83 lines
2.5 KiB
C++
83 lines
2.5 KiB
C++
/**
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*
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* RenderPipeline
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*
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* Copyright (c) 2014-2016 tobspr <tobias.springer1@gmail.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies 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
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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*/
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#ifndef RP_SHADOW_ATLAS_H
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#define RP_SHADOW_ATLAS_H
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#include "pandabase.h"
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#include "lvecBase4.h"
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NotifyCategoryDecl(shadowatlas, EXPORT_CLASS, EXPORT_TEMPL);
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/**
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* @brief Class which manages distributing shadow maps in an atlas.
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* @details This class manages the shadow atlas. It handles finding and reserving
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* space for new shadow maps.
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*/
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class ShadowAtlas {
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PUBLISHED:
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ShadowAtlas(size_t size, size_t tile_size = 32);
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~ShadowAtlas();
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inline int get_num_used_tiles() const;
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inline float get_coverage() const;
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MAKE_PROPERTY(num_used_tiles, get_num_used_tiles);
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MAKE_PROPERTY(coverage, get_coverage);
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public:
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LVecBase4i find_and_reserve_region(size_t tile_width, size_t tile_height);
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void free_region(const LVecBase4i& region);
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inline LVecBase4f region_to_uv(const LVecBase4i& region);
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inline int get_tile_size() const;
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inline int get_required_tiles(size_t resolution) const;
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protected:
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void init_tiles();
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inline void set_tile(size_t x, size_t y, bool flag);
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inline bool get_tile(size_t x, size_t y) const;
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inline bool region_is_free(size_t x, size_t y, size_t w, size_t h) const;
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void reserve_region(size_t x, size_t y, size_t w, size_t h);
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size_t _size;
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size_t _num_tiles;
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size_t _tile_size;
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size_t _num_used_tiles;
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bool* _flags;
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};
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#include "shadow_atlas.I"
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#endif // RP_SHADOW_ATLAS_H
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