| // |
| // 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_ |
| |
| #include <GLES3/gl3.h> |
| #include <GLES2/gl2.h> |
| |
| #include "common/angleutils.h" |
| #include "common/RefCountObject.h" |
| #include "libGLESv2/FramebufferAttachment.h" |
| |
| namespace rx |
| { |
| class Renderer; |
| class SwapChain; |
| class RenderTarget; |
| class TextureStorage; |
| } |
| |
| namespace gl |
| { |
| class RenderbufferStorage; |
| |
| // A GL renderbuffer object is usually used as a depth or stencil buffer attachment |
| // for a framebuffer object. The renderbuffer itself is a distinct GL object, see |
| // FramebufferAttachment and Framebuffer for how they are applied to an FBO via an |
| // attachment point. |
| |
| class Renderbuffer : public RefCountObject |
| { |
| public: |
| Renderbuffer(rx::Renderer *renderer, GLuint id, RenderbufferStorage *newStorage); |
| |
| void setStorage(RenderbufferStorage *newStorage); |
| RenderbufferStorage *getStorage(); |
| |
| GLsizei getWidth() const; |
| GLsizei getHeight() const; |
| GLenum getInternalFormat() const; |
| GLenum getActualFormat() const; |
| GLsizei getSamples() const; |
| GLuint getRedSize() const; |
| GLuint getGreenSize() const; |
| GLuint getBlueSize() const; |
| GLuint getAlphaSize() const; |
| GLuint getDepthSize() const; |
| GLuint getStencilSize() const; |
| |
| private: |
| rx::Renderer *mRenderer; |
| RenderbufferStorage *mStorage; |
| }; |
| |
| // 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 rx::RenderTarget *getRenderTarget(); |
| virtual rx::RenderTarget *getDepthStencil(); |
| virtual rx::TextureStorage *getTextureStorage(); |
| |
| virtual GLsizei getWidth() const; |
| virtual GLsizei getHeight() const; |
| virtual GLenum getInternalFormat() const; |
| virtual GLenum getActualFormat() const; |
| virtual GLsizei getSamples() const; |
| |
| virtual unsigned int getSerial() const; |
| |
| virtual bool isTexture() const; |
| virtual unsigned int getTextureSerial() const; |
| |
| static unsigned int issueSerials(GLuint count); |
| |
| protected: |
| GLsizei mWidth; |
| GLsizei mHeight; |
| GLenum mInternalFormat; |
| GLenum mActualFormat; |
| GLsizei mSamples; |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(RenderbufferStorage); |
| |
| const unsigned int mSerial; |
| |
| static unsigned int mCurrentSerial; |
| }; |
| |
| class Colorbuffer : public RenderbufferStorage |
| { |
| public: |
| Colorbuffer(rx::Renderer *renderer, rx::SwapChain *swapChain); |
| Colorbuffer(rx::Renderer *renderer, GLsizei width, GLsizei height, GLenum format, GLsizei samples); |
| |
| virtual ~Colorbuffer(); |
| |
| virtual rx::RenderTarget *getRenderTarget(); |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(Colorbuffer); |
| |
| rx::RenderTarget *mRenderTarget; |
| }; |
| |
| class DepthStencilbuffer : public RenderbufferStorage |
| { |
| public: |
| DepthStencilbuffer(rx::Renderer *renderer, rx::SwapChain *swapChain); |
| DepthStencilbuffer(rx::Renderer *renderer, GLsizei width, GLsizei height, GLsizei samples); |
| |
| ~DepthStencilbuffer(); |
| |
| virtual rx::RenderTarget *getDepthStencil(); |
| |
| protected: |
| rx::RenderTarget *mDepthStencil; |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(DepthStencilbuffer); |
| }; |
| |
| class Depthbuffer : public DepthStencilbuffer |
| { |
| public: |
| Depthbuffer(rx::Renderer *renderer, GLsizei width, GLsizei height, GLsizei samples); |
| |
| virtual ~Depthbuffer(); |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(Depthbuffer); |
| }; |
| |
| class Stencilbuffer : public DepthStencilbuffer |
| { |
| public: |
| Stencilbuffer(rx::Renderer *renderer, GLsizei width, GLsizei height, GLsizei samples); |
| |
| virtual ~Stencilbuffer(); |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(Stencilbuffer); |
| }; |
| |
| } |
| |
| #endif // LIBGLESV2_RENDERBUFFER_H_ |