287   ximage->red_mask=header.red_mask;  in ReadXWDImage()
404   if ((header.ncolors == 0U) || (ximage->red_mask != 0) ||  in ReadXWDImage()
424           red_mask,  in ReadXWDImage()  local
430         red_mask=ximage->red_mask;  in ReadXWDImage()
432         while ((red_mask != 0) && ((red_mask & 0x01) == 0))  in ReadXWDImage()
434           red_mask>>=1;  in ReadXWDImage()
463               index=(Quantum) ((pixel >> red_shift) & red_mask);  in ReadXWDImage()
493               color=(pixel >> red_shift) & red_mask;  in ReadXWDImage()
494               if (red_mask != 0)  in ReadXWDImage()
495                 color=(color*65535UL)/red_mask;  in ReadXWDImage()
745   xwd_info.red_mask=(CARD32)  in WriteXWDImage()