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

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• Hash : 9d737966
  Author :
  Date : 2019-08-14T12:25:12
  

  Standardize copyright notices to project style
  
  For all "ANGLE Project" copyrights, standardize to the format specified
  by the style guide. Changes:
  - "Copyright (c)" and "Copyright(c)" changed to just "Copyright".
  - Removed the second half of date ranges ("Y1Y1-Y2Y2"->"Y1Y1").
  - Fixed a small number of files that had no copyright date using the
    initial commit year from the version control history.
  - Fixed one instance of copyright being "The ANGLE Project" rather than
    "The ANGLE Project Authors"
  
  These changes are applied both to the copyright of source file, and
  where applicable to copyright statements that are generated by
  templates.
  
  BUG=angleproject:3811
  
  Change-Id: I973dd65e4ef9deeba232d5be74c768256a0eb2e5
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1754397
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  

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• src/libANGLE/IndexRangeCache.cpp

• //
  // Copyright 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.cpp: Defines the gl::IndexRangeCache class which stores information about
  // ranges of indices.
  
  #include "libANGLE/IndexRangeCache.h"
  
  #include "common/debug.h"
  #include "libANGLE/formatutils.h"
  
  namespace gl
  {
  
  IndexRangeCache::IndexRangeCache() {}
  
  IndexRangeCache::~IndexRangeCache() {}
  
  void IndexRangeCache::addRange(DrawElementsType type,
                                 size_t offset,
                                 size_t count,
                                 bool primitiveRestartEnabled,
                                 const IndexRange &range)
  {
      mIndexRangeCache[IndexRangeKey(type, offset, count, primitiveRestartEnabled)] = range;
  }
  
  bool IndexRangeCache::findRange(DrawElementsType type,
                                  size_t offset,
                                  size_t count,
                                  bool primitiveRestartEnabled,
                                  IndexRange *outRange) const
  {
      auto i = mIndexRangeCache.find(IndexRangeKey(type, offset, count, primitiveRestartEnabled));
      if (i != mIndexRangeCache.end())
      {
          if (outRange)
          {
              *outRange = i->second;
          }
          return true;
      }
      else
      {
          if (outRange)
          {
              *outRange = IndexRange();
          }
          return false;
      }
  }
  
  void IndexRangeCache::invalidateRange(size_t offset, size_t size)
  {
      size_t invalidateStart = offset;
      size_t invalidateEnd   = offset + size;
  
      auto i = mIndexRangeCache.begin();
      while (i != mIndexRangeCache.end())
      {
          size_t rangeStart = i->first.offset;
          size_t rangeEnd =
              i->first.offset + (GetDrawElementsTypeSize(i->first.type) * i->first.count);
  
          if (invalidateEnd < rangeStart || invalidateStart > rangeEnd)
          {
              ++i;
          }
          else
          {
              mIndexRangeCache.erase(i++);
          }
      }
  }
  
  void IndexRangeCache::clear()
  {
      mIndexRangeCache.clear();
  }
  
  IndexRangeCache::IndexRangeKey::IndexRangeKey()
      : IndexRangeCache::IndexRangeKey(DrawElementsType::InvalidEnum, 0, 0, false)
  {}
  
  IndexRangeCache::IndexRangeKey::IndexRangeKey(DrawElementsType type_,
                                                size_t offset_,
                                                size_t count_,
                                                bool primitiveRestartEnabled_)
      : type(type_), offset(offset_), count(count_), primitiveRestartEnabled(primitiveRestartEnabled_)
  {}
  
  bool IndexRangeCache::IndexRangeKey::operator<(const IndexRangeKey &rhs) const
  {
      if (type != rhs.type)
      {
          return type < rhs.type;
      }
      if (offset != rhs.offset)
      {
          return offset < rhs.offset;
      }
      if (count != rhs.count)
      {
          return count < rhs.count;
      }
      if (primitiveRestartEnabled != rhs.primitiveRestartEnabled)
      {
          return primitiveRestartEnabled;
      }
      return false;
  }
  
  }  // namespace gl
  

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