Re: linux-c7 and opengl apps?
Greg V <[email protected]>
| Newsgroups | gmane.os.freebsd.current,gmane.os.freebsd.devel.x11 |
|---|---|
| Message-ID | <[email protected]> |
On Fri, Oct 5, 2018 at 11:21 PM, Theron <[email protected]> wrote: > % /compat/linux/opt/VirtualGL/bin/glxinfo | grep OpenGL > libGL error: MESA-LOADER: failed to retrieve device information Do you have linsysfs mounted? Try reading /compat/linux/sys/class/drm/card0/device/uevent. Mesa won't retrieve device information without linsysfs. I wrote the linsysfs patch that exposed the info there so that recent Mesa would work :) https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=222375 (Wow, that was a year ago… interesting note from there: you might need to set LIBGL_DRI3_DISABLE=1 for Linux apps) Also, what's with the "/opt/VirtualGL"? Are you using mesa from linux-c7 or something… weird? > This problem has existed forever. I am not sure it is actually a > fault in Linux emulation, as these very same symptoms ("failed to > retrieve device information" message, console freeze) existed back in > FreeBSDDesktop/freebsd-base-graphics days when attempting to run > purely FreeBSD OpenGL apps. At the time the workaround was a patch > to Mesa's GPU detection; the underlying kernel problem wasn't > addressed. There was a somewhat related issue (but not the same one, FreeBSD and Linux versions of mesa/libdrm use different mechanisms to get device info). Mostly affected Wayland-EGL clients — they would try to access /dev/dri/card408 instead of /dev/dri/card0, fail to get info and fall back to software rendering. I fixed it a while ago: https://gitlab.freedesktop.org/mesa/mesa/commit/db8519a369261cdedda50852facc45616d4eba28 But I never saw console freezes when Mesa couldn't properly detect the GPU o_0 _______________________________________________ [email protected] mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "[email protected]"