michael@0: //
michael@0: // Copyright (c) 2002-2010 The ANGLE Project Authors. All rights reserved.
michael@0: // Use of this source code is governed by a BSD-style license that can be
michael@0: // found in the LICENSE file.
michael@0: //
michael@0: 
michael@0: // Renderbuffer.h: Defines the wrapper class gl::Renderbuffer, as well as the
michael@0: // class hierarchy used to store its contents: RenderbufferStorage, Colorbuffer,
michael@0: // DepthStencilbuffer, Depthbuffer and Stencilbuffer. Implements GL renderbuffer
michael@0: // objects and related functionality. [OpenGL ES 2.0.24] section 4.4.3 page 108.
michael@0: 
michael@0: #ifndef LIBGLESV2_RENDERBUFFER_H_
michael@0: #define LIBGLESV2_RENDERBUFFER_H_
michael@0: 
michael@0: #define GL_APICALL
michael@0: #include <GLES2/gl2.h>
michael@0: 
michael@0: #include "common/angleutils.h"
michael@0: #include "common/RefCountObject.h"
michael@0: 
michael@0: namespace rx
michael@0: {
michael@0: class Renderer;
michael@0: class SwapChain;
michael@0: class RenderTarget;
michael@0: }
michael@0: 
michael@0: namespace gl
michael@0: {
michael@0: class Texture2D;
michael@0: class TextureCubeMap;
michael@0: class Renderbuffer;
michael@0: class Colorbuffer;
michael@0: class DepthStencilbuffer;
michael@0: 
michael@0: class RenderbufferInterface
michael@0: {
michael@0:   public:
michael@0:     RenderbufferInterface();
michael@0: 
michael@0:     virtual ~RenderbufferInterface() {};
michael@0: 
michael@0:     virtual void addProxyRef(const Renderbuffer *proxy);
michael@0:     virtual void releaseProxy(const Renderbuffer *proxy);
michael@0: 
michael@0:     virtual rx::RenderTarget *getRenderTarget() = 0;
michael@0:     virtual rx::RenderTarget *getDepthStencil() = 0;
michael@0: 
michael@0:     virtual GLsizei getWidth() const = 0;
michael@0:     virtual GLsizei getHeight() const = 0;
michael@0:     virtual GLenum getInternalFormat() const = 0;
michael@0:     virtual GLenum getActualFormat() const = 0;
michael@0:     virtual GLsizei getSamples() const = 0;
michael@0: 
michael@0:     GLuint getRedSize() const;
michael@0:     GLuint getGreenSize() const;
michael@0:     GLuint getBlueSize() const;
michael@0:     GLuint getAlphaSize() const;
michael@0:     GLuint getDepthSize() const;
michael@0:     GLuint getStencilSize() const;
michael@0: 
michael@0:     virtual unsigned int getSerial() const = 0;
michael@0: 
michael@0:   private:
michael@0:     DISALLOW_COPY_AND_ASSIGN(RenderbufferInterface);
michael@0: };
michael@0: 
michael@0: class RenderbufferTexture2D : public RenderbufferInterface
michael@0: {
michael@0:   public:
michael@0:     RenderbufferTexture2D(Texture2D *texture, GLenum target);
michael@0: 
michael@0:     virtual ~RenderbufferTexture2D();
michael@0: 
michael@0:     void addProxyRef(const Renderbuffer *proxy);
michael@0:     void releaseProxy(const Renderbuffer *proxy);
michael@0: 
michael@0:     rx::RenderTarget *getRenderTarget();
michael@0:     rx::RenderTarget *getDepthStencil();
michael@0: 
michael@0:     virtual GLsizei getWidth() const;
michael@0:     virtual GLsizei getHeight() const;
michael@0:     virtual GLenum getInternalFormat() const;
michael@0:     virtual GLenum getActualFormat() const;
michael@0:     virtual GLsizei getSamples() const;
michael@0: 
michael@0:     virtual unsigned int getSerial() const;
michael@0: 
michael@0:   private:
michael@0:     DISALLOW_COPY_AND_ASSIGN(RenderbufferTexture2D);
michael@0: 
michael@0:     BindingPointer <Texture2D> mTexture2D;
michael@0:     GLenum mTarget;
michael@0: };
michael@0: 
michael@0: class RenderbufferTextureCubeMap : public RenderbufferInterface
michael@0: {
michael@0:   public:
michael@0:     RenderbufferTextureCubeMap(TextureCubeMap *texture, GLenum target);
michael@0: 
michael@0:     virtual ~RenderbufferTextureCubeMap();
michael@0: 
michael@0:     void addProxyRef(const Renderbuffer *proxy);
michael@0:     void releaseProxy(const Renderbuffer *proxy);
michael@0: 
michael@0:     rx::RenderTarget *getRenderTarget();
michael@0:     rx::RenderTarget *getDepthStencil();
michael@0: 
michael@0:     virtual GLsizei getWidth() const;
michael@0:     virtual GLsizei getHeight() const;
michael@0:     virtual GLenum getInternalFormat() const;
michael@0:     virtual GLenum getActualFormat() const;
michael@0:     virtual GLsizei getSamples() const;
michael@0: 
michael@0:     virtual unsigned int getSerial() const;
michael@0: 
michael@0:   private:
michael@0:     DISALLOW_COPY_AND_ASSIGN(RenderbufferTextureCubeMap);
michael@0: 
michael@0:     BindingPointer <TextureCubeMap> mTextureCubeMap;
michael@0:     GLenum mTarget;
michael@0: };
michael@0: 
michael@0: // A class derived from RenderbufferStorage is created whenever glRenderbufferStorage
michael@0: // is called. The specific concrete type depends on whether the internal format is
michael@0: // colour depth, stencil or packed depth/stencil.
michael@0: class RenderbufferStorage : public RenderbufferInterface
michael@0: {
michael@0:   public:
michael@0:     RenderbufferStorage();
michael@0: 
michael@0:     virtual ~RenderbufferStorage() = 0;
michael@0: 
michael@0:     virtual rx::RenderTarget *getRenderTarget();
michael@0:     virtual rx::RenderTarget *getDepthStencil();
michael@0: 
michael@0:     virtual GLsizei getWidth() const;
michael@0:     virtual GLsizei getHeight() const;
michael@0:     virtual GLenum getInternalFormat() const;
michael@0:     virtual GLenum getActualFormat() const;
michael@0:     virtual GLsizei getSamples() const;
michael@0: 
michael@0:     virtual unsigned int getSerial() const;
michael@0: 
michael@0:     static unsigned int issueSerial();
michael@0:     static unsigned int issueCubeSerials();
michael@0: 
michael@0:   protected:
michael@0:     GLsizei mWidth;
michael@0:     GLsizei mHeight;
michael@0:     GLenum mInternalFormat;
michael@0:     GLenum mActualFormat;
michael@0:     GLsizei mSamples;
michael@0: 
michael@0:   private:
michael@0:     DISALLOW_COPY_AND_ASSIGN(RenderbufferStorage);
michael@0: 
michael@0:     const unsigned int mSerial;
michael@0: 
michael@0:     static unsigned int mCurrentSerial;
michael@0: };
michael@0: 
michael@0: // Renderbuffer implements the GL renderbuffer object.
michael@0: // It's only a proxy for a RenderbufferInterface instance; the internal object
michael@0: // can change whenever glRenderbufferStorage is called.
michael@0: class Renderbuffer : public RefCountObject
michael@0: {
michael@0:   public:
michael@0:     Renderbuffer(rx::Renderer *renderer, GLuint id, RenderbufferInterface *storage);
michael@0: 
michael@0:     virtual ~Renderbuffer();
michael@0: 
michael@0:     // These functions from RefCountObject are overloaded here because
michael@0:     // Textures need to maintain their own count of references to them via
michael@0:     // Renderbuffers/RenderbufferTextures. These functions invoke those
michael@0:     // reference counting functions on the RenderbufferInterface.
michael@0:     void addRef() const;
michael@0:     void release() const;
michael@0: 
michael@0:     rx::RenderTarget *getRenderTarget();
michael@0:     rx::RenderTarget *getDepthStencil();
michael@0: 
michael@0:     GLsizei getWidth() const;
michael@0:     GLsizei getHeight() const;
michael@0:     GLenum getInternalFormat() const;
michael@0:     GLenum getActualFormat() const;
michael@0:     GLuint getRedSize() const;
michael@0:     GLuint getGreenSize() const;
michael@0:     GLuint getBlueSize() const;
michael@0:     GLuint getAlphaSize() const;
michael@0:     GLuint getDepthSize() const;
michael@0:     GLuint getStencilSize() const;
michael@0:     GLsizei getSamples() const;
michael@0: 
michael@0:     unsigned int getSerial() const;
michael@0: 
michael@0:     void setStorage(RenderbufferStorage *newStorage);
michael@0: 
michael@0:   private:
michael@0:     DISALLOW_COPY_AND_ASSIGN(Renderbuffer);
michael@0: 
michael@0:     RenderbufferInterface *mInstance;
michael@0: };
michael@0: 
michael@0: class Colorbuffer : public RenderbufferStorage
michael@0: {
michael@0:   public:
michael@0:     Colorbuffer(rx::Renderer *renderer, rx::SwapChain *swapChain);
michael@0:     Colorbuffer(rx::Renderer *renderer, GLsizei width, GLsizei height, GLenum format, GLsizei samples);
michael@0: 
michael@0:     virtual ~Colorbuffer();
michael@0: 
michael@0:     virtual rx::RenderTarget *getRenderTarget();
michael@0: 
michael@0:   private:
michael@0:     DISALLOW_COPY_AND_ASSIGN(Colorbuffer);
michael@0: 
michael@0:     rx::RenderTarget *mRenderTarget;
michael@0: };
michael@0: 
michael@0: class DepthStencilbuffer : public RenderbufferStorage
michael@0: {
michael@0:   public:
michael@0:     DepthStencilbuffer(rx::Renderer *renderer, rx::SwapChain *swapChain);
michael@0:     DepthStencilbuffer(rx::Renderer *renderer, GLsizei width, GLsizei height, GLsizei samples);
michael@0: 
michael@0:     ~DepthStencilbuffer();
michael@0: 
michael@0:     virtual rx::RenderTarget *getDepthStencil();
michael@0: 
michael@0:   protected:
michael@0:     rx::RenderTarget  *mDepthStencil;
michael@0: 
michael@0:   private:
michael@0:     DISALLOW_COPY_AND_ASSIGN(DepthStencilbuffer);
michael@0: };
michael@0: 
michael@0: class Depthbuffer : public DepthStencilbuffer
michael@0: {
michael@0:   public:
michael@0:     Depthbuffer(rx::Renderer *renderer, GLsizei width, GLsizei height, GLsizei samples);
michael@0: 
michael@0:     virtual ~Depthbuffer();
michael@0: 
michael@0:   private:
michael@0:     DISALLOW_COPY_AND_ASSIGN(Depthbuffer);
michael@0: };
michael@0: 
michael@0: class Stencilbuffer : public DepthStencilbuffer
michael@0: {
michael@0:   public:
michael@0:     Stencilbuffer(rx::Renderer *renderer, GLsizei width, GLsizei height, GLsizei samples);
michael@0: 
michael@0:     virtual ~Stencilbuffer();
michael@0: 
michael@0:   private:
michael@0:     DISALLOW_COPY_AND_ASSIGN(Stencilbuffer);
michael@0: };
michael@0: }
michael@0: 
michael@0: #endif   // LIBGLESV2_RENDERBUFFER_H_