src/libGLESv2/renderer/IndexDataManager.h

//
// Copyright (c) 2002-2012 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.
//

// 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 <vector>
#include <cstddef>

#define GL_APICALL
#include <GLES2/gl2.h>

#include "libGLESv2/Context.h"
#include "libGLESv2/renderer/IndexBuffer.h"

namespace
{
    enum { INITIAL_INDEX_BUFFER_SIZE = 4096 * sizeof(GLuint) };
}

namespace rx
{

struct TranslatedIndexData
{
    UINT minIndex;
    UINT maxIndex;
    UINT startIndex;
};

class IndexDataManager
{
  public:
    IndexDataManager(rx::Renderer9 *renderer);
    virtual ~IndexDataManager();

    GLenum prepareIndexData(GLenum type, GLsizei count, gl::Buffer *arrayElementBuffer, const GLvoid *indices, TranslatedIndexData *translated, IDirect3DIndexBuffer9 **indexBuffer, unsigned int *serial);
    StaticIndexBuffer *getCountingIndices(GLsizei count);

  private:
    DISALLOW_COPY_AND_ASSIGN(IndexDataManager);

    std::size_t typeSize(GLenum type) const;
    std::size_t indexSize(D3DFORMAT format) const;

    rx::Renderer9 *const mRenderer;   // D3D9_REPLACE

    StreamingIndexBuffer *mStreamingBufferShort;
    StreamingIndexBuffer *mStreamingBufferInt;
    StaticIndexBuffer *mCountingBuffer;
};

}

#endif   // LIBGLESV2_INDEXDATAMANAGER_H_