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Clay rendering button
Posted: Fri Oct 07, 2011 4:28 pm
by telemmaite
I dont get it when i press the Clay-mode it works as intended but the speed of my render is halved ? I think it should be exactly the opposite way? There is noway that an object with specular+diffuse+bumps renders 2 times faster than a white no-specular material..
Re: Clay rendering button
Posted: Wed Oct 12, 2011 2:53 am
by PhilBo
Can you confirm with different scenes? I get an almost 2X increase when going to clay mode.
Re: Clay rendering button
Posted: Wed Oct 12, 2011 5:55 am
by telemmaite
I will try it out. It happens with PMC.
Re: Clay rendering button
Posted: Thu Oct 13, 2011 12:29 am
by roeland
The reflection value of the clay is quite high, probably higher than the materials in the scene, and russian roulette by default (if rrprob is set to 0.0) continues a ray with a probability proportional to the reflection value. So in clay mode the paths traced may be longer on average, causing the renderer to slow down.
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Roeland