kc3-lang/angle/src/libANGLE/renderer/vulkan/BufferVk.h

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• Hash : 879f90d2
  Author :
  Date : 2018-03-01T11:45:20
  

  Vulkan: Avoid recopying the data every time we draw line loops
  
  Use the Observer pattern to get notified when the BufferVk we've copied our data
  from is changing. We will only recopy the data if anything has changed, but otherwise
  we'll keep drawing with the same index buffer we've created previously.
  
  Bug: angleproject:2335
  
  Change-Id: Ib65677b4d5ec90c46a5e3b975fffd1fddeed59e7
  Reviewed-on: https://chromium-review.googlesource.com/948622
  Commit-Queue: Luc Ferron <lucferron@chromium.org>
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  

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• src/libANGLE/renderer/vulkan/BufferVk.h

• //
  // Copyright 2016 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.
  //
  // BufferVk.h:
  //    Defines the class interface for BufferVk, implementing BufferImpl.
  //
  
  #ifndef LIBANGLE_RENDERER_VULKAN_BUFFERVK_H_
  #define LIBANGLE_RENDERER_VULKAN_BUFFERVK_H_
  
  #include "libANGLE/Observer.h"
  #include "libANGLE/renderer/BufferImpl.h"
  #include "libANGLE/renderer/vulkan/vk_utils.h"
  
  namespace rx
  {
  class RendererVk;
  
  class BufferVk : public BufferImpl, public ResourceVk, public angle::Subject
  {
    public:
      BufferVk(const gl::BufferState &state);
      ~BufferVk() override;
      void destroy(const gl::Context *context) override;
  
      gl::Error setData(const gl::Context *context,
                        gl::BufferBinding target,
                        const void *data,
                        size_t size,
                        gl::BufferUsage usage) override;
      gl::Error setSubData(const gl::Context *context,
                           gl::BufferBinding target,
                           const void *data,
                           size_t size,
                           size_t offset) override;
      gl::Error copySubData(const gl::Context *context,
                            BufferImpl *source,
                            GLintptr sourceOffset,
                            GLintptr destOffset,
                            GLsizeiptr size) override;
      gl::Error map(const gl::Context *context, GLenum access, void **mapPtr) override;
      gl::Error mapRange(const gl::Context *context,
                         size_t offset,
                         size_t length,
                         GLbitfield access,
                         void **mapPtr) override;
      gl::Error unmap(const gl::Context *context, GLboolean *result) override;
  
      gl::Error getIndexRange(const gl::Context *context,
                              GLenum type,
                              size_t offset,
                              size_t count,
                              bool primitiveRestartEnabled,
                              gl::IndexRange *outRange) override;
  
      const vk::Buffer &getVkBuffer() const;
  
    private:
      vk::Error setDataImpl(ContextVk *contextVk, const uint8_t *data, size_t size, size_t offset);
      void release(RendererVk *renderer);
  
      vk::Buffer mBuffer;
      vk::DeviceMemory mBufferMemory;
      size_t mCurrentRequiredSize;
  };
  
  }  // namespace rx
  
  #endif  // LIBANGLE_RENDERER_VULKAN_BUFFERVK_H_
  

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