[Chimera-users] Drawing Artifacts

[Greg Couch]

Please file a bug report using the Chimera's Help/Report a Bug dialog and 
attach the data files needed to recreate the bug.  That way I can figure 
out more about what's going on.  I'd also recommend updating your graphics 
driver, as that often fixes weird graphics bugs.

 	- Greg

On Thu, 8 Feb 2007, Albion Baucom wrote:

> Date: Thu, 8 Feb 2007 12:10:35 -0800
> From: Albion Baucom <baucom at msg.ucsf.edu>
> To: chimera-users at cgl.ucsf.edu
> Subject: [Chimera-users] Drawing Artifacts
> 
> Using the latest stable current production release of Chimera,
> 1.2304, I have begun to experience some drawing problems that I never
> had in previous versions.
>
> Specifically I frequently get a thin wireframe rendering of my
> protein structure when I draw the structure as a ribbon with a volume
> open at the same time. This wire frame persists even when I turn the
> display of the molecule off in the model panel, and it also does not
> rotate or translate if the protein is selected as the only active
> object. In effect it leaves behind a ghost image. Curiously this
> representation alternates from a light gray/white color to black when
> I open dialog boxes. The artifact toggles on and off with the volume
> in some instances.
>
> My processing and graphics hardware have not changed recently, nor
> has operating system (Linux). I do not experience this behavior with
> my last version of Chimera, 1.2199; it never renders this artifact.
>
> I have a nVidia Geforce 6800GT graphics card with the nVidia Linux
> drivers 1.0-9746. My X11 server is version 6.8.2.
>
> Here is a screen image of this phenomenon
>
> http://msg.ucsf.edu:8100/~baucom/images/chimera_image.jpg
>
> I have rotate the model slightly to show that the thin wireframe
> stays behind. It is not a separate object in the model panel.
>
> Thanks
>
> Albion
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