kc3-lang/angle/src/libGLESv2/renderer/IndexRangeCache.h

Branch : - branch - main - tag -

• Show log

  Commit

• Author : Jamie Madill
  Date : 2014-08-25 15:47:49
  Hash : 2b97681b
  Message : Extract validation from VertexDataManager.cpp to the API. We can check for buffer overflow at draw validation time, before processing any vertex data. BUG=angle:571 Change-Id: I4f49629b98c17ca28e25baed74cad4ae5341b20f Reviewed-on: https://chromium-review.googlesource.com/210647 Tested-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Shannon Woods <shannonwoods@chromium.org>

• src/libGLESv2/renderer/IndexRangeCache.h

• //
  // Copyright (c) 2013 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.
  //
  
  // IndexRangeCache.h: Defines the rx::IndexRangeCache class which stores information about
  // ranges of indices.
  
  #ifndef LIBGLESV2_RENDERER_INDEXRANGECACHE_H_
  #define LIBGLESV2_RENDERER_INDEXRANGECACHE_H_
  
  #include "common/angleutils.h"
  #include "common/mathutil.h"
  #include <map>
  
  namespace rx
  {
  
  class IndexRangeCache
  {
    public:
      void addRange(GLenum type, unsigned int offset, GLsizei count, const RangeUI &range,
                    unsigned int streamOffset);
      bool findRange(GLenum type, unsigned int offset, GLsizei count, RangeUI *rangeOut,
                     unsigned int *outStreamOffset) const;
  
      void invalidateRange(unsigned int offset, unsigned int size);
      void clear();
  
      static RangeUI ComputeRange(GLenum type, const GLvoid *indices, GLsizei count);
  
    private:
      struct IndexRange
      {
          GLenum type;
          unsigned int offset;
          GLsizei count;
  
          IndexRange();
          IndexRange(GLenum type, intptr_t offset, GLsizei count);
  
          bool operator<(const IndexRange& rhs) const;
      };
  
      struct IndexBounds
      {
          RangeUI range;
          unsigned int streamOffset;
  
          IndexBounds();
          IndexBounds(const RangeUI &range, unsigned int offset);
      };
  
      typedef std::map<IndexRange, IndexBounds> IndexRangeMap;
      IndexRangeMap mIndexRangeCache;
  };
  
  }
  
  #endif LIBGLESV2_RENDERER_INDEXRANGECACHE_H