Sergey Sharybin
6b9655eba9
The issue seems to be caused with the recent NVidia drivers, which will crash if OptiX context is created prior to the OpenGL context on Linux. This happens with drivers 545.29.06, 550.54.14, 550.67 and kernel 6.8 on Ubuntu 24.04, and also happens with NVidia driver 550.67 on Gentoo. While it does seem the issue is likely on the driver side, the timeline for it being resolved there is unknown. Until then it is possible to apply workaround on Blender side, which will initialize GPU context prior to rendering with an external render engine when it is known the GPU context will be needed later on. Note this is not a complex fix, because in general it's still possible to render a frame without and then with grease pencil, in which case OptiX will still be initialized first. But we don't want to always initialize OpenGL, and we can't predict future operations. Pull Request: https://projects.blender.org/blender/blender/pulls/120026
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