Fix #120007: Crash rendering when using OptiX and Grease Pencil on recent drivers #120026

Sergey Sharybin · 2024-03-28T17:50:30+01:00

Sergey Sharybin commented

2024-03-28 17:50:30 +01:00

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.

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.

Sergey Sharybin added 1 commit 2024-03-28 17:50:40 +01:00

0bf8c08758 Fix #120007 : Crash rendering when using OptiX and Grease Pencil on recent drivers

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.

Sergey Sharybin requested review from Brecht Van Lommel 2024-03-28 17:50:51 +01:00

Brecht Van Lommel approved these changes 2024-03-28 17:57:55 +01:00

Brecht Van Lommel merged commit 598819049e into main

2024-03-28 18:00:41 +01:00

Brecht Van Lommel deleted branch fix_120007

2024-03-28 18:00:43 +01:00

Brecht Van Lommel referenced this issue from a commit

2024-03-28 18:00:45 +01:00

Fix #120007: Crash rendering when using OptiX and Grease Pencil on recent drivers

Thomas Dinges referenced this issue from a commit

2024-04-04 17:40:24 +02:00

Fix #120007: Crash rendering when using OptiX and Grease Pencil on recent drivers