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/*
* Copyright 2019-2021 Diligent Graphics LLC
* Copyright 2015-2019 Egor Yusov
*
* 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.
*
* In no event and under no legal theory, whether in tort (including negligence),
* contract, or otherwise, unless required by applicable law (such as deliberate
* and grossly negligent acts) or agreed to in writing, shall any Contributor be
* liable for any damages, including any direct, indirect, special, incidental,
* or consequential damages of any character arising as a result of this License or
* out of the use or inability to use the software (including but not limited to damages
* for loss of goodwill, work stoppage, computer failure or malfunction, or any and
* all other commercial damages or losses), even if such Contributor has been advised
* of the possibility of such damages.
*/
#include "HLSL2GLSLConverterApp.h"
#include "Errors.hpp"
#include "HLSL2GLSLConverterImpl.hpp"
#include "RefCntAutoPtr.hpp"
#include "Errors.hpp"
#include "EngineFactoryOpenGL.h"
#include "RefCntAutoPtr.hpp"
#include "DataBlobImpl.hpp"
#include "FileWrapper.hpp"
#include "StringTools.hpp"
namespace Diligent
{
HLSL2GLSLConverterApp::HLSL2GLSLConverterApp()
{
#if EXPLICITLY_LOAD_ENGINE_GL_DLL
// Declare function pointer
auto GetEngineFactoryOpenGL = LoadGraphicsEngineOpenGL();
if (GetEngineFactoryOpenGL == nullptr)
{
LOG_ERROR_MESSAGE("Failed to load OpenGL engine implementation");
return -1;
}
#endif
m_pFactoryGL = GetEngineFactoryOpenGL();
}
void HLSL2GLSLConverterApp::PrintHelp()
{
LOG_INFO_MESSAGE("Command line arguments:\n");
LOG_INFO_MESSAGE("-h Print help message\n");
LOG_INFO_MESSAGE("-i <filename> Input file path (relative to the search directories)\n");
LOG_INFO_MESSAGE("-d <dirname> Search directory to look for input file path as well as all #include files");
LOG_INFO_MESSAGE(" Every search directory should be specified using -d argument\n");
LOG_INFO_MESSAGE("-o <filename> Output file to write converted GLSL source to\n");
LOG_INFO_MESSAGE("-e <funcname> Shader entry point\n");
LOG_INFO_MESSAGE("-c Compile converted GLSL shader\n");
LOG_INFO_MESSAGE("-t <type> Shader type. Allowed values:");
LOG_INFO_MESSAGE(" vs - vertex shader");
LOG_INFO_MESSAGE(" ps - pixel shader");
LOG_INFO_MESSAGE(" gs - geometry shader");
LOG_INFO_MESSAGE(" ds - domain shader");
LOG_INFO_MESSAGE(" hs - domain shader");
LOG_INFO_MESSAGE(" cs - domain shader\n");
LOG_INFO_MESSAGE("-noglsldef Do not include glsl definitions into the converted source\n");
LOG_INFO_MESSAGE("-nolocations Do not use shader input/output locations qualifiers.\n"
" Shader stage interface linking will rely on exact name matching.\n");
}
int HLSL2GLSLConverterApp::ParseCmdLine(int argc, char** argv)
{
for (int a = 1; a < argc; ++a)
{
if (StrCmpNoCase(argv[a], "-h") == 0)
{
PrintHelp();
}
else if (StrCmpNoCase(argv[a], "-i") == 0 && a + 1 < argc)
{
m_InputPath = argv[++a];
}
else if (StrCmpNoCase(argv[a], "-o") == 0 && a + 1 < argc)
{
m_OutputPath = argv[++a];
}
else if (StrCmpNoCase(argv[a], "-d") == 0 && a + 1 < argc)
{
if (!m_SearchDirectories.empty())
m_SearchDirectories.push_back(';');
m_SearchDirectories += argv[++a];
}
else if (StrCmpNoCase(argv[a], "-e") == 0 && a + 1 < argc)
{
m_EntryPoint = argv[++a];
}
else if (StrCmpNoCase(argv[a], "-c") == 0)
{
m_CompileShader = true;
}
else if (StrCmpNoCase(argv[a], "-t") == 0 && a + 1 < argc)
{
++a;
if (StrCmpNoCase(argv[a], "vs") == 0)
m_ShaderType = SHADER_TYPE_VERTEX;
else if (StrCmpNoCase(argv[a], "gs") == 0)
m_ShaderType = SHADER_TYPE_GEOMETRY;
else if (StrCmpNoCase(argv[a], "ps") == 0)
m_ShaderType = SHADER_TYPE_PIXEL;
else if (StrCmpNoCase(argv[a], "hs") == 0)
m_ShaderType = SHADER_TYPE_HULL;
else if (StrCmpNoCase(argv[a], "ds") == 0)
m_ShaderType = SHADER_TYPE_DOMAIN;
else if (StrCmpNoCase(argv[a], "cs") == 0)
m_ShaderType = SHADER_TYPE_COMPUTE;
else
{
LOG_ERROR_MESSAGE("Unknown shader type ", argv[a], "; Allowed values: vs,gs,ps,ds,hs,cs");
return -1;
}
}
else if (StrCmpNoCase(argv[a], "-noglsldef") == 0)
{
m_IncludeGLSLDefintions = false;
}
else if (StrCmpNoCase(argv[a], "-nolocations") == 0)
{
m_UseInOutLocations = false;
}
else
{
LOG_ERROR_MESSAGE("Unknown command line option ", argv[a]);
return -1;
}
}
return 0;
}
int HLSL2GLSLConverterApp::Convert(IRenderDevice* pDevice)
{
if (m_InputPath.length() == 0)
{
LOG_ERROR_MESSAGE("Input file path not specified; use -i command line option");
return -1;
}
if (m_ShaderType == SHADER_TYPE_UNKNOWN)
{
LOG_ERROR_MESSAGE("Shader type not specified; use -t [vs;ps;gs;ds;hs;cs] command line option");
return -1;
}
LOG_INFO_MESSAGE("Converting \'", m_InputPath, "\' to GLSL...");
RefCntAutoPtr<IShaderSourceInputStreamFactory> pShaderSourceFactory;
m_pFactoryGL->CreateDefaultShaderSourceStreamFactory(m_SearchDirectories.c_str(), &pShaderSourceFactory);
RefCntAutoPtr<IFileStream> pInputFileStream;
pShaderSourceFactory->CreateInputStream(m_InputPath.c_str(), &pInputFileStream);
if (!pInputFileStream)
{
return -1;
}
RefCntAutoPtr<Diligent::IDataBlob> pHLSLSourceBlob(MakeNewRCObj<DataBlobImpl>()(0));
pInputFileStream->ReadBlob(pHLSLSourceBlob);
auto* HLSLSource = reinterpret_cast<char*>(pHLSLSourceBlob->GetDataPtr());
auto SourceLen = static_cast<Int32>(pHLSLSourceBlob->GetSize());
const auto& Converter = HLSL2GLSLConverterImpl::GetInstance();
RefCntAutoPtr<IHLSL2GLSLConversionStream> pStream;
Converter.CreateStream(m_InputPath.c_str(), pShaderSourceFactory, HLSLSource, SourceLen, &pStream);
RefCntAutoPtr<Diligent::IDataBlob> pGLSLSourceBlob;
pStream->Convert(m_EntryPoint.c_str(), m_ShaderType, m_IncludeGLSLDefintions, "_sampler", m_UseInOutLocations, &pGLSLSourceBlob);
if (!pGLSLSourceBlob) return -1;
LOG_INFO_MESSAGE("Done");
if (m_OutputPath.length() != 0)
{
FileWrapper pOutputFile(m_OutputPath.c_str(), EFileAccessMode::Overwrite);
if (pOutputFile != nullptr)
{
if (!pOutputFile->Write(pGLSLSourceBlob->GetDataPtr(), pGLSLSourceBlob->GetSize()))
{
LOG_ERROR_MESSAGE("Failed to write converted source to output file ", m_OutputPath);
return -1;
}
}
else
{
LOG_ERROR_MESSAGE("Failed to open output file ", m_OutputPath);
return -1;
}
}
if (pDevice != nullptr)
{
LOG_INFO_MESSAGE("Compiling entry point \'", m_EntryPoint, "\' in converted file \'", m_InputPath, '\'');
ShaderCreateInfo ShaderCI;
ShaderCI.EntryPoint = m_EntryPoint.c_str();
ShaderCI.Desc.ShaderType = m_ShaderType;
ShaderCI.Desc.Name = "Test shader";
ShaderCI.Source = reinterpret_cast<char*>(pGLSLSourceBlob->GetDataPtr());
ShaderCI.SourceLanguage = SHADER_SOURCE_LANGUAGE_GLSL;
ShaderCI.UseCombinedTextureSamplers = true;
RefCntAutoPtr<IShader> pTestShader;
pDevice->CreateShader(ShaderCI, &pTestShader);
if (!pTestShader)
{
LOG_ERROR_MESSAGE("Failed to compile converted source \'", m_InputPath, '\'');
return -1;
}
LOG_INFO_MESSAGE("Done");
}
return 0;
}
} // namespace Diligent
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