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

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• Hash : 9bc9a321
  Author :
  Date : 2017-07-21T14:28:17
  

  Integrate multiview state in FBO completeness check
  
  The patch extends the FBO completeness validation to include the
  multiview state members according to the ANGLE_multiview specification.
  
  It also changes the numViews in FramebufferAttachment to be consistently
  of type GLsizei instead of GLint.
  
  BUG=angleproject:2062
  TEST=angle_end2end_tests
  
  Change-Id: Ibe550ba03204d808d96a4edf4807c68421aa1158
  Reviewed-on: https://chromium-review.googlesource.com/581193
  Commit-Queue: Corentin Wallez <cwallez@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 //////
  
  const GLsizei FramebufferAttachment::kDefaultNumViews         = 1;
  const GLenum FramebufferAttachment::kDefaultMultiviewLayout   = GL_NONE;
  const GLint FramebufferAttachment::kDefaultBaseViewIndex      = 0;
  const GLint FramebufferAttachment::kDefaultViewportOffsets[2] = {0};
  
  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),
        mNumViews(kDefaultNumViews),
        mMultiviewLayout(kDefaultMultiviewLayout),
        mBaseViewIndex(kDefaultBaseViewIndex),
        mViewportOffsets(1u)
  {
  }
  
  FramebufferAttachment::FramebufferAttachment(const Context *context,
                                               GLenum type,
                                               GLenum binding,
                                               const ImageIndex &textureIndex,
                                               FramebufferAttachmentObject *resource)
      : mResource(nullptr)
  {
      attach(context, type, binding, textureIndex, resource, kDefaultNumViews, kDefaultBaseViewIndex,
             kDefaultMultiviewLayout, kDefaultViewportOffsets);
  }
  
  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);
      std::swap(mNumViews, other.mNumViews);
      std::swap(mMultiviewLayout, other.mMultiviewLayout);
      std::swap(mBaseViewIndex, other.mBaseViewIndex);
      std::swap(mViewportOffsets, other.mViewportOffsets);
      return *this;
  }
  
  FramebufferAttachment::~FramebufferAttachment()
  {
      ASSERT(!isAttached());
  }
  
  void FramebufferAttachment::detach(const Context *context)
  {
      mType = GL_NONE;
      if (mResource != nullptr)
      {
          mResource->onDetach(context);
          mResource = nullptr;
      }
      mNumViews        = kDefaultNumViews;
      mMultiviewLayout = kDefaultMultiviewLayout;
      mBaseViewIndex   = kDefaultBaseViewIndex;
      mViewportOffsets.resize(1u);
      mViewportOffsets[0] = Offset();
  
      // not technically necessary, could omit for performance
      mTarget = Target();
  }
  
  void FramebufferAttachment::attach(const Context *context,
                                     GLenum type,
                                     GLenum binding,
                                     const ImageIndex &textureIndex,
                                     FramebufferAttachmentObject *resource,
                                     GLsizei numViews,
                                     GLuint baseViewIndex,
                                     GLenum multiviewLayout,
                                     const GLint *viewportOffsets)
  {
      if (resource == nullptr)
      {
          detach(context);
          return;
      }
  
      mType = type;
      mTarget = Target(binding, textureIndex);
      mNumViews        = numViews;
      mBaseViewIndex   = baseViewIndex;
      mMultiviewLayout = multiviewLayout;
      mViewportOffsets.resize(numViews);
      for (size_t i = 0u; i < mViewportOffsets.size(); ++i)
      {
          mViewportOffsets[i] = Offset(viewportOffsets[i * 2u], viewportOffsets[i * 2u + 1u], 0);
      }
      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;
  }
  
  GLsizei FramebufferAttachment::getNumViews() const
  {
      return mNumViews;
  }
  
  GLenum FramebufferAttachment::getMultiviewLayout() const
  {
      return mMultiviewLayout;
  }
  
  GLint FramebufferAttachment::getBaseViewIndex() const
  {
      return mBaseViewIndex;
  }
  
  const std::vector<Offset> &FramebufferAttachment::getMultiviewViewportOffsets() const
  {
      return mViewportOffsets;
  }
  
  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 || mNumViews != other.mNumViews ||
          mMultiviewLayout != other.mMultiviewLayout || mBaseViewIndex != other.mBaseViewIndex ||
          mViewportOffsets != other.mViewportOffsets)
      {
          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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