Premultiply background RGB values if alpha is used
@@ -785,6 +785,12 @@ xloadcols(void)
if (opt_alpha)
alpha = strtof(opt_alpha, NULL);
dc.col[defaultbg].color.alpha = (unsigned short)(0xffff * alpha);
+ dc.col[defaultbg].color.red =
+ ((unsigned short)(dc.col[defaultbg].color.red * alpha)) & 0xff00;
+ dc.col[defaultbg].color.green =
+ ((unsigned short)(dc.col[defaultbg].color.green * alpha)) & 0xff00;
+ dc.col[defaultbg].color.blue =
+ ((unsigned short)(dc.col[defaultbg].color.blue * alpha)) & 0xff00;
dc.col[defaultbg].pixel &= 0x00FFFFFF;
dc.col[defaultbg].pixel |= (unsigned char)(0xff * alpha) << 24;
loaded = 1;
