kc3-lang/angle/src/libANGLE/renderer/d3d/TextureStorage.h

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• Hash : cc129377
  Author :
  Date : 2018-04-12T09:13:18
  

  ImageIndex: Consolidate layer/cube face.
  
  In terms of the Texture or Image resource, a cube face
  refers to a layer of a 2D texture. This layer has a special
  meaning for cube textures, but it is represented as a layer
  with a layer index. Cube array textures are no different,
  they just use a different indexing scheme for the array
  layers.
  
  This also cleans up the ImageIndex helper to have a class
  structure with private data, and cleans up a few cases to
  use generic Make functions and iterators where they were
  setting properties of the index directly.
  
  This will make it easier to have ImageIndexes address
  entire levels of a Cube map in the future, and makes the
  layer count logic in Vulkan cleaner.
  
  Bug: angleproject:2318
  Change-Id: Iea9842e233f974a9896282ca224cb001f7882bd1
  Reviewed-on: https://chromium-review.googlesource.com/987525
  Reviewed-by: Luc Ferron <lucferron@chromium.org>
  Reviewed-by: Yuly Novikov <ynovikov@chromium.org>
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  

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• src/libANGLE/renderer/d3d/TextureStorage.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.
  //
  
  // TextureStorage.h: Defines the abstract rx::TextureStorage class.
  
  #ifndef LIBANGLE_RENDERER_D3D_TEXTURESTORAGE_H_
  #define LIBANGLE_RENDERER_D3D_TEXTURESTORAGE_H_
  
  #include "common/debug.h"
  #include "libANGLE/angletypes.h"
  
  #include <GLES2/gl2.h>
  #include <stdint.h>
  
  namespace gl
  {
  class Context;
  class ImageIndex;
  struct Box;
  struct PixelUnpackState;
  }  // namespace gl
  
  namespace angle
  {
  class Subject;
  }  // namespace angle
  
  namespace rx
  {
  class SwapChainD3D;
  class RenderTargetD3D;
  class ImageD3D;
  
  class TextureStorage : angle::NonCopyable
  {
    public:
      TextureStorage() : mSubject(nullptr) {}
      virtual ~TextureStorage() {}
  
      virtual gl::Error onDestroy(const gl::Context *context);
  
      virtual int getTopLevel() const = 0;
      virtual bool isRenderTarget() const = 0;
      virtual bool isManaged() const = 0;
      virtual bool supportsNativeMipmapFunction() const = 0;
      virtual int getLevelCount() const = 0;
  
      virtual gl::Error getRenderTarget(const gl::Context *context,
                                        const gl::ImageIndex &index,
                                        RenderTargetD3D **outRT) = 0;
      virtual gl::Error generateMipmap(const gl::Context *context,
                                       const gl::ImageIndex &sourceIndex,
                                       const gl::ImageIndex &destIndex) = 0;
  
      virtual gl::Error copyToStorage(const gl::Context *context, TextureStorage *destStorage) = 0;
      virtual gl::Error setData(const gl::Context *context,
                                const gl::ImageIndex &index,
                                ImageD3D *image,
                                const gl::Box *destBox,
                                GLenum type,
                                const gl::PixelUnpackState &unpack,
                                const uint8_t *pixelData) = 0;
  
      // This is a no-op for most implementations of TextureStorage. Some (e.g. TextureStorage11_2D) might override it.
      virtual gl::Error useLevelZeroWorkaroundTexture(const gl::Context *context,
                                                      bool useLevelZeroTexture);
  
      // Only used for D3D11.
      void setSubject(const angle::Subject *subject);
  
    protected:
      const angle::Subject *mSubject;
  };
  
  inline gl::Error TextureStorage::onDestroy(const gl::Context *context)
  {
      return gl::NoError();
  }
  
  inline gl::Error TextureStorage::useLevelZeroWorkaroundTexture(const gl::Context *context,
                                                                 bool useLevelZeroTexture)
  {
      return gl::NoError();
  }
  
  inline void TextureStorage::setSubject(const angle::Subject *subject)
  {
      mSubject = subject;
  }
  
  using TexStoragePointer = angle::UniqueObjectPointer<TextureStorage, gl::Context>;
  
  }  // namespace rx
  
  #endif // LIBANGLE_RENDERER_D3D_TEXTURESTORAGE_H_
  

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