Program * ProgramManager::AddProgram(const String &vertFileName, const String &fragFileName)
{
ProgramMapIterator it = mPrograms.find(vertFileName);
if (it != mPrograms.end())
return (*it).second;
InputStream *vertStream = FileSystem::GetPtr()->GetInputStream(vertFileName);
if (!vertStream)
{
LogError("Unable to open vertex shader file %s", vertFileName);
return NULL;
}
InputStream *fragStream = FileSystem::GetPtr()->GetInputStream(fragFileName);
if (!fragStream)
{
LogError("Unable to open fragment shader file %s", fragFileName);
return NULL;
}
Program *program = mGraphicsDevice->CreateProgram(vertFileName);
if (!program->LoadShader(Program::ShaderType_Vertex, vertStream))
{
LogError("Unable to load vertex shader %s", vertStream->GetFileName());
SafeDelete(program);
return NULL;
}
if (!program->LoadShader(Program::ShaderType_Fragment, fragStream))
{
LogError("Unable to load frag shader %s", fragStream->GetFileName());
SafeDelete(program);
return NULL;
}
if (!program->Link())
{
LogError("Unable to link program %s", vertStream->GetFileName());
SafeDelete(program);
return NULL;
}
mPrograms[vertStream->GetFileName()] = program;
return program;
}
