[PATCH] modesetting: 24bpp are too confusing, shadow our way out.

[Dave Airlie]

>
> We should already be hiding this from clients -- 24bpp front buffer
> exposes 32bpp images and shared memory pixmaps. Are you saying that
> in-server software rendering to 24bpp object is broken?

Well clients doing things direct to the 24bpp window might have issues?

I can't tell for sure, its a background window under gnome-shell or nautilus,
ends up covering 3/4 of the screen instead of the whole screen in the
case I saw,

so maybe 24bpp putimage is busted, but who knows, all I know is we have hacks
for qt in place that force it to use its native backend when it finds
a cirrus card,
and that clients seem to screw this up quite often.

Dave.