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

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• Hash : 0df8fe44
  Author :
  Date : 2015-11-24T16:10:24
  

  D3D11: Don't read or write to the unused depth buffer.
  
  When using STENCIL8, we emulate it on D3D11 with D24S8, since there
  is no native stencil-only format. However in many places we would
  write to the depth part of this format, and confuse the D3D runtime
  when it would use the depth test. Fix this by never modifying the
  depth portion of the buffer, or reading from it.
  
  BUG=angleproject:1232
  
  Change-Id: Ifd2e54eceae84e8deea85f439c132d07981b2286
  Reviewed-on: https://chromium-review.googlesource.com/313996
  Tryjob-Request: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Corentin Wallez <cwallez@chromium.org>
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  Tested-by: Jamie Madill <jmadill@chromium.org>
  

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• 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 <vector>
  
  #include "common/angleutils.h"
  #include "libANGLE/Constants.h"
  #include "libANGLE/Error.h"
  #include "libANGLE/FramebufferAttachment.h"
  #include "libANGLE/RefCountObject.h"
  
  namespace rx
  {
  class ImplFactory;
  class FramebufferImpl;
  class RenderbufferImpl;
  class SurfaceImpl;
  }
  
  namespace egl
  {
  class Surface;
  }
  
  namespace gl
  {
  class Context;
  class Renderbuffer;
  class State;
  class Texture;
  class TextureCapsMap;
  struct Caps;
  struct Data;
  struct Extensions;
  struct ImageIndex;
  struct Rectangle;
  
  class Framebuffer
  {
    public:
  
      class Data final : angle::NonCopyable
      {
        public:
          explicit Data();
          explicit Data(const Caps &caps);
          ~Data();
  
          const FramebufferAttachment *getReadAttachment() const;
          const FramebufferAttachment *getFirstColorAttachment() const;
          const FramebufferAttachment *getDepthOrStencilAttachment() const;
          const FramebufferAttachment *getColorAttachment(size_t colorAttachment) const;
          const FramebufferAttachment *getDepthAttachment() const;
          const FramebufferAttachment *getStencilAttachment() const;
          const FramebufferAttachment *getDepthStencilAttachment() const;
  
          const std::vector<GLenum> &getDrawBufferStates() const { return mDrawBufferStates; }
          const std::vector<FramebufferAttachment> &getColorAttachments() const { return mColorAttachments; }
  
          bool attachmentsHaveSameDimensions() const;
  
        private:
          friend class Framebuffer;
  
          std::vector<FramebufferAttachment> mColorAttachments;
          FramebufferAttachment mDepthAttachment;
          FramebufferAttachment mStencilAttachment;
  
          std::vector<GLenum> mDrawBufferStates;
          GLenum mReadBufferState;
      };
  
      Framebuffer(const Caps &caps, rx::ImplFactory *factory, GLuint id);
      Framebuffer(rx::SurfaceImpl *surface);
      virtual ~Framebuffer();
  
      const rx::FramebufferImpl *getImplementation() const { return mImpl; }
      rx::FramebufferImpl *getImplementation() { return mImpl; }
  
      GLuint id() const { return mId; }
  
      void setAttachment(GLenum type,
                         GLenum binding,
                         const ImageIndex &textureIndex,
                         FramebufferAttachmentObject *resource);
      void resetAttachment(GLenum binding);
  
      void detachTexture(GLuint texture);
      void detachRenderbuffer(GLuint renderbuffer);
  
      const FramebufferAttachment *getColorbuffer(size_t colorAttachment) const;
      const FramebufferAttachment *getDepthbuffer() const;
      const FramebufferAttachment *getStencilbuffer() const;
      const FramebufferAttachment *getDepthStencilBuffer() const;
      const FramebufferAttachment *getDepthOrStencilbuffer() const;
      const FramebufferAttachment *getReadColorbuffer() const;
      GLenum getReadColorbufferType() const;
      const FramebufferAttachment *getFirstColorbuffer() const;
  
      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(size_t colorAttachment) const;
      bool hasEnabledColorAttachment() const;
      size_t getNumColorBuffers() const;
      bool hasDepth() 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 discard(size_t count, const GLenum *attachments);
      Error invalidate(size_t count, const GLenum *attachments);
      Error invalidateSub(size_t count, const GLenum *attachments, const gl::Rectangle &area);
  
      Error clear(Context *context, GLbitfield mask);
      Error clearBufferfv(Context *context, GLenum buffer, GLint drawbuffer, const GLfloat *values);
      Error clearBufferuiv(Context *context, GLenum buffer, GLint drawbuffer, const GLuint *values);
      Error clearBufferiv(Context *context, GLenum buffer, GLint drawbuffer, const GLint *values);
      Error clearBufferfi(Context *context,
                          GLenum buffer,
                          GLint drawbuffer,
                          GLfloat depth,
                          GLint stencil);
  
      GLenum getImplementationColorReadFormat() const;
      GLenum getImplementationColorReadType() const;
      Error readPixels(Context *context,
                       const gl::Rectangle &area,
                       GLenum format,
                       GLenum type,
                       GLvoid *pixels) const;
  
      Error blit(Context *context,
                 const gl::Rectangle &sourceArea,
                 const gl::Rectangle &destArea,
                 GLbitfield mask,
                 GLenum filter,
                 const gl::Framebuffer *sourceFramebuffer);
  
    protected:
      void detachResourceById(GLenum resourceType, GLuint resourceId);
  
      Data mData;
      rx::FramebufferImpl *mImpl;
      GLuint mId;
  };
  
  }
  
  #endif   // LIBANGLE_FRAMEBUFFER_H_
  

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