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 16bpp? 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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