vray fur and speeed!

[super gnu]

using the lovely vray fur to do thatched roofing, but am getting horrible rendertimes.. its odd because it will start the irradiance calc (fur turned to recieve but not generate gi) but as soon as it hits geometry (even an untextured box, not just the fur) it will sit there for five - 10 mins, do a couple more buckets, then speed up again for a while, before stopping again later in the image and waiting for another few mins..

The actual render isnt too slow, but at the moment im having to use very large hairs, (2 m long and 10 cm wide) since turning the "per area" setting higher just makes these pauses even more extreme. Is there any way to speed things up, coz id ideally like to quadruple the density to get a nice result, but going from 9 per area to 10 almost doubles the rendertime. its only using 250 meg of ram to render, and the cpu is at 100% throughout.

i would just accept that thats how long it takes, but the number of hairs im using wouldnt cover a convincing teddy bear, so im assuming there may be something wrong...

ive tried with the 1.47 build and the newer 1.49.06 beta...

gonna try excluding from gi and lighting with omnis, but if anyone else has any speedup tips..?

[/img]

[Da_elf]

1.49.06? really?

[super gnu]

typo! 1.49.60 actually. were doing some maxscript developement with it.

[sv]

make sure that if your source object which the fur is applied to has enough sub divisions - (length x width segments)

I had this problem - very slow rendering times: I had a simple plane with 1x1 subs.(i.e. length and width segments.) I contacted Chaos Group, and Candelero sent me back a scene where all the changes were to use a plane of about 15x15 subs, and the rendering speeded up from very very slow, to very very quick.

And i was using per area.

[super gnu]

ooo! good tip... i shall give it a go.

to be honest the polies arent too big, but sounds promising...ta!

[super gnu]

ha! no more pauses! thanks a ton sv.

[m_hinks]

Im wanting to use vrayFur for grass and need a lot of fur objects. Is this a correct way to work, subdividing the source object?

Im getting long pauses too and am using an extruded spline shape.

Im also thinking it might be quicker to use pflow or something to scatter a patch of grass blades and tile them using vray proxy as someone else pointed out.

Any info would be v usfull.

Thanks