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104 lines
4.1 KiB
C++
104 lines
4.1 KiB
C++
/*****************************************************************************************
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* *
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* OpenSpace *
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* *
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* Copyright (c) 2014-2025 *
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* *
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* Permission is hereby granted, free of charge, to any person obtaining a copy of this *
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* software and associated documentation files (the "Software"), to deal in the Software *
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* without restriction, including without limitation the rights to use, copy, modify, *
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* merge, publish, distribute, sublicense, and/or sell copies of the Software, and to *
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* permit persons to whom the Software is furnished to do so, subject to the following *
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* conditions: *
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* *
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* The above copyright notice and this permission notice shall be included in all copies *
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* or substantial portions of the Software. *
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* *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, *
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* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A *
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* PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT *
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF *
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* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE *
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* OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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****************************************************************************************/
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#ifndef __OPENSPACE_MODULE_MULTIRESVOLUME___ATLASMANAGER___H__
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#define __OPENSPACE_MODULE_MULTIRESVOLUME___ATLASMANAGER___H__
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#include <glm/gtx/std_based_type.hpp>
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#include <limits>
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#include <map>
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#include <set>
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#include <vector>
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namespace ghoul::opengl { class Texture; }
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namespace openspace {
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class TSP;
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class AtlasManager {
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public:
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enum BufferIndex {
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EVEN = 0,
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ODD = 1
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};
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explicit AtlasManager(TSP* tsp);
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~AtlasManager() = default;
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void updateAtlas(BufferIndex bufferIndex, std::vector<int>& brickIndices);
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void addToAtlas(int firstBrickIndex, int lastBrickIndex, float* mappedBuffer);
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void removeFromAtlas(int brickIndex);
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bool initialize();
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const std::vector<unsigned int>& atlasMap() const;
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unsigned int atlasMapBuffer() const;
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void pboToAtlas(BufferIndex bufferIndex);
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ghoul::opengl::Texture& textureAtlas();
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unsigned int numDiskReads() const;
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unsigned int numUsedBricks() const;
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unsigned int numStreamedBricks() const;
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glm::size3_t textureSize() const;
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private:
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const unsigned int NotUsedIndex = std::numeric_limits<unsigned int>::max();
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TSP* _tsp;
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unsigned int _pboHandle[2];
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unsigned int _atlasMapBuffer;
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std::vector<unsigned int> _atlasMap;
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std::map<unsigned int, unsigned int> _brickMap;
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std::vector<unsigned int> _freeAtlasCoords;
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std::set<unsigned int> _requiredBricks;
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std::set<unsigned int> _prevRequiredBricks;
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ghoul::opengl::Texture* _textureAtlas;
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// Stats
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unsigned int _nUsedBricks;
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unsigned int _nStreamedBricks;
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unsigned int _nDiskReads;
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unsigned int _nBricksPerDim;
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unsigned int _nOtLeaves;
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unsigned int _nOtNodes;
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unsigned int _nOtLevels;
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unsigned int _brickSize;
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unsigned int _nBrickVals;
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unsigned int _volumeSize;
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unsigned int _paddedBrickDim;
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unsigned int _nBricksInAtlas;
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unsigned int _nBricksInMap;
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unsigned int _atlasDim;
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void fillVolume(float* in, float* out, unsigned int linearAtlasCoords);
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};
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} // namespace openspace
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#endif // __OPENSPACE_MODULE_MULTIRESVOLUME___ATLASMANAGER___H__
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