DiShaderProgram* DiShaderManager::LoadShader(const DiString& filename, uint64 flag)
{
DiShaderProgram* shader = NULL;
ShaderLibsIt it = mShaderLibs.find(filename);
if(it != mShaderLibs.end())
{
DiMap<uint64,DiShaderProgram*>::iterator flagIt =
it->second.find(flag);
if(flagIt != it->second.end())
return flagIt->second;
}
shader = DI_NEW DiShaderProgram(filename);
BOOL ret = shader->Load();
if(!ret)
{
DI_WARNING("Failed to load the shader : %s", filename.c_str());
DI_DELETE shader;
return NULL;
}
DiShaderType type = shader->GetShaderType();
DiCompileDesc desc;
desc.entryName = type == SHADER_VERTEX?"vs_main":"ps_main";
desc.profile = DiShaderProgram::GetDefaultProfile(type);
ModifyMarcosByFlag(flag,desc);
shader->Compile(desc);
mShaderLibs[filename].insert(DiMap<uint64,DiShaderProgram*>::iterator::value_type(flag,shader));
return shader;
}
