vray optimization...?

[Giovanni]

Hello all,
I am rendering a very simple interior scene, very schematic.
Max 6, Vray 1.9.2.1 (from explorer info)

No reflections and only basic transparency. No GI, only first bounce irradiance map, standard settings to "low".

There is a sun light, and 24 spotlights.

Even at only 1300 by 900 pixel, the scene takes 20 minutes to render on a dual Xeon 3.4 Ghz, 800 FBS 2gig ram HT.

I am wondering if there is a way to optimize the scene.

Specifically: I am using "billboards" for some trees (yes, indoor) and vray seems to choke when rendering them.

However, I do not need refraction or other phisically accurate material characteristics, so I did *not* use a vray material.
Do you think would that make a difference?

And how do you use a vray material for just clipping out a tree mapped on a plane?

thank you

regards,

giovanni

[travistlo]

There is a sun light, and 24 spotlights.

Are these Photometric? The photometric lights take longer than standard lights. You may also be able to remove some of these lights if you use other methods of lighting. I dont know your scene, so we cannot point you into a specific direction.

I have seen people remove the spots and use one large vray light comming from the ceiling. The physical spot lights has a self illuminated material to make the light fixture look ilumminated.

Also, what are your settings for the rendering, post those, and people can tell you if you are doing something that can be changed.

However, I do not need refraction or other phisically accurate material characteristics, so I did *not* use a vray material.
Do you think would that make a difference?

I think the vray material are faster, but i never did a test. If you can you should use vray materials.

[ene.xis]

u should use Vray material wraper, or use the refract slot as ur standard alpha slot.

[lordshaitan]

Strangly with a scene i tested the "no bounce" rr map, i found that it was actually a little faster with a bounce. Then again it may be different for your scene.

[percydaman]

sometimes it makes no sense when it comes to render times.



was never able to figure out why the above time disparity happened. the image on the right even had glossy materials I think.

[Giovanni]

thank you all,
I tried to "convert scene" to vray, but that did not work. All transparencies were gone.

I am still not sure how to do simple transparency clipping with a Vray material.

VrayMatWrapper does not have any setting for transparency, and when I used it on top of my regular material the render times were the same.

I will investigate further...

thank you again

regards,

Gio