kc3-lang/angle/src/libANGLE/renderer/null/BufferNULL.h

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• Hash : 1b60d8d2
  Author :
  Date : 2017-02-10T14:56:55
  

  Add artificial limits to the total memory allocated by the NULL backend.
  
  Fuzzer tests were capable of allocating very large chunks of memory by
  calling glBufferData with a null pointer.  This sets a limit before the
  NULL backend starts returning out of memory GL errors.
  
  BUG=602737
  
  Change-Id: Ic53ebcf999f951b96c1df82e4db57e949d03c908
  Reviewed-on: https://chromium-review.googlesource.com/441184
  Commit-Queue: Geoff Lang <geofflang@chromium.org>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  

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• src/libANGLE/renderer/null/BufferNULL.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.
  //
  // BufferNULL.h:
  //    Defines the class interface for BufferNULL, implementing BufferImpl.
  //
  
  #ifndef LIBANGLE_RENDERER_NULL_BUFFERNULL_H_
  #define LIBANGLE_RENDERER_NULL_BUFFERNULL_H_
  
  #include "libANGLE/renderer/BufferImpl.h"
  
  namespace rx
  {
  
  class AllocationTrackerNULL;
  
  class BufferNULL : public BufferImpl
  {
    public:
      BufferNULL(const gl::BufferState &state, AllocationTrackerNULL *allocationTracker);
      ~BufferNULL() override;
  
      gl::Error setData(ContextImpl *context,
                        GLenum target,
                        const void *data,
                        size_t size,
                        GLenum usage) override;
      gl::Error setSubData(ContextImpl *context,
                           GLenum target,
                           const void *data,
                           size_t size,
                           size_t offset) override;
      gl::Error copySubData(ContextImpl *contextImpl,
                            BufferImpl *source,
                            GLintptr sourceOffset,
                            GLintptr destOffset,
                            GLsizeiptr size) override;
      gl::Error map(ContextImpl *contextImpl, GLenum access, GLvoid **mapPtr) override;
      gl::Error mapRange(ContextImpl *contextImpl,
                         size_t offset,
                         size_t length,
                         GLbitfield access,
                         GLvoid **mapPtr) override;
      gl::Error unmap(ContextImpl *contextImpl, GLboolean *result) override;
  
      gl::Error getIndexRange(GLenum type,
                              size_t offset,
                              size_t count,
                              bool primitiveRestartEnabled,
                              gl::IndexRange *outRange) override;
  
    private:
      std::vector<uint8_t> mData;
  
      AllocationTrackerNULL *mAllocationTracker;
  };
  
  }  // namespace rx
  
  #endif  // LIBANGLE_RENDERER_NULL_BUFFERNULL_H_
  

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