/*-------------------------------------------------------------------------
 * drawElements Quality Program EGL Module
 * ---------------------------------------
 *
 * Copyright 2014 The Android Open Source Project
 *
 * 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.
 *
 *//*!
 * \file
 * \brief glw::FunctionLoader using eglGetProcAddress() and tcu::Library.
 *//*--------------------------------------------------------------------*/

#include "egluGLFunctionLoader.hpp"
#include "egluPlatform.hpp"
#include "eglwLibrary.hpp"
#include "tcuFunctionLibrary.hpp"

namespace eglu
{

GLFunctionLoader::GLFunctionLoader (const eglw::Library& egl, const tcu::FunctionLibrary* library)
	: m_egl		(egl)
	, m_library	(library)
{
}

glw::GenericFuncType GLFunctionLoader::get (const char* name) const
{
	glw::GenericFuncType func = (glw::GenericFuncType)m_library->getFunction(name);

	if (!func)
		return (glw::GenericFuncType)m_egl.getProcAddress(name);
	else
		return func;
}

GLLibraryCache::GLLibraryCache (const Platform& platform, const tcu::CommandLine& cmdLine)
	: m_platform	(platform)
	, m_cmdLine		(cmdLine)
{
}

GLLibraryCache::~GLLibraryCache (void)
{
	for (LibraryMap::iterator i = m_libraries.begin(); i != m_libraries.end(); ++i)
		delete i->second;
}

const tcu::FunctionLibrary* GLLibraryCache::getLibrary (glu::ApiType apiType)
{
	tcu::FunctionLibrary*	library	= DE_NULL;
	const deUint32			key		= apiType.getPacked();
	LibraryMap::iterator	iter	= m_libraries.find(key);

	if (iter == m_libraries.end())
	{
		library = m_platform.createDefaultGLFunctionLibrary(apiType, m_cmdLine);
		try
		{
			m_libraries.insert(std::make_pair(key, library));
		}
		catch (...)
		{
			delete library;
			throw;
		}
	}
	else
		library = iter->second;

	return library;
}

} // eglu