xkslang/gtests/TestFixture.h

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//
// Copyright (C) 2016 Google, Inc.
//
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#ifndef GLSLANG_GTESTS_TEST_FIXTURE_H
#define GLSLANG_GTESTS_TEST_FIXTURE_H
#include <cstdint>
#include <fstream>
#include <sstream>
#include <streambuf>
#include <tuple>
#include <string>
#include <gtest/gtest.h>
#include "SPIRV/GlslangToSpv.h"
#include "SPIRV/disassemble.h"
#include "SPIRV/doc.h"
#include "SPIRV/SPVRemapper.h"
#include "StandAlone/ResourceLimits.h"
#include "glslang/Public/ShaderLang.h"
#include "Initializer.h"
#include "Settings.h"
namespace glslangtest {
// This function is used to provide custom test name suffixes based on the
// shader source file names. Otherwise, the test name suffixes will just be
// numbers, which are not quite obvious.
std::string FileNameAsCustomTestSuffix(
const ::testing::TestParamInfo<std::string>& info);
enum class Source {
GLSL,
HLSL,
};
// Enum for shader compilation semantics.
enum class Semantics {
OpenGL,
Vulkan,
};
// Enum for compilation target.
enum class Target {
AST,
Spv,
BothASTAndSpv,
};
EShLanguage GetShaderStage(const std::string& stage);
EShMessages DeriveOptions(Source, Semantics, Target);
// Reads the content of the file at the given |path|. On success, returns true
// and the contents; otherwise, returns false and an empty string.
std::pair<bool, std::string> ReadFile(const std::string& path);
std::pair<bool, std::vector<std::uint32_t> > ReadSpvBinaryFile(const std::string& path);
// Writes the given |contents| into the file at the given |path|. Returns true
// on successful output.
bool WriteFile(const std::string& path, const std::string& contents);
// Returns the suffix of the given |name|.
std::string GetSuffix(const std::string& name);
// Base class for glslang integration tests. It contains many handy utility-like
// methods such as reading shader source files, compiling into AST/SPIR-V, and
// comparing with expected outputs.
//
// To write value-Parameterized tests:
// using ValueParamTest = GlslangTest<::testing::TestWithParam<std::string>>;
// To use as normal fixture:
// using FixtureTest = GlslangTest<::testing::Test>;
template <typename GT>
class GlslangTest : public GT {
public:
GlslangTest()
: defaultVersion(100),
defaultProfile(ENoProfile),
forceVersionProfile(false),
isForwardCompatible(false) {}
// Tries to load the contents from the file at the given |path|. On success,
// writes the contents into |contents|. On failure, errors out.
void tryLoadFile(const std::string& path, const std::string& tag,
std::string* contents)
{
bool fileReadOk;
std::tie(fileReadOk, *contents) = ReadFile(path);
ASSERT_TRUE(fileReadOk) << "Cannot open " << tag << " file: " << path;
}
// Tries to load the contents from the file at the given |path|. On success,
// writes the contents into |contents|. On failure, errors out.
void tryLoadSpvFile(const std::string& path, const std::string& tag,
std::vector<uint32_t>& contents)
{
bool fileReadOk;
std::tie(fileReadOk, contents) = ReadSpvBinaryFile(path);
ASSERT_TRUE(fileReadOk) << "Cannot open " << tag << " file: " << path;
}
// Checks the equality of |expected| and |real|. If they are not equal,
// write |real| to the given file named as |fname| if update mode is on.
void checkEqAndUpdateIfRequested(const std::string& expected,
const std::string& real,
const std::string& fname)
{
// In order to output the message we want under proper circumstances,
// we need the following operator<< stuff.
EXPECT_EQ(expected, real)
<< (GlobalTestSettings.updateMode
? ("Mismatch found and update mode turned on - "
"flushing expected result output.")
: "");
// Update the expected output file if requested.
// It looks weird to duplicate the comparison between expected_output
// and stream.str(). However, if creating a variable for the comparison
// result, we cannot have pretty print of the string diff in the above.
if (GlobalTestSettings.updateMode && expected != real) {
EXPECT_TRUE(WriteFile(fname, real)) << "Flushing failed";
}
}
struct ShaderResult {
std::string shaderName;
std::string output;
std::string error;
};
// A struct for holding all the information returned by glslang compilation
// and linking.
struct GlslangResult {
std::vector<ShaderResult> shaderResults;
std::string linkingOutput;
std::string linkingError;
std::string spirvWarningsErrors;
std::string spirv; // Optional SPIR-V disassembly text.
};
// Compiles and the given source |code| of the given shader |stage| into
// the target under the semantics conveyed via |controls|. Returns true
// and modifies |shader| on success.
bool compile(glslang::TShader* shader, const std::string& code,
const std::string& entryPointName, EShMessages controls,
const TBuiltInResource* resources=nullptr)
{
const char* shaderStrings = code.data();
const int shaderLengths = static_cast<int>(code.size());
shader->setStringsWithLengths(&shaderStrings, &shaderLengths, 1);
if (!entryPointName.empty()) shader->setEntryPoint(entryPointName.c_str());
return shader->parse(
(resources ? resources : &glslang::DefaultTBuiltInResource),
defaultVersion, isForwardCompatible, controls);
}
// Compiles and links the given source |code| of the given shader
// |stage| into the target under the semantics specified via |controls|.
// Returns a GlslangResult instance containing all the information generated
// during the process. If the target includes SPIR-V, also disassembles
// the result and returns disassembly text.
GlslangResult compileAndLink(
const std::string shaderName, const std::string& code,
const std::string& entryPointName, EShMessages controls,
bool flattenUniformArrays = false,
EShTextureSamplerTransformMode texSampTransMode = EShTexSampTransKeep,
bool disableOptimizer = true)
{
const EShLanguage kind = GetShaderStage(GetSuffix(shaderName));
glslang::TShader shader(kind);
shader.setAutoMapLocations(true);
shader.setTextureSamplerTransformMode(texSampTransMode);
shader.setFlattenUniformArrays(flattenUniformArrays);
bool success = compile(&shader, code, entryPointName, controls);
glslang::TProgram program;
program.addShader(&shader);
success &= program.link(controls);
spv::SpvBuildLogger logger;
if (success && (controls & EShMsgSpvRules)) {
std::vector<uint32_t> spirv_binary;
glslang::SpvOptions options;
options.disableOptimizer = disableOptimizer;
glslang::GlslangToSpv(*program.getIntermediate(kind),
spirv_binary, &logger, &options);
std::ostringstream disassembly_stream;
spv::Parameterize();
spv::Disassemble(disassembly_stream, spirv_binary);
return {{{shaderName, shader.getInfoLog(), shader.getInfoDebugLog()},},
program.getInfoLog(), program.getInfoDebugLog(),
logger.getAllMessages(), disassembly_stream.str()};
} else {
return {{{shaderName, shader.getInfoLog(), shader.getInfoDebugLog()},},
program.getInfoLog(), program.getInfoDebugLog(), "", ""};
}
}
// Compiles and links the given source |code| of the given shader
// |stage| into the target under the semantics specified via |controls|.
// Returns a GlslangResult instance containing all the information generated
// during the process. If the target includes SPIR-V, also disassembles
// the result and returns disassembly text.
GlslangResult compileLinkIoMap(
const std::string shaderName, const std::string& code,
const std::string& entryPointName, EShMessages controls,
int baseSamplerBinding,
int baseTextureBinding,
int baseImageBinding,
int baseUboBinding,
int baseSsboBinding,
bool autoMapBindings,
bool flattenUniformArrays)
{
const EShLanguage kind = GetShaderStage(GetSuffix(shaderName));
glslang::TShader shader(kind);
shader.setShiftSamplerBinding(baseSamplerBinding);
shader.setShiftTextureBinding(baseTextureBinding);
shader.setShiftImageBinding(baseImageBinding);
shader.setShiftUboBinding(baseUboBinding);
shader.setShiftSsboBinding(baseSsboBinding);
shader.setAutoMapBindings(autoMapBindings);
shader.setAutoMapLocations(true);
shader.setFlattenUniformArrays(flattenUniformArrays);
bool success = compile(&shader, code, entryPointName, controls);
glslang::TProgram program;
program.addShader(&shader);
success &= program.link(controls);
success &= program.mapIO();
spv::SpvBuildLogger logger;
if (success && (controls & EShMsgSpvRules)) {
std::vector<uint32_t> spirv_binary;
glslang::GlslangToSpv(*program.getIntermediate(kind),
spirv_binary, &logger);
std::ostringstream disassembly_stream;
spv::Parameterize();
spv::Disassemble(disassembly_stream, spirv_binary);
return {{{shaderName, shader.getInfoLog(), shader.getInfoDebugLog()},},
program.getInfoLog(), program.getInfoDebugLog(),
logger.getAllMessages(), disassembly_stream.str()};
} else {
return {{{shaderName, shader.getInfoLog(), shader.getInfoDebugLog()},},
program.getInfoLog(), program.getInfoDebugLog(), "", ""};
}
}
// This is like compileAndLink but with remapping of the SPV binary
// through spirvbin_t::remap(). While technically this could be merged
// with compileAndLink() above (with the remap step optionally being a no-op)
// it is given separately here for ease of future extraction.
GlslangResult compileLinkRemap(
const std::string shaderName, const std::string& code,
const std::string& entryPointName, EShMessages controls,
const unsigned int remapOptions = spv::spirvbin_t::NONE)
{
const EShLanguage kind = GetShaderStage(GetSuffix(shaderName));
glslang::TShader shader(kind);
shader.setAutoMapLocations(true);
bool success = compile(&shader, code, entryPointName, controls);
glslang::TProgram program;
program.addShader(&shader);
success &= program.link(controls);
spv::SpvBuildLogger logger;
if (success && (controls & EShMsgSpvRules)) {
std::vector<uint32_t> spirv_binary;
glslang::GlslangToSpv(*program.getIntermediate(kind),
spirv_binary, &logger);
spv::spirvbin_t(0 /*verbosity*/).remap(spirv_binary, remapOptions);
std::ostringstream disassembly_stream;
spv::Parameterize();
spv::Disassemble(disassembly_stream, spirv_binary);
return {{{shaderName, shader.getInfoLog(), shader.getInfoDebugLog()},},
program.getInfoLog(), program.getInfoDebugLog(),
logger.getAllMessages(), disassembly_stream.str()};
} else {
return {{{shaderName, shader.getInfoLog(), shader.getInfoDebugLog()},},
program.getInfoLog(), program.getInfoDebugLog(), "", ""};
}
}
// remap the binary in 'code' with the options in remapOptions
GlslangResult remap(
const std::string shaderName, const std::vector<uint32_t>& code,
EShMessages controls,
const unsigned int remapOptions = spv::spirvbin_t::NONE)
{
if ((controls & EShMsgSpvRules)) {
std::vector<uint32_t> spirv_binary(code); // scratch copy
spv::spirvbin_t(0 /*verbosity*/).remap(spirv_binary, remapOptions);
std::ostringstream disassembly_stream;
spv::Parameterize();
spv::Disassemble(disassembly_stream, spirv_binary);
return {{{shaderName, "", ""},},
"", "",
"", disassembly_stream.str()};
} else {
return {{{shaderName, "", ""},}, "", "", "", ""};
}
}
void outputResultToStream(std::ostringstream* stream,
const GlslangResult& result,
EShMessages controls)
{
const auto outputIfNotEmpty = [&stream](const std::string& str) {
if (!str.empty()) *stream << str << "\n";
};
for (const auto& shaderResult : result.shaderResults) {
*stream << shaderResult.shaderName << "\n";
outputIfNotEmpty(shaderResult.output);
outputIfNotEmpty(shaderResult.error);
}
outputIfNotEmpty(result.linkingOutput);
outputIfNotEmpty(result.linkingError);
*stream << result.spirvWarningsErrors;
if (controls & EShMsgSpvRules) {
*stream
<< (result.spirv.empty()
? "SPIR-V is not generated for failed compile or link\n"
: result.spirv);
}
}
void loadFileCompileAndCheck(const std::string& testDir,
const std::string& testName,
Source source,
Semantics semantics,
Target target,
const std::string& entryPointName="",
const std::string& baseDir="/baseResults/",
const bool disableOptimizer = true)
{
const std::string inputFname = testDir + "/" + testName;
const std::string expectedOutputFname =
testDir + baseDir + testName + ".out";
std::string input, expectedOutput;
tryLoadFile(inputFname, "input", &input);
tryLoadFile(expectedOutputFname, "expected output", &expectedOutput);
const EShMessages controls = DeriveOptions(source, semantics, target);
GlslangResult result = compileAndLink(testName, input, entryPointName, controls, false, EShTexSampTransKeep, disableOptimizer);
// Generate the hybrid output in the way of glslangValidator.
std::ostringstream stream;
outputResultToStream(&stream, result, controls);
checkEqAndUpdateIfRequested(expectedOutput, stream.str(),
expectedOutputFname);
}
void loadFileCompileFlattenUniformsAndCheck(const std::string& testDir,
const std::string& testName,
Source source,
Semantics semantics,
Target target,
const std::string& entryPointName="")
{
const std::string inputFname = testDir + "/" + testName;
const std::string expectedOutputFname =
testDir + "/baseResults/" + testName + ".out";
std::string input, expectedOutput;
tryLoadFile(inputFname, "input", &input);
tryLoadFile(expectedOutputFname, "expected output", &expectedOutput);
const EShMessages controls = DeriveOptions(source, semantics, target);
GlslangResult result = compileAndLink(testName, input, entryPointName, controls, true);
// Generate the hybrid output in the way of glslangValidator.
std::ostringstream stream;
outputResultToStream(&stream, result, controls);
checkEqAndUpdateIfRequested(expectedOutput, stream.str(),
expectedOutputFname);
}
void loadFileCompileIoMapAndCheck(const std::string& testDir,
const std::string& testName,
Source source,
Semantics semantics,
Target target,
const std::string& entryPointName,
int baseSamplerBinding,
int baseTextureBinding,
int baseImageBinding,
int baseUboBinding,
int baseSsboBinding,
bool autoMapBindings,
bool flattenUniformArrays)
{
const std::string inputFname = testDir + "/" + testName;
const std::string expectedOutputFname =
testDir + "/baseResults/" + testName + ".out";
std::string input, expectedOutput;
tryLoadFile(inputFname, "input", &input);
tryLoadFile(expectedOutputFname, "expected output", &expectedOutput);
const EShMessages controls = DeriveOptions(source, semantics, target);
GlslangResult result = compileLinkIoMap(testName, input, entryPointName, controls,
baseSamplerBinding, baseTextureBinding, baseImageBinding,
baseUboBinding, baseSsboBinding,
autoMapBindings,
flattenUniformArrays);
// Generate the hybrid output in the way of glslangValidator.
std::ostringstream stream;
outputResultToStream(&stream, result, controls);
checkEqAndUpdateIfRequested(expectedOutput, stream.str(),
expectedOutputFname);
}
void loadFileCompileRemapAndCheck(const std::string& testDir,
const std::string& testName,
Source source,
Semantics semantics,
Target target,
const std::string& entryPointName="",
const unsigned int remapOptions = spv::spirvbin_t::NONE)
{
const std::string inputFname = testDir + "/" + testName;
const std::string expectedOutputFname =
testDir + "/baseResults/" + testName + ".out";
std::string input, expectedOutput;
tryLoadFile(inputFname, "input", &input);
tryLoadFile(expectedOutputFname, "expected output", &expectedOutput);
const EShMessages controls = DeriveOptions(source, semantics, target);
GlslangResult result = compileLinkRemap(testName, input, entryPointName, controls, remapOptions);
// Generate the hybrid output in the way of glslangValidator.
std::ostringstream stream;
outputResultToStream(&stream, result, controls);
checkEqAndUpdateIfRequested(expectedOutput, stream.str(),
expectedOutputFname);
}
void loadFileRemapAndCheck(const std::string& testDir,
const std::string& testName,
Source source,
Semantics semantics,
Target target,
const unsigned int remapOptions = spv::spirvbin_t::NONE)
{
const std::string inputFname = testDir + "/" + testName;
const std::string expectedOutputFname =
testDir + "/baseResults/" + testName + ".out";
std::vector<std::uint32_t> input;
std::string expectedOutput;
tryLoadSpvFile(inputFname, "input", input);
tryLoadFile(expectedOutputFname, "expected output", &expectedOutput);
const EShMessages controls = DeriveOptions(source, semantics, target);
GlslangResult result = remap(testName, input, controls, remapOptions);
// Generate the hybrid output in the way of glslangValidator.
std::ostringstream stream;
outputResultToStream(&stream, result, controls);
checkEqAndUpdateIfRequested(expectedOutput, stream.str(),
expectedOutputFname);
}
// Preprocesses the given |source| code. On success, returns true, the
// preprocessed shader, and warning messages. Otherwise, returns false, an
// empty string, and error messages.
std::tuple<bool, std::string, std::string> preprocess(
const std::string& source)
{
const char* shaderStrings = source.data();
const int shaderLengths = static_cast<int>(source.size());
glslang::TShader shader(EShLangVertex);
shader.setStringsWithLengths(&shaderStrings, &shaderLengths, 1);
std::string ppShader;
glslang::TShader::ForbidIncluder includer;
const bool success = shader.preprocess(
&glslang::DefaultTBuiltInResource, defaultVersion, defaultProfile,
forceVersionProfile, isForwardCompatible, (EShMessages)(EShMsgOnlyPreprocessor | EShMsgCascadingErrors),
&ppShader, includer);
std::string log = shader.getInfoLog();
log += shader.getInfoDebugLog();
if (success) {
return std::make_tuple(true, ppShader, log);
} else {
return std::make_tuple(false, "", log);
}
}
void loadFilePreprocessAndCheck(const std::string& testDir,
const std::string& testName)
{
const std::string inputFname = testDir + "/" + testName;
const std::string expectedOutputFname =
testDir + "/baseResults/" + testName + ".out";
const std::string expectedErrorFname =
testDir + "/baseResults/" + testName + ".err";
std::string input, expectedOutput, expectedError;
tryLoadFile(inputFname, "input", &input);
tryLoadFile(expectedOutputFname, "expected output", &expectedOutput);
tryLoadFile(expectedErrorFname, "expected error", &expectedError);
bool ppOk;
std::string output, error;
std::tie(ppOk, output, error) = preprocess(input);
if (!output.empty()) output += '\n';
if (!error.empty()) error += '\n';
checkEqAndUpdateIfRequested(expectedOutput, output,
expectedOutputFname);
checkEqAndUpdateIfRequested(expectedError, error,
expectedErrorFname);
}
void loadCompileUpgradeTextureToSampledTextureAndDropSamplersAndCheck(const std::string& testDir,
const std::string& testName,
Source source,
Semantics semantics,
Target target,
const std::string& entryPointName = "")
{
const std::string inputFname = testDir + "/" + testName;
const std::string expectedOutputFname = testDir + "/baseResults/" + testName + ".out";
std::string input, expectedOutput;
tryLoadFile(inputFname, "input", &input);
tryLoadFile(expectedOutputFname, "expected output", &expectedOutput);
const EShMessages controls = DeriveOptions(source, semantics, target);
GlslangResult result = compileAndLink(testName, input, entryPointName, controls, false, EShTexSampTransUpgradeTextureRemoveSampler);
// Generate the hybrid output in the way of glslangValidator.
std::ostringstream stream;
outputResultToStream(&stream, result, controls);
checkEqAndUpdateIfRequested(expectedOutput, stream.str(),
expectedOutputFname);
}
private:
const int defaultVersion;
const EProfile defaultProfile;
const bool forceVersionProfile;
const bool isForwardCompatible;
};
} // namespace glslangtest
#endif // GLSLANG_GTESTS_TEST_FIXTURE_H