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

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• Author : Geoff Lang
  Date : 2014-12-01 12:51:04
  Hash : 54bd5a46
  Message : Move blit to the Framebuffer object and Impl. BUG=angle:841 Change-Id: I482e53a90606d9d6b105c7006234215d51ab1a6b Reviewed-on: https://chromium-review.googlesource.com/232692 Reviewed-by: Kenneth Russell <kbr@chromium.org> Reviewed-by: Brandon Jones <bajones@chromium.org> Tested-by: Geoff Lang <geofflang@chromium.org>

• src/libANGLE/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 LIBANGLE_FRAMEBUFFER_H_
  #define LIBANGLE_FRAMEBUFFER_H_
  
  #include "libANGLE/Error.h"
  #include "libANGLE/RefCountObject.h"
  #include "libANGLE/Constants.h"
  
  #include "common/angleutils.h"
  
  #include <vector>
  
  namespace rx
  {
  class RenderbufferImpl;
  struct Workarounds;
  class DefaultAttachmentImpl;
  class FramebufferImpl;
  }
  
  namespace gl
  {
  class FramebufferAttachment;
  class Texture;
  class Renderbuffer;
  struct ImageIndex;
  struct Caps;
  struct Extensions;
  class TextureCapsMap;
  struct Data;
  class State;
  struct Rectangle;
  
  typedef std::vector<FramebufferAttachment *> ColorbufferInfo;
  
  class Framebuffer
  {
    public:
      Framebuffer(rx::FramebufferImpl *impl, GLuint id);
      virtual ~Framebuffer();
  
      const rx::FramebufferImpl *getImplementation() const { return mImpl; }
      rx::FramebufferImpl *getImplementation() { return mImpl; }
  
      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;
  
      FramebufferAttachment *getAttachment(GLenum attachment) const;
  
      GLenum getDrawBufferState(unsigned int colorAttachment) const;
      void setDrawBuffers(size_t count, const GLenum *buffers);
  
      GLenum getReadBufferState() const;
      void setReadBuffer(GLenum buffer);
  
      bool isEnabledColorAttachment(unsigned int colorAttachment) const;
      bool hasEnabledColorAttachment() const;
      bool hasStencil() const;
      int getSamples(const gl::Data &data) const;
      bool usingExtendedDrawBuffers() const;
  
      GLenum checkStatus(const gl::Data &data) const;
      bool hasValidDepthStencil() const;
  
      Error invalidate(size_t count, const GLenum *attachments);
      Error invalidateSub(size_t count, const GLenum *attachments, const gl::Rectangle &area);
  
      Error clear(const State &state, GLbitfield mask);
      Error clearBufferfv(const State &state, GLenum buffer, GLint drawbuffer, const GLfloat *values);
      Error clearBufferuiv(const State &state, GLenum buffer, GLint drawbuffer, const GLuint *values);
      Error clearBufferiv(const State &state, GLenum buffer, GLint drawbuffer, const GLint *values);
      Error clearBufferfi(const State &state, GLenum buffer, GLint drawbuffer, GLfloat depth, GLint stencil);
  
      GLenum getImplementationColorReadFormat() const;
      GLenum getImplementationColorReadType() const;
      Error readPixels(const gl::State &state, const gl::Rectangle &area, GLenum format, GLenum type, GLvoid *pixels) const;
  
      Error blit(const gl::State &state, const gl::Rectangle &sourceArea, const gl::Rectangle &destArea,
                 GLbitfield mask, GLenum filter, const gl::Framebuffer *sourceFramebuffer);
  
      // 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:
      void setAttachment(GLenum attachment, FramebufferAttachment *attachmentObj);
  
      rx::FramebufferImpl *mImpl;
      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);
  };
  
  class DefaultFramebuffer : public Framebuffer
  {
    public:
      DefaultFramebuffer(rx::FramebufferImpl *impl, rx::DefaultAttachmentImpl *colorAttachment,
                         rx::DefaultAttachmentImpl *depthAttachment, rx::DefaultAttachmentImpl *stencilAttachment);
  
    private:
      DISALLOW_COPY_AND_ASSIGN(DefaultFramebuffer);
  };
  
  }
  
  #endif   // LIBANGLE_FRAMEBUFFER_H_