* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
-/* $Id: dib1bpp.c,v 1.28 2004/05/14 22:56:17 gvg Exp $ */
+/* $Id: dib1bpp.c,v 1.29 2004/05/27 12:35:23 royce Exp $ */
#include <w32k.h>
VOID
// which direction are we going?
int xinc;
int yinc;
+ int ySrcDelta, yDstDelta;
// following 4 variables are used for the y-sweep
int dy; // dest y
dy2 = DestRect->bottom - 1;
sy1 = SourcePoint->y;
yinc = 1;
+ ySrcDelta = SourceSurf->lDelta;
+ yDstDelta = DestSurf->lDelta;
}
else
{
dy2 = DestRect->top;
sy1 = SourcePoint->y + dy1 - dy2;
yinc = -1;
+ ySrcDelta = -SourceSurf->lDelta;
+ yDstDelta = -DestSurf->lDelta;
}
if ( DestRect->left <= SourcePoint->x )
{
if ( dy == dy2 )
break;
dy += yinc;
- pd += yinc * DestSurf->lDelta;
- ps += yinc * SourceSurf->lDelta;
+ pd += yDstDelta;
+ ps += ySrcDelta;
}
}
else if ( !(0xFF00 & (srcmask<<shift) ) ) // check if ps[0] not needed...
if ( dy == dy2 )
break;
dy += yinc;
- pd += yinc * DestSurf->lDelta;
- ps += yinc * SourceSurf->lDelta;
+ pd += yDstDelta;
+ ps += ySrcDelta;
}
}
else if ( !(0xFF & (srcmask<<shift) ) ) // check if ps[1] not needed...
if ( dy == dy2 )
break;
dy += yinc;
- pd += yinc * DestSurf->lDelta;
- ps += yinc * SourceSurf->lDelta;
+ pd += yDstDelta;
+ ps += ySrcDelta;
}
}
else // both ps[0] and ps[1] are needed
if ( dy == dy2 )
break;
dy += yinc;
- pd += yinc * DestSurf->lDelta;
- ps += yinc * SourceSurf->lDelta;
+ pd += yDstDelta;
+ ps += ySrcDelta;
}
}