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

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• Author : Mingyu Hu
  Date : 2019-08-26 15:59:48
  Hash : 7e44ec26
  Message : GL_EXT_multisampled_render_to_texture extension. Part 1. Adding new parameters for extension without adding any real code change. Since no new code paths were added, we expect all tests to pass as before. Bug: angleproject:980428 Change-Id: I551b46a66f422eabd357fd021e00cf266a991efb Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1772377 Commit-Queue: Rafael Cintron <rafael.cintron@microsoft.com> Reviewed-by: Rafael Cintron <rafael.cintron@microsoft.com> Reviewed-by: Geoff Lang <geofflang@chromium.org>

• src/libANGLE/renderer/d3d/TextureStorage.h

• //
  // Copyright 2002 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() {}
      virtual ~TextureStorage() {}
  
      virtual angle::Result 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 angle::Result getRenderTarget(const gl::Context *context,
                                            const gl::ImageIndex &index,
                                            GLsizei samples,
                                            RenderTargetD3D **outRT)        = 0;
      virtual angle::Result generateMipmap(const gl::Context *context,
                                           const gl::ImageIndex &sourceIndex,
                                           const gl::ImageIndex &destIndex) = 0;
  
      virtual angle::Result copyToStorage(const gl::Context *context,
                                          TextureStorage *destStorage) = 0;
      virtual angle::Result 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 angle::Result useLevelZeroWorkaroundTexture(const gl::Context *context,
                                                          bool useLevelZeroTexture);
  
      virtual void invalidateTextures() {}
  
      // RenderToTexture methods
      virtual GLsizei getRenderToTextureSamples() const;
  
    protected:
      const angle::Subject *mSubject;
  };
  
  inline angle::Result TextureStorage::onDestroy(const gl::Context *context)
  {
      return angle::Result::Continue;
  }
  
  inline angle::Result TextureStorage::useLevelZeroWorkaroundTexture(const gl::Context *context,
                                                                     bool useLevelZeroTexture)
  {
      return angle::Result::Continue;
  }
  
  inline GLsizei TextureStorage::getRenderToTextureSamples() const
  {
      return 0;
  }
  
  using TexStoragePointer = angle::UniqueObjectPointer<TextureStorage, gl::Context>;
  
  }  // namespace rx
  
  #endif  // LIBANGLE_RENDERER_D3D_TEXTURESTORAGE_H_