218 #define ONE_PIXEL       ( 1L << PIXEL_BITS )  macro
220 #define SUBPIXELS( x )  ( (TPos)(x) * ONE_PIXEL )
221 #define FLOOR( x )      ( (x) & -ONE_PIXEL )
222 #define CEILING( x )    ( ( (x) + ONE_PIXEL - 1 ) & -ONE_PIXEL )
223 #define ROUND( x )      ( ( (x) + ONE_PIXEL / 2 ) & -ONE_PIXEL )
226 #define UPSCALE( x )    ( (x) * ( ONE_PIXEL >> 6 ) )
583     p     = ( ONE_PIXEL - fx1 ) * ( y2 - y1 );  in gray_render_scanline()
584     first = ONE_PIXEL;  in gray_render_scanline()
609       p = ONE_PIXEL * ( y2 - y1 + delta );  in gray_render_scanline()
624         ras.area  += (TArea)ONE_PIXEL * delta;  in gray_render_scanline()
633     ras.area  += (TArea)( fx2 + ONE_PIXEL - first ) * delta;  in gray_render_scanline()
680       first = ONE_PIXEL;  in gray_render_line()
688       delta = (int)( first + first - ONE_PIXEL );  in gray_render_line()
733       delta      = (int)( fy2 - ONE_PIXEL + first );  in gray_render_line()
741     p     = ( ONE_PIXEL - fy1 ) * dx;  in gray_render_line()
742     first = ONE_PIXEL;  in gray_render_line()
769       p     = ONE_PIXEL * dx;  in gray_render_line()
785                                        (TCoord)( ONE_PIXEL - first ), x2,  in gray_render_line()
795                                    (TCoord)( ONE_PIXEL - first ), to_x,  in gray_render_line()
846           fy2 = ONE_PIXEL;  in gray_render_line()
859           fy1 = ONE_PIXEL;  in gray_render_line()
877                   prod - dx * ONE_PIXEL                  >  0 ) /* left */  in gray_render_line()
881           prod -= dy * ONE_PIXEL;  in gray_render_line()
884           fx1 = ONE_PIXEL;  in gray_render_line()
888         else if ( prod - dx * ONE_PIXEL                  <= 0 &&  in gray_render_line()
889                   prod - dx * ONE_PIXEL + dy * ONE_PIXEL >  0 ) /* up */  in gray_render_line()
891           prod -= dx * ONE_PIXEL;  in gray_render_line()
893           fy2 = ONE_PIXEL;  in gray_render_line()
900         else if ( prod - dx * ONE_PIXEL + dy * ONE_PIXEL <= 0 &&  in gray_render_line()
901                   prod                  + dy * ONE_PIXEL >= 0 ) /* right */  in gray_render_line()
903           prod += dy * ONE_PIXEL;  in gray_render_line()
904           fx2 = ONE_PIXEL;  in gray_render_line()
917           prod += dx * ONE_PIXEL;  in gray_render_line()
921           fy1 = ONE_PIXEL;  in gray_render_line()
1001     while ( dx > ONE_PIXEL / 4 )  in gray_render_conic()
1110       s_limit = L * (TPos)( ONE_PIXEL / 6 );  in gray_render_cubic()
1382           gray_hline( RAS_VAR_ x, yindex, cover * ( ONE_PIXEL * 2 ),  in gray_sweep()
1386         area   = cover * ( ONE_PIXEL * 2 ) - cell->area;  in gray_sweep()
1395         gray_hline( RAS_VAR_ x, yindex, cover * ( ONE_PIXEL * 2 ),  in gray_sweep()