[Nouveau] [Bug 25806] NV40 vertex corruption (kernel BO deletion too early?)

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=25806





--- Comment #1 from Luca Barbieri <luca.barbieri at gmail.com>  2009-12-27 14:13:14 PST ---
Upon further examination, the kernel does seem to have the required logic:
sending a pushbuffer creates a fence, which is put in bo->sync_obj, which is
then checked on deletion and if non-null, the buffer is put on a delayed
destroy list.

However, it seems to be somehow not working.

Maybe fencing is broken on my card? (i.e. the kernel thinks fences are signaled
when they aren't)
Or possibly fences are being signaled before the vertex shader is finished
running?

How can I test that fencing is working correctly?


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