1 // 2 // Copyright (c) 2013 The ANGLE Project Authors. All rights reserved. 3 // Use of this source code is governed by a BSD-style license that can be 4 // found in the LICENSE file. 5 // 6 7 // IndexRangeCache.h: Defines the rx::IndexRangeCache class which stores information about 8 // ranges of indices. 9 10 #ifndef LIBGLESV2_RENDERER_INDEXRANGECACHE_H_ 11 #define LIBGLESV2_RENDERER_INDEXRANGECACHE_H_ 12 13 #include "common/angleutils.h" 14 #include <map> 15 16 namespace rx 17 { 18 19 class IndexRangeCache 20 { 21 public: 22 void addRange(GLenum type, unsigned int offset, GLsizei count, unsigned int minIdx, unsigned int maxIdx, 23 unsigned int streamOffset); 24 bool findRange(GLenum type, unsigned int offset, GLsizei count, unsigned int *outMinIndex, 25 unsigned int *outMaxIndex, unsigned int *outStreamOffset) const; 26 27 void invalidateRange(unsigned int offset, unsigned int size); 28 void clear(); 29 30 private: 31 struct IndexRange 32 { 33 GLenum type; 34 unsigned int offset; 35 GLsizei count; 36 37 IndexRange(); 38 IndexRange(GLenum type, intptr_t offset, GLsizei count); 39 40 bool operator<(const IndexRange& rhs) const; 41 }; 42 43 struct IndexBounds 44 { 45 unsigned int minIndex; 46 unsigned int maxIndex; 47 unsigned int streamOffset; 48 49 IndexBounds(); 50 IndexBounds(unsigned int minIdx, unsigned int maxIdx, unsigned int offset); 51 }; 52 53 typedef std::map<IndexRange, IndexBounds> IndexRangeMap; 54 IndexRangeMap mIndexRangeCache; 55 }; 56 57 } 58 59 #endif LIBGLESV2_RENDERER_INDEXRANGECACHE_H 60
