Mesa started to show bogus vertices with the trace http://people.freedesktop.org/~jrfonseca/traces/clearview-5.30b.trace (see attached screenshot). After bisecting 59b01ca252bd6706f08cd80a864819d71dfe741c is the first bad commit: commit 59b01ca252bd6706f08cd80a864819d71dfe741c Author: Fredrik Höglund <fredrik@kde.org> Date: Tue Apr 9 20:54:25 2013 +0200 mesa: Add ARB_vertex_attrib_binding update_array() and update_array_format() are changed to update the new attrib and binding states, and the client arrays become derived state. Reviewed-by: Eric Anholt <eric@anholt.net>
Created attachment 89027 [details] Screenshot at call 20022 Screenshot at call 20022
BTW, this was with llvmpipe. I haven't tested with other Mesa drivers, but given the change is in mesa core, I strongly suspect it would affect all drivers the same.
I now verified that the regression can also be seen with softpipe and the non-gallium swrast.
Created attachment 89044 [details] [review] patch This patch fixes the problem for me, but I'm not sure if it's the right way to fix it. The real problem might be that _ae_invalidate_state() isn't being called somewhere where it should be.
(In reply to comment #4) > This patch fixes the problem for me, but I'm not sure if it's the right way > to fix it. > > The real problem might be that _ae_invalidate_state() isn't being called > somewhere where it should be. Thanks for looking into this. I confess I'm not very familiar with this code myself, so I'm not sure what to make of this... If it fixes the problem, then I'm all for submitting the patch you attached. If you feel that there might be an underlying problem, maybe that situation could be trapped by sprinkling a few more asserts?
Looks OK to me too. Reviewed-by: Brian Paul <brianp@vmware.com>
Pushed the fix now.
Are we sure that this bug is fixed ? because this game "clearview" can not even run with wine, it crash immediately at startup with my radeon HD4650 pcie ( r600 driver, mesa 10.0.1 ) and I notice similarities with bug 72895, it's the same commit ( 59b01ca252bd6706f08cd80a864819d71dfe741c ) who trigger a similar bug ( graphic corruption in flightgear ) : https://bugs.freedesktop.org/show_bug.cgi?id=72895
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