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//
// Copyright (c) 2002-2010 The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// geometry/IndexDataManager.h: Defines the IndexDataManager, a class that
// runs the Buffer translation process for index buffers.
#ifndef LIBGLESV2_GEOMETRY_INDEXDATAMANAGER_H_
#define LIBGLESV2_GEOMETRY_INDEXDATAMANAGER_H_
#include <bitset>
#include <cstddef>
#define GL_APICALL
#include <GLES2/gl2.h>
#include "libGLESv2/Context.h"
namespace gl
{
class Buffer;
class BufferBackEnd;
class TranslatedIndexBuffer;
struct FormatConverter;
struct TranslatedIndexData
{
GLuint minIndex;
GLuint maxIndex;
GLuint count;
GLuint indexSize;
TranslatedIndexBuffer *buffer;
GLsizei offset;
};
class IndexDataManager
{
public:
IndexDataManager(Context *context, BufferBackEnd *backend);
~IndexDataManager();
GLenum preRenderValidate(GLenum mode, GLenum type, GLsizei count, Buffer *arrayElementBuffer, const void *indices, TranslatedIndexData *translated);
GLenum preRenderValidateUnindexed(GLenum mode, GLsizei count, TranslatedIndexData *indexInfo);
private:
std::size_t IndexDataManager::typeSize(GLenum type) const;
std::size_t IndexDataManager::indexSize(GLenum type) const;
std::size_t spaceRequired(GLenum type, GLsizei count) const;
TranslatedIndexBuffer *prepareIndexBuffer(GLenum type, std::size_t requiredSpace);
Context *mContext;
BufferBackEnd *mBackend;
bool mIntIndicesSupported;
TranslatedIndexBuffer *mStreamBufferShort;
TranslatedIndexBuffer *mStreamBufferInt;
TranslatedIndexBuffer *mCountingBuffer;
GLsizei mCountingBufferSize;
TranslatedIndexBuffer *mLineLoopBuffer;
};
}
#endif // LIBGLESV2_GEOMETRY_INDEXDATAMANAGER_H_
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