woah! Chameleon plugin+vray=BAD ?

[thethule]

Hello everyone.

I was wondering if anyone has used Digimations Chameleon with Vray before. I have and i dont remember it making THIS big an impact on render time. I have a few materials that have a Vraymap with HDRImap reflections in them. That is material 1 of the blend, material 2 is a standars material, 0 opacity. The render time has jumped from about 7 minutes to 2 hours! what the ?£$%$% is going on? Is this a compatability problem with Vray and Cham? Peter or Valdo, do you know anything?


Regards,

Marc

[Greg3D]

We've been using Chameleon with VRay for several months now. It does impact render time a bit, but not as drastically as your times. We've been using chameleon to isolate the VRay displacement within animated gizmo's. Maybe it's a comination of chameleon and the material that has 0 opacity?

[vlado]

Marc, is there any particular reason to use a material with zero opacity?

Best regards,
Vlado

[thethule]

Hi, Greg, thanks for the reply. Sorry for not answering sooner. Vlado, yeah, there is. Here is what i am doing: I am rendring a truck in vray, all lovely, GI etc...But i want half in wireframe and the other half in Vray render (not exactly half, but in blotches, hence the cham gizmos). Since Vray doesnt render wireframe, i am rendring the wireframe in scanline render with the chameleon material as a matte material. Then i go to Vray and render the Vray truck with the inverse chameleon parts as transparent. Then comp together. Basically, i cant make a matte "material" in Vray can i? Only matte objects. So i have to use a transparent material and use the matte/wire render from the scanline. Although i just thought that maybe wiretex material would work since that renders in Vray, but if the Vray/chameleon render still takes so long then.....

Here is an image to show you what i mean.

http://community.webshots.com/album/51425763OqXDpT

[vlado]

First, you have the VRayEdgesTex which will allow to achieve an effect similar to wireframes; second, you have the VRayMtlWrapper material, which allows you to turn any material into a matte material.

Best regards,
Vlado

[thethule]

I see... I did try the Vrayedgetex but that was sooooooo slow, again, i dont know why. And i did not know that that was what Vraymtlwrapper did, i never used it! I guess now i know. Thanks for you answer but i feel like a little kid whos been told off by his parents or his teacher. You had asked me if there was any need for the material with 0 opacity, could that be the reason for the huge increase in rendering time? Is that something to be avoided in the future?

Regards,

Marc

[vlado]

Thanks for you answer but i feel like a little kid whos been told off by his parents or his teacher.

I'm sorry, I didn't really mean it to sound like that

You had asked me if there was any need for the material with 0 opacity, could that be the reason for the huge increase in rendering time? Is that something to be avoided in the future?

In general you should avoid having completely transparent materials as that can slow down VRay considerably in some cases.

Best regards,
Vlado

[R2J2]

avoid having completely transparent materials as that can slow down VRay considerably in some cases.

so don't have the refraction on 255, what cases will it slow down the render? background images?

[thethule]

Vlado, i was only joking mate. I know you didnt mean it that way. Anyway, you have to be tough and strict with us all. Otherwise we would all be making noise, talking too much, askign silly questions etc... just like a school classroom! lol

R2J2, i dont think he means (and i didnt mean) 0 opacity on a Vray material or 255 refraction on a Vraymap, but on a standard material with opacity set to 0.

Marc

[vlado]

R2J2, i dont think he means (and i didnt mean) 0 opacity on a Vray material or 255 refraction on a Vraymap, but on a standard material with opacity set to 0.

Yes, I meant that too

Best regards,
Vlado

[R2J2]

thanks guys, every day getting a bit clearer

[thethule]

Yep! And i learned about the Vraymatlwrapper. Strange how i never tried it before. Thanks for the replies.

Marc