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// SwiftShader Software Renderer
//
// Copyright(c) 2005-2012 TransGaming Inc.
//
// All rights reserved. No part of this software may be copied, distributed, transmitted,
// transcribed, stored in a retrieval system, translated into any human or computer
// language by any means, or disclosed to third parties without the explicit written
// agreement of TransGaming Inc. Without such an agreement, no rights or licenses, express
// or implied, including but not limited to any patent rights, are granted to you.
//
// IndexDataManager.h: Defines the IndexDataManager, a class that
// runs the Buffer translation process for index buffers.
#ifndef LIBGLESV2_INDEXDATAMANAGER_H_
#define LIBGLESV2_INDEXDATAMANAGER_H_
#include "Context.h"
#define GL_APICALL
#include <GLES2/gl2.h>
namespace gl
{
struct TranslatedIndexData
{
unsigned int minIndex;
unsigned int maxIndex;
unsigned int indexOffset;
sw::Resource *indexBuffer;
};
class StreamingIndexBuffer
{
public:
StreamingIndexBuffer(unsigned int initialSize);
virtual ~StreamingIndexBuffer();
void *map(unsigned int requiredSpace, unsigned int *offset);
void unmap();
void reserveSpace(unsigned int requiredSpace, GLenum type);
sw::Resource *getResource() const;
private:
sw::Resource *mIndexBuffer;
unsigned int mBufferSize;
unsigned int mWritePosition;
};
class IndexDataManager
{
public:
IndexDataManager();
virtual ~IndexDataManager();
GLenum prepareIndexData(GLenum type, GLsizei count, Buffer *arrayElementBuffer, const void *indices, TranslatedIndexData *translated);
static std::size_t typeSize(GLenum type);
private:
StreamingIndexBuffer *mStreamingBuffer;
};
}
#endif // LIBGLESV2_INDEXDATAMANAGER_H_