kc3-lang/angle/src/libANGLE/renderer/d3d/BufferD3D.h

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• Hash : ad18dc93
  Author :
  Date : 2025-04-02T16:23:50
  

  D3D11: Remove the message from Buffer11 to gl::Buffer
  
  This CL removes the D3D back end's usage of Subject/Observer from
  Buffer11 to gl::Buffer. BufferFeedback argument has been added to
  various functions and directly applied to gl::Buffer object (which will
  propagate to VertexArray and texture/XFB if needed).
  gl::Buffer::mImplObserver is removed in this CL, and no longer a
  Observer.
  
  Bug: angleproject:400711938
  Change-Id: Idf4d423904d057ab3a1e52acf8e2496df606cb89
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/6514288
  Commit-Queue: Charlie Lao <cclao@google.com>
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
  

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• src/libANGLE/renderer/d3d/BufferD3D.h

• //
  // Copyright 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.
  //
  
  // BufferD3D.h: Defines the rx::BufferD3D class, an implementation of BufferImpl.
  
  #ifndef LIBANGLE_RENDERER_D3D_BUFFERD3D_H_
  #define LIBANGLE_RENDERER_D3D_BUFFERD3D_H_
  
  #include "libANGLE/angletypes.h"
  #include "libANGLE/renderer/BufferImpl.h"
  
  #include <stdint.h>
  #include <vector>
  
  namespace gl
  {
  struct VertexAttribute;
  class VertexBinding;
  }  // namespace gl
  
  namespace rx
  {
  class BufferFactoryD3D;
  class StaticIndexBufferInterface;
  class StaticVertexBufferInterface;
  
  enum class D3DBufferUsage
  {
      STATIC,
      DYNAMIC,
  };
  
  class BufferD3D : public BufferImpl
  {
    public:
      BufferD3D(const gl::BufferState &state, BufferFactoryD3D *factory);
      ~BufferD3D() override;
  
      unsigned int getSerial() const { return mSerial; }
  
      virtual size_t getSize() const                                                     = 0;
      virtual bool supportsDirectBinding() const                                         = 0;
      virtual angle::Result markTransformFeedbackUsage(const gl::Context *context,
                                                       BufferFeedback *feedback)         = 0;
      virtual angle::Result getData(const gl::Context *context, const uint8_t **outData) = 0;
  
      // Warning: you should ensure binding really matches attrib.bindingIndex before using this
      // function.
      StaticVertexBufferInterface *getStaticVertexBuffer(const gl::VertexAttribute &attribute,
                                                         const gl::VertexBinding &binding);
      StaticIndexBufferInterface *getStaticIndexBuffer();
  
      virtual void initializeStaticData(const gl::Context *context, BufferFeedback *feedback);
      virtual void invalidateStaticData(const gl::Context *context, BufferFeedback *feedback);
  
      void promoteStaticUsage(const gl::Context *context, size_t dataSize, BufferFeedback *feedback);
  
      angle::Result getIndexRange(const gl::Context *context,
                                  gl::DrawElementsType type,
                                  size_t offset,
                                  size_t count,
                                  bool primitiveRestartEnabled,
                                  gl::IndexRange *outRange) override;
  
      BufferFactoryD3D *getFactory() const { return mFactory; }
      D3DBufferUsage getUsage() const { return mUsage; }
  
    protected:
      void updateSerial();
      void updateD3DBufferUsage(const gl::Context *context,
                                gl::BufferUsage usage,
                                BufferFeedback *feedback);
      void emptyStaticBufferCache();
  
      BufferFactoryD3D *mFactory;
      unsigned int mSerial;
      static unsigned int mNextSerial;
  
      std::vector<std::unique_ptr<StaticVertexBufferInterface>> mStaticVertexBuffers;
      StaticIndexBufferInterface *mStaticIndexBuffer;
      unsigned int mStaticBufferCacheTotalSize;
      unsigned int mStaticVertexBufferOutOfDate;
      size_t mUnmodifiedDataUse;
      D3DBufferUsage mUsage;
  };
  
  }  // namespace rx
  
  #endif  // LIBANGLE_RENDERER_D3D_BUFFERD3D_H_
  

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