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

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• Hash : ab75a056
  Author :
  Date : 2014-10-15T12:56:37
  

  Refactor Framebuffer attachment application.
  
  Instead of passing texture and renderbufer IDs which requires a call to
  gl::getNonLostContext to resolve the objects, pass the Texture and Renderbuffer
  objects directly.
  
  BUG=angleproject:733
  
  Change-Id: Ia500a781643e43a17c8e9cea9f95847a7ff7b25d
  Reviewed-on: https://chromium-review.googlesource.com/228280
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  Tested-by: Geoff Lang <geofflang@chromium.org>
  

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• 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 "libGLESv2/Error.h"
  
  #include "common/angleutils.h"
  #include "common/RefCountObject.h"
  #include "Constants.h"
  
  #include <vector>
  
  namespace rx
  {
  class RenderbufferImpl;
  struct Workarounds;
  }
  
  namespace gl
  {
  class FramebufferAttachment;
  class Texture;
  class Renderbuffer;
  struct ImageIndex;
  struct Caps;
  struct Extensions;
  class TextureCapsMap;
  struct Data;
  
  typedef std::vector<FramebufferAttachment *> ColorbufferInfo;
  
  class Framebuffer
  {
    public:
      Framebuffer(GLuint id);
      virtual ~Framebuffer();
  
      GLuint id() const { return mId; }
  
      void setTextureAttachment(GLenum attachment, Texture *texture, const ImageIndex &imageIndex);
      void setRenderbufferAttachment(GLenum attachment, Renderbuffer *renderbuffer);
      void setNULLAttachment(GLenum attachment);
  
      void detachTexture(GLuint texture);
      void detachRenderbuffer(GLuint renderbuffer);
  
      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;
  
      virtual FramebufferAttachment *getAttachment(GLenum attachment) 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 gl::Data &data) const;
      bool usingExtendedDrawBuffers() const;
  
      virtual GLenum completeness(const gl::Data &data) const;
      bool hasValidDepthStencil() const;
  
      Error invalidate(const Caps &caps, GLsizei numAttachments, const GLenum *attachments);
      Error invalidateSub(GLsizei numAttachments, const GLenum *attachments, GLint x, GLint y, GLsizei width, GLsizei height);
  
      // Use this method to retrieve the color buffer map when doing rendering.
      // It will apply a workaround for poor shader performance on some systems
      // by compacting the list to skip NULL values.
      ColorbufferInfo getColorbuffersForRender(const rx::Workarounds &workarounds) const;
  
    protected:
      GLuint mId;
  
      FramebufferAttachment *mColorbuffers[IMPLEMENTATION_MAX_DRAW_BUFFERS];
      GLenum mDrawBufferStates[IMPLEMENTATION_MAX_DRAW_BUFFERS];
      GLenum mReadBufferState;
  
      FramebufferAttachment *mDepthbuffer;
      FramebufferAttachment *mStencilbuffer;
  
    private:
      DISALLOW_COPY_AND_ASSIGN(Framebuffer);
  
      void setAttachment(GLenum attachment, FramebufferAttachment *attachmentObj);
  };
  
  class DefaultFramebuffer : public Framebuffer
  {
    public:
      DefaultFramebuffer(rx::RenderbufferImpl *colorbuffer, rx::RenderbufferImpl *depthStencil);
  
      GLenum completeness(const gl::Data &data) const override;
      virtual FramebufferAttachment *getAttachment(GLenum attachment) const;
  
    private:
      DISALLOW_COPY_AND_ASSIGN(DefaultFramebuffer);
  };
  
  }
  
  namespace rx
  {
  class RenderTarget;
  
  // TODO: place this in FramebufferD3D.h
  gl::Error GetAttachmentRenderTarget(gl::FramebufferAttachment *attachment, RenderTarget **outRT);
  unsigned int GetAttachmentSerial(gl::FramebufferAttachment *attachment);
  
  }
  
  #endif   // LIBGLESV2_FRAMEBUFFER_H_
  

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