[Xquartz-dev] glx and multi-sampling

[Pelle Johansson]

I ran into the same problem with the fbconfig extension. The problem  
is that it is probably not supported for direct rendering, only for  
indirect.

In glxinfo, check out the section called "GLX extensions", those are  
the ones active for the current connection. By default there's no  
multisampling in OS X.
Then set the env var LIBGL_ALWAYS_INDIRECT=1, and try again,  
multisampling is supported (but indirect connection is of course much  
slower).

The solution is to get a newer mesa library, with better support. I  
made some work on a recent mesa, but it's not complete yet, and a  
better solution would be to implement the XF86Dri extension instead of  
Apple-DRI. Check out the thread "apple-dri for TOT mesa".
-- 
Pelle Johansson

6 feb 2008 kl. 01.12 skrev Luc Bourhis:

> Hi,
>
> running glxinfo with the latest version (2.1.2), it turns out that  
> glx is at version 1.2, that GLX_ARB_multisample is available on the  
> both of the server and the client side but that multi-sampling is  
> actuall off:
>
> Visual ID: 27  depth=24  class=TrueColor
>    bufferSize=32 level=0 renderType=rgba doubleBuffer=0 stereo=0
>    rgba: redSize=8 greenSize=8 blueSize=8 alphaSize=8
>    auxBuffers=0 depthSize=16 stencilSize=8
>    accum: redSize=16 greenSize=16 blueSize=16 alphaSize=16
>    multiSample=0  multiSampleBuffers=0
>    ^^^^^^^^^^^^^^^^^^^^^^^^^^^
>
>    visualCaveat=None
>
>
> I've got a Mac Pro with a GeForce 7300 GT and multisampling is  
> available if I program with the native Apple API's.
>
> Thanks for any information,
>
> Luc Bourhis_______________________________________________
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