Mental Ray - Shaders

#841

???

#842

Hi all,

It seems that all of the shaders for MR have a scaling issue. The sss and dirtmap shaders for example seem to work alright with the scenes that were supplied with them but if you use the same shader in another scene that isn’t the same scale it doesn’t work properly. I merged two scenes and the scale got changed and my neon shaders went dark…I resized everything and it worked again.
Is there some way to set up a scene so that the objects are properly scaled for MR or do you need to mess around with that everytime you start to apply your materials?

Zom

#843

Enabled caustics doesn’t work, the ground becomes just a bit white but not blue as the object over the ground.

Did you notice that the SSS-shader has somtimes problems with aritfacts? even a sample rate of 128 (samples 1) and 128 (samples 2) won’t give me artifact-free renders :cry:

#844

use a blue light. I think thats what I did on my original SSS glass render. Would have to find the file to confirm though.

#845

i am asking a really stupid question,
mostprobably it has been discussed already, but somebody please answer to this question.

whenever i put a sky light in the scene it becomes black in the rendering, how to use skylight with mental ray, and how to turn on photon in it.

thanks

#846

saiko: You have to turn on final gather.

#847

thanks for the quick reply!

saiko

#848

Originally posted by Texlon
Did you notice that the SSS-shader has somtimes problems with aritfacts? even a sample rate of 128 (samples 1) and 128 (samples 2) won’t give me artifact-free renders :cry:

What about that question? The freaky thing is, only once I got a artifact-free result, without changing anything, but the next render was full of them :eek:

PS: That caustics effect doesn’t look good, I found another way to archive this light scattering effect on the ground by using Final Gather, but this is very slow and isn’t good for animations and that’s what I am going to make…

#849

Hi everyone I have a few shaders that I want to share
but every time I try to attach a file it does not seam to
work my file size is under 20000 and it’s a jpg. Also
how do I post a .mat file could someone plese help.

#850

Just wanted to get some feed back on a few shaders.
This is a velvet shader and a velvet shader with fuzz,
which I hope in the future can be used for peach fuzz on
a persons face. Also I’m playing with the Ward shader and
trying to make anisotropic highlights but can’t get the U and V
sliders to work correctly has anyone been able to get this to
work? The Images of the two shaders is here.

velvet still & velvet still with fuzz

#851

NBF,

You have some pretty good things going on with the velvet shader. I like it. It looks better than my attempts so far. The velvet w/bump seems a bit over lit maybe, but it’s probably fine in a different lighting scheme. Something a little softer. Are you going to upload the shaders as well?

Zom

#852

It’s looking good so far. The black in the middle of the highlights is a bit strong, but it’s a great start!

#853

Hi,

How can i create a glow (arround a face) tht provide light …
I think it s possible with the MR shader…
but i absolutely don’t know the way to do that …

Thanks for answer or links that can be helpfull for me…

#854

Okay here is a max file with both velvet shaders and also
a metal flake paint shader that is all Procedural “for F9”. Also I
uploaded a still of a metal with Anisotropic reflections
that I’m working on if anyone has any good tips please
don’t hold back. Also I still have not been able to grasp
how the U and V highlight setting for the ward shader work
and any input on that would be great. If anyone can improve
on the shaders that I posted please let me know for I think
that they are far from perfect. Thanks for all the feedback.

Keep Maxing

file names are: velvet and paint shaders & Anisotropic metal

http://frodo.hiof.no/~deetee/mrupload/index.php

:thumbsup: :beer:

#855

Could yiou possibly zip them? For some reason when I try to d’ld the max file I keep getting a microsoft word open and it keeps wanting to convert it. Thanks :slight_smile:

#856

Here is something that I was working on for a renderable wire frame setup.

I would like to set it up with SSS, but I ran into some problems. Thought you all would like to look at it, and see what you could come up with.

File:

Render Wire.max

Thanks

#857

“Could yiou possibly zip them? For some reason when I try to d’ld the max file I keep getting a microsoft word open and it keeps wanting to convert it.”

Thank GOD I’m not the only one that this happens to. I don’t know why people post unzipped .max files. They zip down to almost nothing when compressed. And I think it’s safe to say everyone has some form of unzipping utility these days.

Appologies for going OT on this, just frustrated. :smiley:

#858

http://frodo.hiof.no/~deetee/mrupload/index.php

Velvet shader Zipped

#859

Thanks! That worked so much better. :slight_smile:

#860

Hey BigRans123 cool shader I tried to get sss working
with it but in the process the look of the shader kinda
changed I’ll post a still if you like it I’ll post the max
file “ZIPPED of corse”. Thanks

file name: wire with SSS
http://frodo.hiof.no/~deetee/mrupload/index.php