kc3-lang/angle/src/libANGLE/FramebufferAttachment.cpp

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• Hash : 4928b7ca
  Author :
  Date : 2017-06-20T12:57:39
  

  Proliferate gl::Context everywhere.
  
  This gives the D3D back-end access to the GL state almost anywhere.
  This uses the onDestroy hook for Textures to push errors up from
  destructors, although they still don't quite make it to the Context.
  
  There are places, such as in EGL object (Context/Surface) destruction,
  where we end up calling through to GL implementation internals without
  having access to a gl::Context. We handle this via a proxy Context
  to a Display, basically a null context, that has access to impl-side
  state like the Renderer pointer if necessary. It does not have access
  to the normal GL state.
  
  Also Pass gl::Context to RefCountObject::release(). Since we're using
  destroy() methods now, we should not ever call the destructor directly.
  
  BUG=angleproject:1156
  
  Change-Id: Ie4c32ad6bf6caaff0289901f30b5c6bafa2ce259
  Reviewed-on: https://chromium-review.googlesource.com/529707
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  

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• src/libANGLE/FramebufferAttachment.cpp

• //
  // Copyright (c) 2014 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.
  //
  
  // FramebufferAttachment.cpp: the gl::FramebufferAttachment class and its derived classes
  // objects and related functionality. [OpenGL ES 2.0.24] section 4.4.3 page 108.
  
  #include "libANGLE/FramebufferAttachment.h"
  
  #include "common/utilities.h"
  #include "libANGLE/Config.h"
  #include "libANGLE/Renderbuffer.h"
  #include "libANGLE/Surface.h"
  #include "libANGLE/Texture.h"
  #include "libANGLE/formatutils.h"
  #include "libANGLE/renderer/FramebufferImpl.h"
  #include "libANGLE/renderer/FramebufferAttachmentObjectImpl.h"
  
  namespace gl
  {
  
  ////// FramebufferAttachment::Target Implementation //////
  
  FramebufferAttachment::Target::Target()
      : mBinding(GL_NONE),
        mTextureIndex(ImageIndex::MakeInvalid())
  {
  }
  
  FramebufferAttachment::Target::Target(GLenum binding, const ImageIndex &imageIndex)
      : mBinding(binding),
        mTextureIndex(imageIndex)
  {
  }
  
  FramebufferAttachment::Target::Target(const Target &other)
      : mBinding(other.mBinding),
        mTextureIndex(other.mTextureIndex)
  {
  }
  
  FramebufferAttachment::Target &FramebufferAttachment::Target::operator=(const Target &other)
  {
      this->mBinding = other.mBinding;
      this->mTextureIndex = other.mTextureIndex;
      return *this;
  }
  
  ////// FramebufferAttachment Implementation //////
  
  FramebufferAttachment::FramebufferAttachment()
      : mType(GL_NONE), mResource(nullptr)
  {
  }
  
  FramebufferAttachment::FramebufferAttachment(const Context *context,
                                               GLenum type,
                                               GLenum binding,
                                               const ImageIndex &textureIndex,
                                               FramebufferAttachmentObject *resource)
      : mResource(nullptr)
  {
      attach(context, type, binding, textureIndex, resource);
  }
  
  FramebufferAttachment::FramebufferAttachment(FramebufferAttachment &&other)
      : FramebufferAttachment()
  {
      *this = std::move(other);
  }
  
  FramebufferAttachment &FramebufferAttachment::operator=(FramebufferAttachment &&other)
  {
      std::swap(mType, other.mType);
      std::swap(mTarget, other.mTarget);
      std::swap(mResource, other.mResource);
      return *this;
  }
  
  FramebufferAttachment::~FramebufferAttachment()
  {
      ASSERT(!isAttached());
  }
  
  void FramebufferAttachment::detach(const Context *context)
  {
      mType = GL_NONE;
      if (mResource != nullptr)
      {
          mResource->onDetach(context);
          mResource = nullptr;
      }
  
      // not technically necessary, could omit for performance
      mTarget = Target();
  }
  
  void FramebufferAttachment::attach(const Context *context,
                                     GLenum type,
                                     GLenum binding,
                                     const ImageIndex &textureIndex,
                                     FramebufferAttachmentObject *resource)
  {
      if (resource == nullptr)
      {
          detach(context);
          return;
      }
  
      mType = type;
      mTarget = Target(binding, textureIndex);
      resource->onAttach(context);
  
      if (mResource != nullptr)
      {
          mResource->onDetach(context);
      }
  
      mResource = resource;
  }
  
  GLuint FramebufferAttachment::getRedSize() const
  {
      return getFormat().info->redBits;
  }
  
  GLuint FramebufferAttachment::getGreenSize() const
  {
      return getFormat().info->greenBits;
  }
  
  GLuint FramebufferAttachment::getBlueSize() const
  {
      return getFormat().info->blueBits;
  }
  
  GLuint FramebufferAttachment::getAlphaSize() const
  {
      return getFormat().info->alphaBits;
  }
  
  GLuint FramebufferAttachment::getDepthSize() const
  {
      return getFormat().info->depthBits;
  }
  
  GLuint FramebufferAttachment::getStencilSize() const
  {
      return getFormat().info->stencilBits;
  }
  
  GLenum FramebufferAttachment::getComponentType() const
  {
      return getFormat().info->componentType;
  }
  
  GLenum FramebufferAttachment::getColorEncoding() const
  {
      return getFormat().info->colorEncoding;
  }
  
  GLuint FramebufferAttachment::id() const
  {
      return mResource->getId();
  }
  
  const ImageIndex &FramebufferAttachment::getTextureImageIndex() const
  {
      ASSERT(type() == GL_TEXTURE);
      return mTarget.textureIndex();
  }
  
  GLenum FramebufferAttachment::cubeMapFace() const
  {
      ASSERT(mType == GL_TEXTURE);
  
      const auto &index = mTarget.textureIndex();
      return IsCubeMapTextureTarget(index.type) ? index.type : GL_NONE;
  }
  
  GLint FramebufferAttachment::mipLevel() const
  {
      ASSERT(type() == GL_TEXTURE);
      return mTarget.textureIndex().mipIndex;
  }
  
  GLint FramebufferAttachment::layer() const
  {
      ASSERT(mType == GL_TEXTURE);
  
      const auto &index = mTarget.textureIndex();
  
      if (index.type == GL_TEXTURE_2D_ARRAY || index.type == GL_TEXTURE_3D)
      {
          return index.layerIndex;
      }
      return 0;
  }
  
  Texture *FramebufferAttachment::getTexture() const
  {
      return rx::GetAs<Texture>(mResource);
  }
  
  Renderbuffer *FramebufferAttachment::getRenderbuffer() const
  {
      return rx::GetAs<Renderbuffer>(mResource);
  }
  
  const egl::Surface *FramebufferAttachment::getSurface() const
  {
      return rx::GetAs<egl::Surface>(mResource);
  }
  
  FramebufferAttachmentObject *FramebufferAttachment::getResource() const
  {
      return mResource;
  }
  
  bool FramebufferAttachment::operator==(const FramebufferAttachment &other) const
  {
      if (mResource != other.mResource || mType != other.mType)
      {
          return false;
      }
  
      if (mType == GL_TEXTURE && getTextureImageIndex() != other.getTextureImageIndex())
      {
          return false;
      }
  
      return true;
  }
  
  bool FramebufferAttachment::operator!=(const FramebufferAttachment &other) const
  {
      return !(*this == other);
  }
  
  Error FramebufferAttachmentObject::getAttachmentRenderTarget(
      const Context *context,
      GLenum binding,
      const ImageIndex &imageIndex,
      rx::FramebufferAttachmentRenderTarget **rtOut) const
  {
      return getAttachmentImpl()->getAttachmentRenderTarget(context, binding, imageIndex, rtOut);
  }
  
  angle::BroadcastChannel<> *FramebufferAttachmentObject::getDirtyChannel()
  {
      return &mDirtyChannel;
  }
  
  }  // namespace gl
  

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