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kc3-lang/angle/src/libGLESv2/Buffer.h

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  • Author : Jamie Madill
    Date : 2013-08-26 15:29:29
    Hash : 96b67e39
    Message : Make gl::Buffer::size() a const method. R=geofflang@chromium.org, shannonwoods@chromium.org ANGLEBUG=467 Review URL: https://codereview.appspot.com/12937045 Test=WebGL CTS 1.0.2

  • src/libGLESv2/Buffer.h 
  • //
// Copyright (c) 2002-2013 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.
//

// Buffer.h: Defines the gl::Buffer class, representing storage of vertex and/or
// index data. Implements GL buffer objects and related functionality.
// [OpenGL ES 2.0.24] section 2.9 page 21.

#ifndef LIBGLESV2_BUFFER_H_
#define LIBGLESV2_BUFFER_H_

#include "common/angleutils.h"
#include "common/RefCountObject.h"
#include "libGLESv2/renderer/IndexRangeCache.h"

namespace rx
{
class Renderer;
class BufferStorage;
class StaticIndexBufferInterface;
class StaticVertexBufferInterface;
};

namespace gl
{

class Buffer : public RefCountObject
{
  public:
    Buffer(rx::Renderer *renderer, GLuint id);

    virtual ~Buffer();

    void bufferData(const void *data, GLsizeiptr size, GLenum usage);
    void bufferSubData(const void *data, GLsizeiptr size, GLintptr offset);
    void copyBufferSubData(Buffer* source, GLintptr sourceOffset, GLintptr destOffset, GLsizeiptr size);

    GLenum usage() const;

    rx::BufferStorage *getStorage() const;
    unsigned int size() const;

    rx::StaticVertexBufferInterface *getStaticVertexBuffer();
    rx::StaticIndexBufferInterface *getStaticIndexBuffer();
    void invalidateStaticData();
    void promoteStaticUsage(int dataSize);

    rx::IndexRangeCache *getIndexRangeCache();

  private:
    DISALLOW_COPY_AND_ASSIGN(Buffer);

    rx::Renderer *mRenderer;
    GLenum mUsage;

    rx::BufferStorage *mBufferStorage;

    rx::IndexRangeCache mIndexRangeCache;

    rx::StaticVertexBufferInterface *mStaticVertexBuffer;
    rx::StaticIndexBufferInterface *mStaticIndexBuffer;
    unsigned int mUnmodifiedDataUse;
};

}

#endif   // LIBGLESV2_BUFFER_H_