diff options
| -rw-r--r-- | src/gui/painting/qgrayraster.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/gui/painting/qgrayraster.c b/src/gui/painting/qgrayraster.c index b536028fe3..5ce1895541 100644 --- a/src/gui/painting/qgrayraster.c +++ b/src/gui/painting/qgrayraster.c @@ -202,13 +202,13 @@ #define ONE_PIXEL ( 1L << PIXEL_BITS ) #define PIXEL_MASK ( -1L << PIXEL_BITS ) #define TRUNC( x ) ( (TCoord)( (x) >> PIXEL_BITS ) ) -#define SUBPIXELS( x ) ( (TPos)(x) << PIXEL_BITS ) +#define SUBPIXELS( x ) ( (TPos)(x) * ( 1 << PIXEL_BITS ) ) #define FLOOR( x ) ( (x) & -ONE_PIXEL ) #define CEILING( x ) ( ( (x) + ONE_PIXEL - 1 ) & -ONE_PIXEL ) #define ROUND( x ) ( ( (x) + ONE_PIXEL / 2 ) & -ONE_PIXEL ) #if PIXEL_BITS >= 6 -#define UPSCALE( x ) ( (x) << ( PIXEL_BITS - 6 ) ) +#define UPSCALE( x ) ( (x) * ( 1 << ( PIXEL_BITS - 6 ) ) ) #define DOWNSCALE( x ) ( (x) >> ( PIXEL_BITS - 6 ) ) #else #define UPSCALE( x ) ( (x) >> ( 6 - PIXEL_BITS ) ) |