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yt-project / yt_idv

Interactive volume rendering for yt
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add installation note for wayland protocol #82

Closed chrishavlin closed 1 year ago

chrishavlin commented 1 year ago

Stop-gap fix for #81

matthewturk commented 1 year ago

Quick thought -- could we stick a try/except to and output a pointer to these docs if it crashes? Or is the crash too broad?

chrishavlin commented 1 year ago

oh that's a nice thought! It should be possible. The error is pretty general (OpenGL.error.Error), but maybe I could filter for the error message too ("Attempt to retrieve context when no valid context")? Lemme try...

chrishavlin commented 1 year ago

hey that works pretty nicely. never had reason to use the raise Exception(...) from ... syntax before :)

Lemme know if you want to modify the message, but right now the end of the stack trace will be:

 in getContext
    raise error.Error(
OpenGL.error.Error: Attempt to retrieve context when no valid context

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/home/chavlin/src/yt_general/yt_idv/examples/amr_volume_rendering.py", line 7, in <module>
    rc = yt_idv.render_context(height=800, width=800, gui=True)
  File "/home/chavlin/src/yt_general/yt_idv/yt_idv/rendering_contexts/__init__.py", line 33, in render_context
    raise Exception(extramsg) from oee 
Exception: It looks like you have encountered an OpenGL context error while trying to start the GUI. If you are running headless, 
try specifying 'osmesa' or 'egl' with the engine argument. If you are running a newer Ubuntu (21+) or Fedora (34+) release, you 
may need to enforce Xorg usage in PyOpenGL: see https://yt-idv.readthedocs.io/en/latest/installation.html#extra-steps-for-linux