2.46 RC5 and very slow rendering

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mallow
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2.46 RC5 and very slow rendering

Post by mallow » Wed May 14, 2008 2:24 pm

Hi. Maybe you already know that and someone is trying to fix this, but I`ve compared lately rendering times on Blender 2.45 and Blender 2.46 RC5 and... Blender 2.46 RC5 is up to 5 times slower.

jesterKing
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Post by jesterKing » Wed May 14, 2008 4:29 pm

There have been changes in the renderer that made the calculations more complex, hence increased render-times.

/Nathan

mallow
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Post by mallow » Thu May 15, 2008 1:59 pm

jesterKing wrote:...hence increased render-times.
/Nathan
But up to 5 times? :( Could you give me some details, please? I`m working on an animation and this slower rendering is a pain. I want to keep blender up to date and use new stuff, but without losing time on slower rendering. Maybe you know what part, what change to rendering process makes it slower and I could find than a solution somehow to make it go a little faster. You know, like using diferent lighting or something.

pildanovak
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Post by pildanovak » Thu May 15, 2008 6:45 pm

It depends maybe on which type of lamp you use? with raytraced lamps, see if samples is set to 1- that should perform like original. The same is for raytraced materials.

mallow
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Post by mallow » Thu May 15, 2008 7:58 pm

Correct, rendering in Blender 2.46 RC5 is up to 10 times slower.
pildanovak wrote:It depends maybe on which type of lamp you use? with raytraced lamps, see if samples is set to 1- that should perform like original. The same is for raytraced materials.
Thanks for answer. In fact, samples was already set to 1 and Threshold to 0.000. But, with Threshold set to 1 it`s a little faster.
Same scene rendered with Blender 2.45 and 2.46 took such time:
00:01.40 with Blender 2.45
00:10.60 with Blender 2.46 and default lamp Samples: 1 and Threshold: 0.000
00:04.48 with Blender 2.46 and lamp`s Threshold set to 1

So, we`re getting to something, but it`s still slower.
@Pildanovak: If you have more ideas, I`m all ears.

LetterRip
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Post by LetterRip » Sat May 17, 2008 12:29 am

File a bug report with a file that shows the problem,

LetterRip

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