EShSourceHlsl
: glslang::EShSourceGlsl,
shader->getStage(), glslang::EShClientOpenGL, 100);
shader->setEnvClient(glslang::EShClientOpenGL, glslang::EShTargetOpenGL_450);
shader->setEnvTarget(glslang::EshTargetSpv, glslang::EShTargetSpv_1_0);
}
}
success &= compile(shader, contents, "", controls);
result.shaderResults.push_back(
{ fileNames[i], shader->getInfoLog(), shader->getInfoDebugLog() });
}
// Link all of them.
glslang::TProgram program;
for (const auto& shader : shaders) program.addShader(shader.get());
success &= program.link(controls);
result.linkingOutput = program.getInfoLog();
result.linkingError = program.getInfoDebugLog();
unsigned int stage = 0;
glslang::TIntermediate* firstIntermediate = nullptr;
while (!program.getIntermediate((EShLanguage)stage) && stage < EShLangCount) { stage++; }
firstIntermediate = program.getIntermediate((EShLanguage)stage);
glslang::TDefaultGlslIoResolver resolver(*firstIntermediate);
glslang::TGlslIoMapper ioMapper;
if (success) {
success &= program.mapIO(&resolver, &ioMapper);
result.linkingOutput = program.getInfoLog();
result.linkingError = program.getInfoDebugLog();
}
success &= verifyIOMapping(result.linkingError, program);
result.validationResult = success;
if (success && (controls & EShMsgSpvRules)) {
for (int stage = 0; stage < EShLangCount; ++stage) {
if (program.getIntermediate((EShLanguage)stage)) {
spv::SpvBuildLogger logger;
std::vector<uint32_t> spirv_binary;
options().disableOptimizer = false;
glslang::GlslangToSpv(*program.getIntermediate((EShLanguage)stage),
spirv_binary, &logger, &options());
std::ostringstream disassembly_stream;
spv::Parameterize();
spv::Disassemble(disassembly_stream, spirv_binary);
result.spirvWarningsErrors += logger.getAllMessages();
result.spirv += disassembly_stream.str();
result.validationResult &= !options().validate || logger.getAllMessages().empty();
}
}
}
std::ostringstream stream;
outputResultToStream(&stream, result, controls);
// Check with expected results.
const std::string expectedOutputFname =
GlobalTestSettings.testRoot + "/baseResults/" + fileNames.front() + ".out";
std::string expectedOutput;
tryLoadFile(expectedOutputFname, "expected output", &expectedOutput);
checkEqAndUpdateIfRequested(expectedOutput, stream.str(), expectedOutputFname,
result.spirvWarningsErrors);
}
// clang-format off
INSTANTIATE_TEST_SUITE_P(
Glsl, GlslMapIOTest,
::testing::ValuesIn(std::vector<IoMapData>({
{{"iomap.crossStage.vert", "iomap.crossStage.frag" }, Semantics::OpenGL},
{{"iomap.crossStage.2.vert", "iomap.crossStage.2.geom", "iomap.crossStage.2.frag" }, Semantics::OpenGL},
{{"iomap.blockOutVariableIn.vert", "iomap.blockOutVariableIn.frag"}, Semantics::OpenGL},
{{"iomap.variableOutBlockIn.vert", "iomap.variableOutBlockIn.frag"}, Semantics::OpenGL},
{{"iomap.blockOutVariableIn.2.vert", "iomap.blockOutVariableIn.geom"}, Semantics::OpenGL},
{{"iomap.variableOutBlockIn.2.vert", "iomap.variableOutBlockIn.geom"}, Semantics::OpenGL},
// vulkan semantics
{{"iomap.crossStage.vk.vert", "iomap.crossStage.vk.geom", "iomap.crossStage.vk.frag" }, Semantics::Vulkan},
}))
);
// clang-format on
} // anonymous namespace
} // namespace glslangtest