/*-------------------------------------------------------------------------
 * drawElements Quality Program OpenGL ES Utilities
 * ------------------------------------------------
 *
 * 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 Simplified GLES reference context.
 *//*--------------------------------------------------------------------*/

#include "sglrContext.hpp"
#include "sglrGLContext.hpp"
#include "gluTextureUtil.hpp"

#include "glwEnums.hpp"

namespace sglr
{

using std::vector;

void Context::texImage2D (deUint32 target, int level, deUint32 internalFormat, const tcu::Surface& src)
{
	int		width	= src.getWidth();
	int		height	= src.getHeight();
	texImage2D(target, level, internalFormat, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, src.getAccess().getDataPtr());
}

void Context::texImage2D (deUint32 target, int level, deUint32 internalFormat, int width, int height)
{
	deUint32	format		= GL_NONE;
	deUint32	dataType	= GL_NONE;

	switch (internalFormat)
	{
		case GL_ALPHA:
		case GL_LUMINANCE:
		case GL_LUMINANCE_ALPHA:
		case GL_RGB:
		case GL_RGBA:
			format		= internalFormat;
			dataType	= GL_UNSIGNED_BYTE;
			break;

		default:
		{
			glu::TransferFormat transferFmt = glu::getTransferFormat(glu::mapGLInternalFormat(internalFormat));
			format		= transferFmt.format;
			dataType	= transferFmt.dataType;
			break;
		}
	}

	texImage2D(target, level, internalFormat, width, height, 0, format, dataType, DE_NULL);
}

void Context::texSubImage2D (deUint32 target, int level, int xoffset, int yoffset, const tcu::Surface& src)
{
	int		width	= src.getWidth();
	int		height	= src.getHeight();
	texSubImage2D(target, level, xoffset, yoffset, width, height, GL_RGBA, GL_UNSIGNED_BYTE, src.getAccess().getDataPtr());
}

void Context::readPixels (tcu::Surface& dst, int x, int y, int width, int height)
{
	dst.setSize(width, height);
	readPixels(x, y, width, height, GL_RGBA, GL_UNSIGNED_BYTE, dst.getAccess().getDataPtr());
}

} // sglr