[Chimera-users] problem with the volume display in version 1.2540
goddard at cgl.ucsf.edu
Fri Aug 1 11:59:49 PDT 2008
I suspect you are running Linux and using Mesa (maybe version 6.5.x).
The new Chimera version 1.2540 uses OpenGL optimization (vertex buffer
objects) that makes surfaces display 2-3x faster than earlier Chimera
versions (1.2470). But Mesa which is the OpenGL implementation used on
Linux if you have not installed a graphics driver has a bug with vertex
buffer objects that causes the sliced bread appearance you observe.
To fix this you should install a graphics driver (from Nvidia or ATI
depending on your graphics card). This will also give you much faster
rendering (10-100x faster). Updating your Mesa to the latest version
might fix the problem but I have not tried that and rendering would be
done without hardware acceleration which is slow.
Currently there is no way in Chimera to turn of the vertex buffer
The Chimera web page on graphics driver problems gives some hints
about how to install a graphics driver if you have not done this before.
Magali Cottevieille wrote:
> I have just installed version 1.2540 of Chimera (I had before version
> 1.2470). There is a problem with MRC and SPIDER EM volumes: see
> attached image: left a volume in the new Chimera; right the same
> volume with the old Chimera. Is it a bug, or linked to my configuration??
> Thanks in advance,
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