1 /* ScummVM - Graphic Adventure Engine 2 * 3 * ScummVM is the legal property of its developers, whose names 4 * are too numerous to list here. Please refer to the COPYRIGHT 5 * file distributed with this source distribution. 6 * 7 * This program is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU General Public License 9 * as published by the Free Software Foundation; either version 2 10 * of the License, or (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 20 * 21 */ 22 23 #ifndef BLADERUNNER_ZBUFFER_H 24 #define BLADERUNNER_ZBUFFER_H 25 26 #include "bladerunner/bladerunner.h" 27 28 #include "common/rect.h" 29 30 namespace BladeRunner { 31 32 #define MAX_DIRTY_RECTS 20 33 34 class ZBufferDirtyRects { 35 int _count; 36 Common::Rect _rects[MAX_DIRTY_RECTS]; 37 38 public: ZBufferDirtyRects()39 ZBufferDirtyRects() : 40 _count(0) 41 {} 42 43 void reset(); 44 bool add(Common::Rect rect); 45 void extendExisting(); 46 int getCount() const; 47 bool popRect(Common::Rect *rect); 48 }; 49 50 class ZBuffer { 51 int _width; 52 int _height; 53 54 uint16 *_zbuf1; 55 uint16 *_zbuf2; 56 57 ZBufferDirtyRects *_dirtyRects; 58 59 bool _disabled; 60 61 public: 62 ZBuffer(); 63 ~ZBuffer(); 64 65 void init(int width, int height); 66 bool decodeData(const uint8 *data, int size); 67 68 uint16 *getData() const; 69 uint16 getZValue(int x, int y) const; 70 71 private: 72 void blit(Common::Rect rect); 73 74 public: 75 void mark(Common::Rect rect); 76 void clean(); 77 void resetUpdates(); 78 79 // Only called from Scene::resume which is not yet implemented 80 void disable(); 81 void enable(); 82 }; 83 84 } // End of namespace BladeRunner 85 86 #endif 87