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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.
//
// Renderbuffer.h: Defines the wrapper class gl::Renderbuffer, as well as the
// class hierarchy used to store its contents: RenderbufferStorage, Colorbuffer,
// DepthStencilbuffer, Depthbuffer and Stencilbuffer. Implements GL renderbuffer
// objects and related functionality. [OpenGL ES 2.0.24] section 4.4.3 page 108.
#ifndef LIBGLESV2_RENDERBUFFER_H_
#define LIBGLESV2_RENDERBUFFER_H_
#define GL_APICALL
#include <GLES2/gl2.h>
#include <d3d9.h>
#include "common/angleutils.h"
#include "libGLESv2/RefCountObject.h"
namespace gl
{
class Texture;
// A class derived from RenderbufferStorage is created whenever glRenderbufferStorage
// is called. The specific concrete type depends on whether the internal format is
// colour depth, stencil or packed depth/stencil.
class RenderbufferStorage
{
public:
RenderbufferStorage();
virtual ~RenderbufferStorage() = 0;
virtual bool isColorbuffer() const;
virtual bool isDepthbuffer() const;
virtual bool isStencilbuffer() const;
virtual IDirect3DSurface9 *getRenderTarget();
virtual IDirect3DSurface9 *getDepthStencil();
virtual int getWidth() const;
virtual int getHeight() const;
virtual GLenum getFormat() const;
virtual bool isFloatingPoint() const;
D3DFORMAT getD3DFormat() const;
GLsizei getSamples() const;
unsigned int getSerial() const;
static unsigned int issueSerial();
protected:
void setSize(int width, int height);
GLenum mFormat;
D3DFORMAT mD3DFormat;
GLsizei mSamples;
const unsigned int mSerial;
private:
DISALLOW_COPY_AND_ASSIGN(RenderbufferStorage);
static unsigned int mCurrentSerial;
int mWidth;
int mHeight;
};
// Renderbuffer implements the GL renderbuffer object.
// It's only a wrapper for a RenderbufferStorage, but the internal object
// can change whenever glRenderbufferStorage is called.
class Renderbuffer : public RefCountObject
{
public:
Renderbuffer(GLuint id, RenderbufferStorage *storage);
~Renderbuffer();
bool isColorbuffer() const;
bool isDepthbuffer() const;
bool isStencilbuffer() const;
IDirect3DSurface9 *getRenderTarget();
IDirect3DSurface9 *getDepthStencil();
int getWidth() const;
int getHeight() const;
GLenum getFormat() const;
D3DFORMAT getD3DFormat() const;
unsigned int getSerial() const;
void setStorage(RenderbufferStorage *newStorage);
RenderbufferStorage *getStorage() { return mStorage; }
private:
DISALLOW_COPY_AND_ASSIGN(Renderbuffer);
RenderbufferStorage *mStorage;
};
class Colorbuffer : public RenderbufferStorage
{
public:
explicit Colorbuffer(IDirect3DSurface9 *renderTarget);
explicit Colorbuffer(const Texture* texture);
Colorbuffer(int width, int height, GLenum format, GLsizei samples);
~Colorbuffer();
bool isColorbuffer() const;
GLuint getRedSize() const;
GLuint getGreenSize() const;
GLuint getBlueSize() const;
GLuint getAlphaSize() const;
IDirect3DSurface9 *getRenderTarget();
protected:
IDirect3DSurface9 *mRenderTarget;
private:
DISALLOW_COPY_AND_ASSIGN(Colorbuffer);
};
class DepthStencilbuffer : public RenderbufferStorage
{
public:
explicit DepthStencilbuffer(IDirect3DSurface9 *depthStencil);
DepthStencilbuffer(int width, int height, GLsizei samples);
~DepthStencilbuffer();
virtual bool isDepthbuffer() const;
virtual bool isStencilbuffer() const;
GLuint getDepthSize() const;
GLuint getStencilSize() const;
IDirect3DSurface9 *getDepthStencil();
private:
DISALLOW_COPY_AND_ASSIGN(DepthStencilbuffer);
IDirect3DSurface9 *mDepthStencil;
};
class Depthbuffer : public DepthStencilbuffer
{
public:
explicit Depthbuffer(IDirect3DSurface9 *depthStencil);
Depthbuffer(int width, int height, GLsizei samples);
~Depthbuffer();
bool isDepthbuffer() const;
bool isStencilbuffer() const;
private:
DISALLOW_COPY_AND_ASSIGN(Depthbuffer);
};
class Stencilbuffer : public DepthStencilbuffer
{
public:
explicit Stencilbuffer(IDirect3DSurface9 *depthStencil);
Stencilbuffer(int width, int height, GLsizei samples);
~Stencilbuffer();
bool isDepthbuffer() const;
bool isStencilbuffer() const;
private:
DISALLOW_COPY_AND_ASSIGN(Stencilbuffer);
};
}
#endif // LIBGLESV2_RENDERBUFFER_H_
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