Hi Stephan Lloyd Watkins,

> I am no longer able to use the rendering plugin , which is a vlauble asset as 
> I am at this moment in the midst of making some publication quality figures.

Which rendering plugin are you referring to? What type of computer are
you using?


> Additional, the standard ray trace option will only work if I use a white 
> background, and zoom out further than would make a good image, ie a 300 amino 
> protein about 1 inch square on an 8x8 inch window (visual field).

How are you ray tracing? Using the 'ray' command? Clicking the 'ray'
button? What happens if you do not use a white background? These bugs
sound like they're related to the plugin, not PyMOL itself. Can you
share your PyMOL session file with me?


> As it is both the rendering types, I assume it is some change to memory 
> utilized by the shaders, as it crashes everytime.  I have a similar problem 
> now with gimp as well, however the memory cap is easy to see and maxes out 
> around 3-4 G before crashing, however there is a 16 G memory, along with 4G 
> on the GPU so I do not know where the errors come from.  I do not get the 
> errors on VMD, however prefer Pymol for the ease of use and also the images 
> are nice.

If you have Intel-based hardware you might try the following settings
upon startup:

set use_shaders, 0
set sphere_mode, 0

and then try your rendering plugin.

Cheers,

-- Jason

--
Jason Vertrees, PhD
Director of Core Modeling Product Management
Schrödinger, Inc.

(e) jason.vertr...@schrodinger.com
(o) +1 (603) 374-7120

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