Re: XDBE extension
Re: XDBE extension
- Subject: Re: XDBE extension
- From: Jeremy Huddleston <email@hidden>
- Date: Tue, 16 Nov 2010 10:05:59 -0800
Chances are it's a bug in translating the 15bit "X11" buffer into a 32bit "CoreGraphics" buffer. Do you have sample code that I can use? Please create a bug report at http://xquartz.macosforge.org
Thanks.
On Nov 16, 2010, at 02:23, René J.V. Bertin wrote:
> Hello,
>
> I was seeing some unexpected behaviour when using the X11 Double
> Buffer Extension. Code that has always and still works perfectly on
> the OSX 10.4.11 X11 server and on the X.Org server in the current
> Cygwin distribution gives a corrupted window content on OS X 10.6.4
> and 10.6.5, using either Apple's X11 server or the current XQuartz
> server. With corrupted I mean that the image is split/doubled
> horizontally, and what has to be a white background is rendered in
> some sort of purple.
>
> Apparently I was selecting the wrong visual? I got a 15bit visual on
> the 10.6 server (number 884), but a 24bit visual on the 10.4 server.
> Now that I'm searching the list of DBE-supporting visuals to find the
> one with the highest perflevel (they're all at 0 btw) and the deepest
> depth, I obtain the same visual as I'm using otherwise (without XDBE),
> and behaviour is correct. Still, I'd like to understand what was wrong
> with the other visual, as there was no information available that made
> it evident to avoid it ... that would clearly be a good idea as using
> it can generate a server crash!
>
> TIA,
> René
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