kc3-lang/angle/src/libANGLE/IndexRangeCache.h

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• Author : Jamie Madill
  Date : 2018-11-29 11:45:44
  Hash : 8dc27f99
  Message : 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>

• src/libANGLE/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 gl::IndexRangeCache class which stores information about
  // ranges of indices.
  
  #ifndef LIBANGLE_INDEXRANGECACHE_H_
  #define LIBANGLE_INDEXRANGECACHE_H_
  
  #include "angle_gl.h"
  #include "common/PackedEnums.h"
  #include "common/angleutils.h"
  #include "common/mathutil.h"
  
  #include <map>
  
  namespace gl
  {
  
  class IndexRangeCache
  {
    public:
      IndexRangeCache();
      ~IndexRangeCache();
  
      void addRange(DrawElementsType type,
                    size_t offset,
                    size_t count,
                    bool primitiveRestartEnabled,
                    const IndexRange &range);
      bool findRange(DrawElementsType type,
                     size_t offset,
                     size_t count,
                     bool primitiveRestartEnabled,
                     IndexRange *outRange) const;
  
      void invalidateRange(size_t offset, size_t size);
      void clear();
  
    private:
      struct IndexRangeKey
      {
          IndexRangeKey();
          IndexRangeKey(DrawElementsType type, size_t offset, size_t count, bool primitiveRestart);
  
          bool operator<(const IndexRangeKey &rhs) const;
  
          DrawElementsType type;
          size_t offset;
          size_t count;
          bool primitiveRestartEnabled;
      };
  
      typedef std::map<IndexRangeKey, IndexRange> IndexRangeMap;
      IndexRangeMap mIndexRangeCache;
  };
  
  }  // namespace gl
  
  #endif  // LIBANGLE_INDEXRANGECACHE_H_