RandR 1.4 restart

Adam Jackson ajax at nwnk.net
Tue Mar 1 07:59:50 PST 2011

On Tue, 2011-03-01 at 15:48 +0200, Ville Syrjälä wrote:

> So what about also allowing windows to use the scanout pixmaps as their
> backing pixmap? I'm mainly interested in something that would allow
> unredirected 32bpp windows on a 16bpp screen.

I think the terminology is a little confusing here.  I think what you're
asking for is the ability to render into a 32bpp surface from the app
perspective, but have the compositor and server know that the scanout is

That's... slightly funky, but not entirely unreasonable I suppose.
Because it's X you can't change root window depth, so you'd have to do
this by exposing the legal scanout depths (actually, Render formats) as
a list on the CRTC, and have started the server at the depth you want to
draw to.

- ajax
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