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

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• Author : apatrick@chromium.org
  Date : 2012-01-23 20:04:48
  Hash : b66a7015
  Message : Moved RefCountObject to common so it can be used by libEGL. Review URL: https://codereview.appspot.com/5557064 git-svn-id: https://angleproject.googlecode.com/svn/trunk@956 736b8ea6-26fd-11df-bfd4-992fa37f6226

• src/libGLESv2/Renderbuffer.h

• //
  // 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 "common/RefCountObject.h"
  
  namespace gl
  {
  class Texture;
  class Renderbuffer;
  class Colorbuffer;
  class DepthStencilbuffer;
  
  class RenderbufferInterface
  {
    public:
      RenderbufferInterface();
  
      virtual ~RenderbufferInterface() {};
  
      virtual void addProxyRef(const Renderbuffer *proxy);
      virtual void releaseProxy(const Renderbuffer *proxy);
  
      virtual IDirect3DSurface9 *getRenderTarget() = 0;
      virtual IDirect3DSurface9 *getDepthStencil() = 0;
  
      virtual GLsizei getWidth() const = 0;
      virtual GLsizei getHeight() const = 0;
      virtual GLenum getInternalFormat() const = 0;
      virtual D3DFORMAT getD3DFormat() const = 0;
      virtual GLsizei getSamples() const = 0;
  
      GLuint getRedSize() const;
      GLuint getGreenSize() const;
      GLuint getBlueSize() const;
      GLuint getAlphaSize() const;
      GLuint getDepthSize() const;
      GLuint getStencilSize() const;
  
      virtual unsigned int getSerial() const = 0;
  
    private:
      DISALLOW_COPY_AND_ASSIGN(RenderbufferInterface);
  };
  
  class RenderbufferTexture : public RenderbufferInterface
  {
    public:
      RenderbufferTexture(Texture *texture, GLenum target);
  
      virtual ~RenderbufferTexture();
  
      void addProxyRef(const Renderbuffer *proxy);
      void releaseProxy(const Renderbuffer *proxy);
  
      IDirect3DSurface9 *getRenderTarget();
      IDirect3DSurface9 *getDepthStencil();
  
      virtual GLsizei getWidth() const;
      virtual GLsizei getHeight() const;
      virtual GLenum getInternalFormat() const;
      virtual D3DFORMAT getD3DFormat() const;
      virtual GLsizei getSamples() const;
  
      virtual unsigned int getSerial() const;
  
    private:
      DISALLOW_COPY_AND_ASSIGN(RenderbufferTexture);
  
      BindingPointer <Texture> mTexture;
      GLenum mTarget;
  };
  
  // 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 RenderbufferInterface
  {
    public:
      RenderbufferStorage();
  
      virtual ~RenderbufferStorage() = 0;
  
      virtual IDirect3DSurface9 *getRenderTarget();
      virtual IDirect3DSurface9 *getDepthStencil();
  
      virtual GLsizei getWidth() const;
      virtual GLsizei getHeight() const;
      virtual GLenum getInternalFormat() const;
      virtual D3DFORMAT getD3DFormat() const;
      virtual GLsizei getSamples() const;
  
      virtual unsigned int getSerial() const;
  
      static unsigned int issueSerial();
      static unsigned int issueCubeSerials();
  
    protected:
      GLsizei mWidth;
      GLsizei mHeight;
      GLenum mInternalFormat;
      D3DFORMAT mD3DFormat;
      GLsizei mSamples;
  
    private:
      DISALLOW_COPY_AND_ASSIGN(RenderbufferStorage);
  
      const unsigned int mSerial;
  
      static unsigned int mCurrentSerial;
  };
  
  // Renderbuffer implements the GL renderbuffer object.
  // It's only a proxy for a RenderbufferInterface instance; the internal object
  // can change whenever glRenderbufferStorage is called.
  class Renderbuffer : public RefCountObject
  {
    public:
      Renderbuffer(GLuint id, RenderbufferInterface *storage);
  
      virtual ~Renderbuffer();
  
      // These functions from RefCountObject are overloaded here because
      // Textures need to maintain their own count of references to them via
      // Renderbuffers/RenderbufferTextures. These functions invoke those
      // reference counting functions on the RenderbufferInterface.
      void addRef() const;
      void release() const;
  
      IDirect3DSurface9 *getRenderTarget();
      IDirect3DSurface9 *getDepthStencil();
  
      GLsizei getWidth() const;
      GLsizei getHeight() const;
      GLenum getInternalFormat() const;
      D3DFORMAT getD3DFormat() const;
      GLuint getRedSize() const;
      GLuint getGreenSize() const;
      GLuint getBlueSize() const;
      GLuint getAlphaSize() const;
      GLuint getDepthSize() const;
      GLuint getStencilSize() const;
      GLsizei getSamples() const;
  
      unsigned int getSerial() const;
  
      void setStorage(RenderbufferStorage *newStorage);
  
    private:
      DISALLOW_COPY_AND_ASSIGN(Renderbuffer);
  
      RenderbufferInterface *mInstance;
  };
  
  class Colorbuffer : public RenderbufferStorage
  {
    public:
      explicit Colorbuffer(IDirect3DSurface9 *renderTarget);
      Colorbuffer(GLsizei width, GLsizei height, GLenum format, GLsizei samples);
  
      virtual ~Colorbuffer();
  
      virtual IDirect3DSurface9 *getRenderTarget();
  
    private:
      DISALLOW_COPY_AND_ASSIGN(Colorbuffer);
  
      IDirect3DSurface9 *mRenderTarget;
  };
  
  class DepthStencilbuffer : public RenderbufferStorage
  {
    public:
      explicit DepthStencilbuffer(IDirect3DSurface9 *depthStencil);
      DepthStencilbuffer(GLsizei width, GLsizei height, GLsizei samples);
  
      ~DepthStencilbuffer();
  
      virtual IDirect3DSurface9 *getDepthStencil();
  
    protected:
      IDirect3DSurface9 *mDepthStencil;
  
    private:
      DISALLOW_COPY_AND_ASSIGN(DepthStencilbuffer);
  };
  
  class Depthbuffer : public DepthStencilbuffer
  {
    public:
      explicit Depthbuffer(IDirect3DSurface9 *depthStencil);
      Depthbuffer(GLsizei width, GLsizei height, GLsizei samples);
  
      virtual ~Depthbuffer();
  
    private:
      DISALLOW_COPY_AND_ASSIGN(Depthbuffer);
  };
  
  class Stencilbuffer : public DepthStencilbuffer
  {
    public:
      explicit Stencilbuffer(IDirect3DSurface9 *depthStencil);
      Stencilbuffer(GLsizei width, GLsizei height, GLsizei samples);
  
      virtual ~Stencilbuffer();
  
    private:
      DISALLOW_COPY_AND_ASSIGN(Stencilbuffer);
  };
  }
  
  #endif   // LIBGLESV2_RENDERBUFFER_H_