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| Notices |
| Other 3rd Party Renderers Posts about 3rd party plug-in renderers like Brazil r/s, Final Render etc. |
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January 17th, 2006
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#1 (permalink) |
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Junior Member
Join Date: May 2004
Location: Portland, OR
Age: 39
Posts: 2
Name: Daniel Martinek  |
How does mental ray handle heavy geometry scenes ?
Hi Mental Ray gurus,
I am in a process of comparing Vray and Mental Ray renderers and I am trying to find out how good (fast) Mental Ray is in handling and rendering really heavy geometry scenes. In Vray we have been rendering large exterior scenes with 3D high-poly trees in full GI using vray proxies. A typical scene is about 500 trees each about 400,000 polygons which makes a 200 million poly scene. Does Mental Ray have anything comparable to Vray proxies to be able to render such high poly scenes? Is there maybe any other approach in mental Ray to handle such a heavy geometry? Please share your knowledge :-) Thanks |
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January 17th, 2006
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#2 (permalink) |
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Veteran Member
Join Date: Dec 2004
Location: Ft. Lauderdale, FL
Posts: 1,179
Name: william york |
Re: How does mental ray handle heavy geometry scenes ?
Nope, it will crash, vray proxy's are the greatest invention ever, I don't think any other renderer has something similar, that will change I'm sure...
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January 29th, 2006
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#4 (permalink) |
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Moderator
Join Date: Aug 2004
Location: Beantown
Age: 29
Posts: 4,452
Name: Andrew Lynn  |
Re: How does mental ray handle heavy geometry scenes ?
You've got Vray handling 200 million polys? I'm impressed. But maybe there's a better way to handle your trees - 400k is a heck of a lot, unless they're your subject matter and you're doing close-ups of them.
The most complex model I've worked on recently has all of downtown Boston, and that's 429k faces. I know mr has an Instance function but I don't know how/if that works well with Max. And mr's GI calc time is pretty much geometry independent, so if you can get it to load you should be able to render it. |
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February 10th, 2006
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#5 (permalink) |
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Moderator
Join Date: Apr 2002
Location: Lalaland
Posts: 1,166
Name: Christopher Nichols |
Re: How does mental ray handle heavy geometry scenes ?
dude... using instancing I have been able to render a few BILLION polies in Vray using only 256k of ram.
 if you look at the computer and the version of Vray you will see that it was a LONG time ago.
__________________
Christopher P Nichols |
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February 10th, 2006
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#6 (permalink) |
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Veteran Member
Join Date: Dec 2004
Location: Ft. Lauderdale, FL
Posts: 1,179
Name: william york |
Re: How does mental ray handle heavy geometry scenes ?
Ya, I was gonna say thats nothing also (200 million) I've rendered 15,000 high poly trees (200,000 polys each) and my computer didn't even flinch, took like 4 minutes to render with GI, love proxys...to tell the truth I don't know what the actual limit is, I never reached it.
Last edited by manta; February 10th, 2006 at 10:01 PM. |
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February 11th, 2006
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#7 (permalink) |
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Moderator
Join Date: Aug 2004
Location: Beantown
Age: 29
Posts: 4,452
Name: Andrew Lynn |
Re: How does mental ray handle heavy geometry scenes ?
Wow. I had no idea. I'm going to have to try this.
Does it work well with large models (say, a large city) or just with instancing? I've been fighting with a model of downtown Boston for months... |
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February 11th, 2006
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#8 (permalink) |
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Veteran Member
Join Date: Dec 2004
Location: Ft. Lauderdale, FL
Posts: 1,179
Name: william york |
Re: How does mental ray handle heavy geometry scenes ?
yes, you can convert large sections of your city into vray proxy meshes, and then just import them into your scene...
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February 19th, 2006
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#9 (permalink) |
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Senior Member
Join Date: Aug 2003
Location: Calcuta, INDIA
Posts: 216
Name: Pradipta Seth    |
Re: How does mental ray handle heavy geometry scenes ?
It's an very important aspect of vRay rendering. Do you have a proper article on vRay proxy and it's use? I have been looking for it for a long time. would be grateful to you for helping me out
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"There is no possibility of cheating in art. It is either good or bad." --------------------------------------------------- Portfolio 3DAllusions |
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March 5th, 2006
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#10 (permalink) |
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Member
Join Date: Mar 2005
Location: Pensacola FL
Age: 28
Posts: 33
Name: Karl White |
Re: How does mental ray handle heavy geometry scenes ?
Acually Mental Ray will render any size scene without problems when you use large BSP. It renders about 15% slower than regular bsp but it should be able to handle billions of polys without any crashes.
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