misss tests

#481

Any tipps in using misss fast skin in conjunction with Final Gather ?

Yes i checked include indirect lighting in the lighmap sample tab…

But i havent made good results …

#482

Hey, I really hate to divert the topic briefly, but I’m having a big problem with mental ray. I’m following a tutorial, but when I apply the material to my model (simple primitive, for practice), and render in Mental Ray, it will not work. My error is:

// Error: (Mayatomr) : mental ray has stopped with errors, see the log //
// Info (Mayatomr): Aborted //

I don’t know where the log is, and if I did, I’m not sure how I’d fix it from there. I’m dying to try out SSS, so can someone help me?

#483

read the install again, and double check your maya.rayrc

#484

dvd_master,
i had some trouble with mental ray disliking zonealarm (or zonealarm dislikes MR). turning off the firewall helped… :rolleyes:

#485

have a look to texture nodes linked to existent image files.

is image files exists ?
or image formats supports by mentalray that you linked to texture nodes ?

#486

removed…

#487

Hi folks,

I need some advice. I have a head mesh with 2 different uv sets (front and back). Now I want to assing the misss_fast_skin to both uv sets. The problem is how to do this.

First I tried the mix8layer shader and pluged in two misss_fast_skin with the same lightmap. I am also able to blend between the two colormaps of the head using an alpha map. However when rendering MR stops at 55% and does not continue. When using the preview I can see, that both sides look the same (which is want I want), but also MR stops rendering.

The second method I used: I assigned two different miss_fast_skin shader to the uv sets. First problem: How to blend between those two without getting a sharp line between the two colormaps?
Second problem: Both sides of the head render black and I don’t know why. I looked at the shadingGroup and under the tab material there was only one (which is normal) however I assigned two shaders on the object. Could that have to do anything with my problem?

If someone here has already managed using two misss on a single object please help me on my topic. Either post here, since the folks around here could be interested or just PM me.

#488

indy, i must ask why 2 uv sets on a head ? why not just put them both in the same set ?

#489

Why not 2 UV sets? Now I have them and I don’t want to redo them. However when texturing a body you will also need more uv sets.

#490

There’s no reason to use UV sets, mainly because they just plain suck. You can assign shaders to individual faces and just lay out your UV’s for each “group” of faces to the right of the UV space. Just make sure they are in the positive axis and fall within the 0-1 range.

#491

you can have all the uvs u need in one set, and also you are able to transfer uvs between sets on a single object.

#492

Thanks to Floze I found out that I have to use lightlinkingmode 2 to get it work!

#493

Okay, maybe I’m just a total idiot or something but I STILL have no clue how you guys are getting these things to render or even work, for that matter. I thought I’d installed everything correctly but I can’t even get MR to even work with these shaders. I get an error saying something about “Pruning Invisible Obljects” when I use Maya’s renderer and when I use MR I get this ---->

// Info (Mayatomr): Aborted //

WTF?! I’m so ready to give up on this SSS nonsense. Someone talk some sense into me before I totally lose my mind and decide to start learning 3DSMax or worse… Blender! :slight_smile: I’ve already tried the tuts here and here and neither have helped. I’ve gotten into SubScatter by Mark Davies and it only goes so far (sorry Mark). Diffusion isn’t working right and honestly, I don’t know what to do. Please help me, you guys are my only hope. :slight_smile: Thanks in advance.

Russell Bolding
http://www.russelltopia.com

#494

This looks like an installation or scene set up problem.

What platform are you on? OS? Maya version 6 or 6.5?

Did you check the texture filename paths? It’s possible you may have to relink them.

Do you know about the Translation tab in mental ray Render Globals where you can increase the information reported?

#495

have u even tried the test scene u can download at www.lamrug.org ?

#496

This error has been killing me for days, and I can’t figure it out. Anyone run into this? Anyone know what this means, what causes it, and how to correct the problem?

Thanks in advance;

-DETOX

#497

BGA, I’m running 6.0 on a homebuilt PC - Windows XP Pro. First off where do I go to see my texture filename path? Probably sounds like a stupid question but I have to ask. :slight_smile: I’m see the Translation tab but never really gave it much thought. I’ve tried to make sure I installed the shaders right and I think I have but not sure. Is there a test to make sure they’re installed correctly? You mentioned scene set up. What do I need to look for with this? Thanks for your time and help.

Russell

#498

Russell,

I’m assuming you’re trying to use the LAmrUG sss mb scene that goes with the tutorial.

When you load a scene using mr for the first time, into a fresh Maya, you can look for possible shader library load errors. If there’s no notice and you see sss shaders in the Maya GUI, they are probably installed correctly.

Next, when I say scene setup, I mean that you placed the scene and images in some normal directories, and then checked to make sure the links to the images in the scene were working. For example, find a texture node, named something like mentalrayTexture1, and make sure the file pathname goes to the place you installed the texture file.

When this is all working, I also highly recommend the mel script on LAmrUG which makes it easier to automatically hook up sss to lightmaps, etc.

#499

BGAW, thanks for getting back with me. I actually finally got at least one of those shaders to work - the fast simple one. But I try to get the skin one to work and just after I assign the mentalraytexture node to the lightmap in the Lightmap Write slot, Maya totally crashes on me. Any ideas why? I’m including the render I managed to pull out of my butt last night. At least it’s a start. Thanks for your time and help. :slight_smile:

Russell

#500

sorry to pick this up again with my lousy post but here is my 20 minutes with sss shader wich comes with 6.5. Basicly only Changes what I have made to sss simple shader is that I hava changed specular atributes. there is two Lights in the scene and With enviroment color I have also lighted it a bit With Final Gathering! (this is old model of mine)