kc3-lang/angle/src/libANGLE/renderer/BufferImpl.h

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• Hash : 0946393d
  Author :
  Date : 2018-04-04T05:26:59
  

  Move Buffer Subject/Observer to front end.
  
  This makes BufferImpl into an Observer Subject. It also refactors
  the Vertex Array updates for the D3D11 backend use more of a dirty
  bit coding style.
  
  This change makes it so Buffer contents changes trigger front-end
  dirty bits from the back-end, which may be undesirable.
  
  Bug: angleproject:2389
  Change-Id: Iac8ce1171284a86851c18cd1373ddf24fcefe40b
  Reviewed-on: https://chromium-review.googlesource.com/979812
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  

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• src/libANGLE/renderer/BufferImpl.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.
  //
  
  // BufferImpl.h: Defines the abstract rx::BufferImpl class.
  
  #ifndef LIBANGLE_RENDERER_BUFFERIMPL_H_
  #define LIBANGLE_RENDERER_BUFFERIMPL_H_
  
  #include "common/angleutils.h"
  #include "common/mathutil.h"
  #include "libANGLE/Error.h"
  #include "libANGLE/Observer.h"
  #include "libANGLE/PackedGLEnums.h"
  
  #include <stdint.h>
  
  namespace gl
  {
  class BufferState;
  class Context;
  }
  
  namespace rx
  {
  // We use two set of Subject messages. The CONTENTS_CHANGED message is signaled whenever data
  // changes, to trigger re-translation or other events. Some buffers only need to be updated when the
  // underlying driver object changes - this is notified via the STORAGE_CHANGED message.
  class BufferImpl : public angle::Subject
  {
    public:
      BufferImpl(const gl::BufferState &state) : mState(state) {}
      virtual ~BufferImpl() {}
      virtual void destroy(const gl::Context *context) {}
  
      virtual gl::Error setData(const gl::Context *context,
                                gl::BufferBinding target,
                                const void *data,
                                size_t size,
                                gl::BufferUsage usage)                                = 0;
      virtual gl::Error setSubData(const gl::Context *context,
                                   gl::BufferBinding target,
                                   const void *data,
                                   size_t size,
                                   size_t offset)                                     = 0;
      virtual gl::Error copySubData(const gl::Context *context,
                                    BufferImpl *source,
                                    GLintptr sourceOffset,
                                    GLintptr destOffset,
                                    GLsizeiptr size) = 0;
      virtual gl::Error map(const gl::Context *context, GLenum access, void **mapPtr) = 0;
      virtual gl::Error mapRange(const gl::Context *context,
                                 size_t offset,
                                 size_t length,
                                 GLbitfield access,
                                 void **mapPtr) = 0;
      virtual gl::Error unmap(const gl::Context *context, GLboolean *result) = 0;
  
      virtual gl::Error getIndexRange(const gl::Context *context,
                                      GLenum type,
                                      size_t offset,
                                      size_t count,
                                      bool primitiveRestartEnabled,
                                      gl::IndexRange *outRange) = 0;
  
    protected:
      const gl::BufferState &mState;
  };
  }
  
  #endif  // LIBANGLE_RENDERER_BUFFERIMPL_H_
  

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