//-----------------------------------------------------------------------------------
GpuProgramPtr ShaderManager::getGpuProgram(HlmsDatablock* dataBlock)
{
uint32 hash = dataBlock->getHash();
map<uint32, GpuProgramPtr>::iterator it = mShaderCache.find(hash);
if (it != mShaderCache.end())
{
return (*it).second;
}
String typeStr = FilePatterns[dataBlock->getShaderType()];
std::stringstream sstream;
sstream << std::hex << hash;
std::string hashString = sstream.str();
String name = hashString + typeStr;
// generate the shader code
String code = dataBlock->getTemplate()->getTemplate();
StringVectorPtr pieces = mShaderPiecesManager->getPieces(dataBlock->getLanguage(), dataBlock->getShaderType());
code = ShaderGenerator::parse(code, *(dataBlock->getPropertyMap()), pieces);
GpuProgramPtr gpuProgram = createGpuProgram(name, code, dataBlock);
mShaderCache[hash] = gpuProgram;
return gpuProgram;
}
//-----------------------------------------------------------------------------
bool ProgramManager::createGpuPrograms(ProgramSet* programSet)
{
// Before we start we need to make sure that the pixel shader input
// parameters are the same as the vertex output, this required by
// shader models 4 and 5.
// This change may incrase the number of register used in older shader
// models - this is why the check is present here.
bool isVs4 = GpuProgramManager::getSingleton().isSyntaxSupported("vs_4_0");
if (isVs4)
{
synchronizePixelnToBeVertexOut(programSet);
}
// Grab the matching writer.
const String& language = ShaderGenerator::getSingleton().getTargetLanguage();
ProgramWriterIterator itWriter = mProgramWritersMap.find(language);
ProgramWriter* programWriter = NULL;
// No writer found -> create new one.
if (itWriter == mProgramWritersMap.end())
{
programWriter = ProgramWriterManager::getSingletonPtr()->createProgramWriter(language);
mProgramWritersMap[language] = programWriter;
}
else
{
programWriter = itWriter->second;
}
ProgramProcessorIterator itProcessor = mProgramProcessorsMap.find(language);
ProgramProcessor* programProcessor = NULL;
if (itProcessor == mProgramProcessorsMap.end())
{
OGRE_EXCEPT(Exception::ERR_DUPLICATE_ITEM,
"Could not find processor for language '" + language,
"ProgramManager::createGpuPrograms");
}
programProcessor = itProcessor->second;
bool success;
// Call the pre creation of GPU programs method.
success = programProcessor->preCreateGpuPrograms(programSet);
if (success == false)
return false;
// Create the vertex shader program.
GpuProgramPtr vsGpuProgram;
vsGpuProgram = createGpuProgram(programSet->getCpuVertexProgram(),
programWriter,
language,
ShaderGenerator::getSingleton().getVertexShaderProfiles(),
ShaderGenerator::getSingleton().getVertexShaderProfilesList(),
ShaderGenerator::getSingleton().getShaderCachePath());
if (vsGpuProgram.isNull())
return false;
programSet->setGpuVertexProgram(vsGpuProgram);
//update flags
programSet->getGpuVertexProgram()->setSkeletalAnimationIncluded(
programSet->getCpuVertexProgram()->getSkeletalAnimationIncluded());
// Create the fragment shader program.
GpuProgramPtr psGpuProgram;
psGpuProgram = createGpuProgram(programSet->getCpuFragmentProgram(),
programWriter,
language,
ShaderGenerator::getSingleton().getFragmentShaderProfiles(),
ShaderGenerator::getSingleton().getFragmentShaderProfilesList(),
ShaderGenerator::getSingleton().getShaderCachePath());
if (psGpuProgram.isNull())
return false;
programSet->setGpuFragmentProgram(psGpuProgram);
// Call the post creation of GPU programs method.
success = programProcessor->postCreateGpuPrograms(programSet);
if (success == false)
return false;
return true;
}