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

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• Hash : 8dc27f99
  Author :
  Date : 2018-11-29T11:45:44
  

  Use packed enum for DrawElementsType.
  
  The packing and unpacking take a few extra instructions. But it
  completely obviates the need for any switches in the validation code.
  Speed is slightly faster or the similar depending on the back-end.
  
  Also add gl_angle_ext.xml to GL entry point generator inputs. This was
  missing and would cause the code generation to miss certain changes.
  
  Bug: angleproject:2985
  Change-Id: I1ea41a71db71135000166ead8305ec42d22ff7b3
  Reviewed-on: https://chromium-review.googlesource.com/c/1351729
  Commit-Queue: Jamie Madill <jmadill@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)       = 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);
      virtual void invalidateStaticData(const gl::Context *context);
  
      void promoteStaticUsage(const gl::Context *context, size_t dataSize);
  
      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);
      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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