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

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• Author : Jamie Madill
  Date : 2014-06-16 10:33:59
  Hash : 6c7b4ada
  Message : Add new ref-counted Renderbuffer class. Renderbuffers are a clear object type in GL, and this patch adds a more consistent state representation for them. They're managed by the ResourceManager, and have a storage implementation similar to Textures, but much simpler. BUG=angle:660 Change-Id: Ia17199bb8cb570d48db42e1f28ccbcc12a902fcf Reviewed-on: https://chromium-review.googlesource.com/201834 Tested-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Shannon Woods <shannonwoods@chromium.org>

• src/libGLESv2/Framebuffer.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.
  //
  
  // Framebuffer.h: Defines the gl::Framebuffer class. Implements GL framebuffer
  // objects and related functionality. [OpenGL ES 2.0.24] section 4.4 page 105.
  
  #ifndef LIBGLESV2_FRAMEBUFFER_H_
  #define LIBGLESV2_FRAMEBUFFER_H_
  
  #include "common/angleutils.h"
  #include "common/RefCountObject.h"
  #include "constants.h"
  
  namespace rx
  {
  class Renderer;
  }
  
  namespace gl
  {
  class FramebufferAttachment;
  class FramebufferAttachmentImpl;
  class Colorbuffer;
  class Depthbuffer;
  class Stencilbuffer;
  class DepthStencilbuffer;
  
  class Framebuffer
  {
    public:
      explicit Framebuffer(rx::Renderer *renderer);
  
      virtual ~Framebuffer();
  
      void setColorbuffer(unsigned int colorAttachment, GLenum type, GLuint colorbuffer, GLint level, GLint layer);
      void setDepthbuffer(GLenum type, GLuint depthbuffer, GLint level, GLint layer);
      void setStencilbuffer(GLenum type, GLuint stencilbuffer, GLint level, GLint layer);
      void setDepthStencilBuffer(GLenum type, GLuint depthStencilBuffer, GLint level, GLint layer);
  
      void detachTexture(GLuint texture);
      void detachRenderbuffer(GLuint renderbuffer);
  
      unsigned int getRenderTargetSerial(unsigned int colorAttachment) const;
      unsigned int getDepthbufferSerial() const;
      unsigned int getStencilbufferSerial() const;
  
      FramebufferAttachment *getColorbuffer(unsigned int colorAttachment) const;
      FramebufferAttachment *getDepthbuffer() const;
      FramebufferAttachment *getStencilbuffer() const;
      FramebufferAttachment *getDepthStencilBuffer() const;
      FramebufferAttachment *getDepthOrStencilbuffer() const;
      FramebufferAttachment *getReadColorbuffer() const;
      GLenum getReadColorbufferType() const;
      FramebufferAttachment *getFirstColorbuffer() const;
  
      GLenum getColorbufferType(unsigned int colorAttachment) const;
      GLenum getDepthbufferType() const;
      GLenum getStencilbufferType() const;
      GLenum getDepthStencilbufferType() const;
  
      GLuint getColorbufferHandle(unsigned int colorAttachment) const;
      GLuint getDepthbufferHandle() const;
      GLuint getStencilbufferHandle() const;
      GLenum getDepthStencilbufferHandle() const;
  
      GLenum getColorbufferMipLevel(unsigned int colorAttachment) const;
      GLenum getDepthbufferMipLevel() const;
      GLenum getStencilbufferMipLevel() const;
      GLenum getDepthStencilbufferMipLevel() const;
  
      GLenum getColorbufferLayer(unsigned int colorAttachment) const;
      GLenum getDepthbufferLayer() const;
      GLenum getStencilbufferLayer() const;
      GLenum getDepthStencilbufferLayer() const;
  
      GLenum getDrawBufferState(unsigned int colorAttachment) const;
      void setDrawBufferState(unsigned int colorAttachment, GLenum drawBuffer);
  
      bool isEnabledColorAttachment(unsigned int colorAttachment) const;
      bool hasEnabledColorAttachment() const;
      bool hasStencil() const;
      int getSamples() const;
      bool usingExtendedDrawBuffers() const;
  
      virtual GLenum completeness() const;
  
    protected:
      FramebufferTextureBindingPointer<FramebufferAttachment> mColorbuffers[IMPLEMENTATION_MAX_DRAW_BUFFERS];
      GLenum mDrawBufferStates[IMPLEMENTATION_MAX_DRAW_BUFFERS];
      GLenum mReadBufferState;
  
      FramebufferTextureBindingPointer<FramebufferAttachment> mDepthbuffer;
      FramebufferTextureBindingPointer<FramebufferAttachment> mStencilbuffer;
  
      rx::Renderer *mRenderer;
  
    private:
      DISALLOW_COPY_AND_ASSIGN(Framebuffer);
  
      FramebufferAttachmentImpl *createAttachmentImpl(GLenum type, GLuint handle, GLint level, GLint layer) const;
  };
  
  class DefaultFramebuffer : public Framebuffer
  {
    public:
      DefaultFramebuffer(rx::Renderer *Renderer, Colorbuffer *colorbuffer, DepthStencilbuffer *depthStencil);
  
      virtual GLenum completeness() const;
  
    private:
      DISALLOW_COPY_AND_ASSIGN(DefaultFramebuffer);
  };
  
  }
  
  #endif   // LIBGLESV2_FRAMEBUFFER_H_