2nd "camera stereo" → glDrawBuffer: invalid operation

[satyshur@…]

The following bug report has been submitted:
Platform:        Linux-3.10.0-1062.1.2.el7.x86_64-x86_64-with-redhat-7.7-Maipo
ChimeraX Version: 0.91 (2019-09-26)
Description
Same problem as with quadro FX4800, This is a P5000 with latest Nvidia driver to do stereo.



Log:
Startup Messages  
---  
warning | could not retrieve bundle list from toolshed  
note | available bundle cache has not been initialized yet  
  
UCSF ChimeraX version: 0.91 (2019-09-26)  
© 2016-2019 Regents of the University of California. All rights reserved.  
How to cite UCSF ChimeraX  

> open 2bbv format mmCIF fromDatabase pdb

2bbv title:  
The refined three-dimensional structure of an insect virus At 2.8 angstroms
resolution [more info...]  
  
Chain information for 2bbv #1  
---  
Chain | Description  
A B C | protein (black beetle virus capsid protein)  
D E F | protein (black beetle virus capsid protein)  
N | RNA (5'-R(*up*CP*up*up*ap*up*ap*up*CP*U)-3')  
  
Non-standard residues in 2bbv #1  
---  
CA — calcium ion  
  
2bbv mmCIF Assemblies  
---  
1| complete icosahedral assembly  
2| icosahedral asymmetric unit  
3| icosahedral pentamer  
4| icosahedral 23 hexamer  
5| icosahedral asymmetric unit, std point frame  
6| crystal asymmetric unit, crystal frame  
  
  

> display stereo

Expected a collection of one of 'atoms', 'bonds', 'cartoons', 'models',
'pbonds', 'pseudobonds', 'ribbons', or 'surfaces' or a keyword  

> camera stereo

> camera mono

> camera stereo

An error occurred in drawing the scene. Redrawing graphics is now stopped to
avoid a continuous stream of error messages. To restart graphics use the
command "graphics restart" after changing the settings that caused the error.  
  
Traceback (most recent call last):  
File "/opt/UCSF/ChimeraX-daily/lib/python3.7/site-
packages/chimerax/core/updateloop.py", line 73, in draw_new_frame  
view.draw(check_for_changes = False)  
File "/opt/UCSF/ChimeraX-daily/lib/python3.7/site-
packages/chimerax/core/graphics/view.py", line 166, in draw  
self._draw_scene(camera, drawings)  
File "/opt/UCSF/ChimeraX-daily/lib/python3.7/site-
packages/chimerax/core/graphics/view.py", line 205, in _draw_scene  
camera.set_render_target(vnum, r)  
File "/opt/UCSF/ChimeraX-daily/lib/python3.7/site-
packages/chimerax/core/graphics/camera.py", line 422, in set_render_target  
render.set_stereo_buffer(view_num)  
File "/opt/UCSF/ChimeraX-daily/lib/python3.7/site-
packages/chimerax/core/graphics/opengl.py", line 1171, in set_stereo_buffer  
GL.glDrawBuffer(b)  
File "src/errorchecker.pyx", line 53, in
OpenGL_accelerate.errorchecker._ErrorChecker.glCheckError  
OpenGL.error.GLError: GLError(  
err = 1282,  
description = b'invalid operation',  
baseOperation = glDrawBuffer,  
cArguments = (GL_BACK_RIGHT,)  
)  
  




OpenGL version: 3.3.0 NVIDIA 430.50
OpenGL renderer: Quadro P5000/PCIe/SSE2
OpenGL vendor: NVIDIA Corporation

[Tom Goddard]

Same bug as #2446 but with Quadro P5000 graphics. Will add a note to #2446 pointing to this case.