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Access violation

Posted: Mon Jan 13, 2020 11:15 am
by lacilaci
when using emission node and at the same time pgi first it will work, but changing emission node from auto DLS to enabled or disabled will trigger blender crash.

from console:
em_pgi.jpg

Re: Access violation

Posted: Mon Jan 13, 2020 11:58 am
by B.Y.O.B.
I can not reproduce this on Windows 10 with neither Path CPU nor Path OCL engines.

Can you provide a testscene?

Re: Access violation

Posted: Mon Jan 13, 2020 12:29 pm
by lacilaci
B.Y.O.B. wrote:
Mon Jan 13, 2020 11:58 am
I can not reproduce this on Windows 10 with neither Path CPU nor Path OCL engines.

Can you provide a testscene?
well... can't replicate it in new scene and when I strip down main scene where it happens then it works... So far I only know that it's triggered when enabling emission on material with pgi on... shit.

Re: Access violation

Posted: Mon Jan 13, 2020 12:54 pm
by Dade
Is it the only light emitter in the scene ?

Re: Access violation

Posted: Mon Jan 13, 2020 12:58 pm
by Dade
To further elaborate: PhotonGI does light tracing so there is no direct light sampling at all and DLS flag should have no direct impact at all on the PhotonGI pre-processing step. So the problem is a bit strange.

Re: Access violation

Posted: Mon Jan 13, 2020 1:05 pm
by lacilaci
Dade wrote:
Mon Jan 13, 2020 12:58 pm
To further elaborate: PhotonGI does light tracing so there is no direct light sampling at all and DLS flag should have no direct impact at all on the PhotonGI pre-processing step. So the problem is a bit strange.
there is bunch of lightsources. I don't need the emitter so I can work around it, but wanted few objects to look as if they're lightsources... it's all good unless I also enable photongi. So far I tried to see if the problem is instances, multimaterial, other materials or cache persistence file. Everything works in isolated scene...

I'm busy and I can work around the issue for now, maybe I'll get back to this later when I have more time or if it would happen in a simpler scene.