namespace rw {

struct Engine
{
	ObjPipeline *defaultPipeline;
	int32 rasterNativeOffset;

	void   (*rasterCreate)(Raster*);
	uint8 *(*rasterLock)(Raster*, int32 level);
	void   (*rasterUnlock)(Raster*, int32 level);
	int32  (*rasterNumLevels)(Raster*);
	void   (*rasterFromImage)(Raster*, Image*);
};

extern Engine engine[NUM_PLATFORMS];

namespace null {
	void   rasterCreate(Raster*);
	uint8 *rasterLock(Raster*, int32 level);
	void   rasterUnlock(Raster*, int32 level);
	int32  rasterNumLevels(Raster*);
	void   rasterFromImage(Raster*, Image*);
}

}