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Mateuet
Licensed Customer
Posts: 130
Joined: Wed May 12, 2010 6:12 am

Trying to get a render right with 2.3

I get way too much fireflies with pathtracing and HDRI is this normal?

Somebody got tricks?
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ronen beke.png
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[gk]
Licensed Customer
Posts: 574
Joined: Sat Jan 16, 2010 12:48 pm
Location: Denmark

It is normal. Down the road there will be a fix for it automaticly.

For now use this - http://www.refractivesoftware.com/forum ... 075#p25075
Amiga 1000 with 2mb memory card
colin
Licensed Customer
Posts: 77
Joined: Mon Aug 02, 2010 7:38 am
Location: switzerland

plus - it seems to depend heavily on the hdri and specular materials used.
can't be more specific though as i'm tweaking myself atm...

colin
Windows7, QuadCore, 8GB RAM, GeForce 480, Cinema4D R12
Mateuet
Licensed Customer
Posts: 130
Joined: Wed May 12, 2010 6:12 am

Yes indeed, for the moment i haven't managed to get a clean render with pathtracing HDRI and bump/specular maps.

Defly is good but not enough for me.

Directlight seems to work... with bump and specular. Not with HDRI though, either way not with all textures.

I've seen some pretty clean renders around i don't think I get it. Which is the best version to render? is there a difference between them?
Antec 300 Casing/Windows 7 ultimate 64/i7 920/ ASUS p6T/ 6GB RAM/ Sparkle GTX470 1.2GB & Asus GeForce 8800GTs 512mb
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radiance
Posts: 7633
Joined: Wed Oct 21, 2009 2:33 pm

you probably have the bump map power on the gray concrete pieces (which are full of fireflies) way too high.
use a low value like 0.1 or 0.2 max and you'll have MUCH less fireflies.

Radiance
Win 7 x64 & ubuntu | 2x GTX480 | Quad 2.66GHz | 8GB
Mateuet
Licensed Customer
Posts: 130
Joined: Wed May 12, 2010 6:12 am

Does it help to use the super sampling trick?
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radiance
Posts: 7633
Joined: Wed Oct 21, 2009 2:33 pm

Mateuet wrote:Does it help to use the super sampling trick?
yeah it does, but those fireflies are you to the bump power being way too high.

Radiance
Win 7 x64 & ubuntu | 2x GTX480 | Quad 2.66GHz | 8GB
Daniel
Licensed Customer
Posts: 412
Joined: Wed Aug 11, 2010 9:52 am

Aside from the fireflies, the water has no IOR.
Core i7 950 @3.07GHz | GTX 460 2GB | 12GB RAM | Window 7 x64
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Phr0stByte
Licensed Customer
Posts: 141
Joined: Tue Jan 12, 2010 12:44 pm

So, does the 2.3 have better anti-alias filtering? Rendering at 2-3x your intended size is OK for some, but I am required to make large res renders to begin with and 2-3x my intended size will kill Octane and my system. Anyone?
Ubuntu Linux 10.10 (Maverick Meerkat) x64 | Geforce GTX285 (Zotac) | x2 Xeon Quads 2.66GHz | 8GB RAM
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Mateuet
Licensed Customer
Posts: 130
Joined: Wed May 12, 2010 6:12 am

Ok, much less bump, IOR and supersampling. It worked.

I didn't manage to get more illumination without burning the HDRI plate neither in Octane or in PS. I suppose they are pretty accurate.

Need more hi-quality HDRI!! hahah

I like the results. thank you all for the tips! :D
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ronen beke  supersampling PS colors final image.png
Antec 300 Casing/Windows 7 ultimate 64/i7 920/ ASUS p6T/ 6GB RAM/ Sparkle GTX470 1.2GB & Asus GeForce 8800GTs 512mb
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