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Diffstat (limited to 'engines/bladerunner/zbuffer.h')
-rw-r--r-- | engines/bladerunner/zbuffer.h | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/engines/bladerunner/zbuffer.h b/engines/bladerunner/zbuffer.h new file mode 100644 index 0000000000..5c771b1381 --- /dev/null +++ b/engines/bladerunner/zbuffer.h @@ -0,0 +1,87 @@ +/* ScummVM - Graphic Adventure Engine + * + * ScummVM is the legal property of its developers, whose names + * are too numerous to list here. Please refer to the COPYRIGHT + * file distributed with this source distribution. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + */ + +#ifndef BLADERUNNER_ZBUFFER_H +#define BLADERUNNER_ZBUFFER_H + +#include "bladerunner/bladerunner.h" + +#include "common/rect.h" + +namespace BladeRunner { + +#define MAX_DIRTY_RECTS 20 + +class ZBufferDirtyRects { + int _count; + Common::Rect _rects[MAX_DIRTY_RECTS]; + +public: + ZBufferDirtyRects() : + _count(0) + {} + + void reset(); + bool add(Common::Rect rect); + void extendExisting(); + int getCount(); + bool popRect(Common::Rect *rect); +}; + +class ZBuffer { + int _width; + int _height; + + uint16 *_zbuf1; + uint16 *_zbuf2; + + ZBufferDirtyRects *_dirtyRects;; + + bool _disabled; + +public: + ZBuffer(); + ~ZBuffer(); + + void init(int width, int height); + bool decodeData(const uint8 *data, int size); + + uint16 *getData(); + uint16 getZValue(int x, int y); + +private: + void reset(); + void blit(Common::Rect rect); + +public: + void mark(Common::Rect rect); + void clean(); + void resetUpdates(); + + // Only called from Scene::resume which is not yet implemented + void disable(); + void enable(); +}; + +} // End of namespace BladeRunner + +#endif |