|09 September 2012||#1|
Join Date: Sep 2012
Render time exploded
I have made a fairly basic scene, only 10k poly and everything was nice and fast. I was rendering in 720p with textures and light in about 15 seconds per frame. Then i don't know what happened and my render time jumped to 2-3 minutes without adding anything new. I went and checked to see if i duplicated a light or something(i am using physical sun and sky) but that was not the case.
Is there any method to find out what is taking up my render time?
-using mental ray
-i7 quad core 3.4ghz with hyper-threading
-max sample level is on 0
|09 September 2012||#2|
Join Date: Mar 2011
It's pretty much impossible to just guess, but...
Things that generally increase render time drastically:
Soft shadows - (raytracing more samples = nicer look = longer render)
Blurry reflections - ^
Blurry refractions - ^
SSS (depending on settings)
Anti Aliasing settings (you said your max samples were at 0 so this shouldn't be the case but double check)
|10 October 2012||#4|
Join Date: May 2010
I cannot troubleshoot your scene right now, but when I have this problem I sometimes
select the objects I want to render (including lights/cameras),
export them as a .mb,
create a new scene
import the .mb
You'll have to remove the namespaces but it can really help when a scene gets bugs
That being said, a + 2 min in a scene is not uncommon... But you're right that it's a good idea to know why.
Last edited by RickToxik : 10 October 2012 at 01:13 AM.
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