[PyMOL] Shader issues and automatic disabling (was Re: I just built pymol, comes up but hangs on any attempt...)

[Ben E. <be...@hk...>]

Hi Jason,

> If your machine does have shader issues and they don't automatically
> disable, please let us know.

What would be the symptoms/output if this is happening?

I get occasional reports from our users with errors like this:

  CShaderPrg_New-Error: vertex shader compilation failed name='default'; log follows.
infoLog=cI
  PyMOLShader_NewFromFile-Warning: default shader files not found, loading from memory.
  CShaderPrg_Link-Error: Shader program failed to link name='default'; GL_MAX_VARYING_FLOATS=124 log follows.
$^?
  CShaderPrg_New-Error: vertex shader compilation failed name='volume'; log follows.

They seem to be informational, since PyMOL seeems to run reasonably well even 
after outputting those messages, but I can't say for sure.

The graphics start up message on the machine looks pretty normal to me:

  Detected GLSL version 1.20.
  OpenGL graphics engine:
   GL_VENDOR: NVIDIA Corporation
   GL_RENDERER: Quadro 4000/PCIe/SSE2
   GL_VERSION: 2.1.2 NVIDIA 304.37
  Adapting to Quadro hardware.
  Detected 24 CPU cores.  Enabled multithreaded rendering.

-ben

--
| Ben Eisenbraun
| SBGrid Consortium                          | http://sbgrid.org       |
| Harvard Medical School                     | http://hms.harvard.edu  |