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/* 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() const;
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() const;
uint16 getZValue(int x, int y) const;
private:
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
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