> Gah, I this thing is weirder than I thought.  colour expansion in
> XFree works now :)  But, what cost me half the day to figure out is
> this: to draw a horizontal line of monochrome data you would...
> - set a raster op
> - set fore- and background colour
> - tell it where to start and how long a line is
> - start to feed it uint32_t's which get drawn one after the other.

Well, for zero-width lines you'd likely be better off using the
linedraw (or filled-rectangle, if horizontal or vertical) support.

> That's what all others do.  The GX fills the entire line with the
> first longword you write, apparently it thinks it's some sort of
> pattern.

Ah, I didn't know that.  I don't think I've tried with x1 set greater
than x0+32.  I'll have to remember the trick.

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