Some time ago (link):
What about measured BRDFs? Is it still planned?
Here is nice database of measured BRDFs: link
____________________
sorry for my English
Humh speaking of brdf’s… any1 know the one for car paint ? ^^
Actually nvm just realizes vray doesn’t have brdf settings like mental or I’m blind so /pass/wishlist…
VRay 2.0 Has a special shader for Car Paint
VRayMaterial does have BRDF settings (in the BRDF rollout heh)
V-Ray has always used physically plausible BRDFs for its materials…
Best regards,
Vlado
Humh…
Vraypaint 2.0 pretty much… ee I hate it
About BDRF it only has ward/phong/blind shaders, I was wondering more about diagram that mental ray got, not that I need it crucially but it would be fun to experiment with…
Are there any particular reasons? What would make it better?
About BDRF it only has ward/phong/blind shaders, I was wondering more about diagram that mental ray got, not that I need it crucially but it would be fun to experiment with…Actually we have a material that allows you define arbitrary BRDFs, although it is not too user friendly. It needs actual measured data, although I guess you can paint some yourself. Will see if I can put it online along with some examples…
Best regards,
Vlado
Luke 11,33
“No one, after lighting a lamp, puts it away in a cellar nor under a basket, but on the lampstand, so that those who enter may see the light”
Huhuhuh I think simply what I ask for ages ago, 2x specular control 2x reflection control… the ‘‘speckle’’ looks quite weird at 10k renders+… so have no use for it now, will play with it again once I have force, maybe its just me that cant use it… For now I’m stuck to blends…
about the paint shader university of science 2(if I’m not wrong) was working on an car pain material for some year now… at 1Q 2011 they told me they will release material to public use for max@mental@vray so finger cross…
Link
http://www.gero-mueller.de/2007/12/photo-realistic-rendering-of-metallic.html
Hey,
Any updates on this?
Many Thanks,
UP
I’m in need to have a BDRF control like mental ray gives, 90degree, 20 degree and curve. I got some custom BDRF’s to create and as far as it goes I cant do it in vray for the moment.
Any news on getting BDRF for vray please?
Thanks, bye.
Out of interest, what kind of material are you unable to create with current Vray material?
I got a scan of a carpaint - I can recreate it mental ray - more or less, but unless I can access BDRF I cant get it to look alike.
that will be very useful for me, as well
There is a Vray Miafalloff script somewhere that adds a map that emulates mentalray falloff curves. Just can’t find the link for it, but it should be somewhere, either in this forum or on Chaosgroups page.
I’m sure Vlado can provide a link.
This is not BRDF control; it simply controls the reflection strength. As such, using a Falloff map in Fresnel mode will get you quite close.
Also, you can look here: http://www.chaosgroup.com/forums/vbulletin/showthread.php?64888-BRDF-algorithm-like-in-mental-rays-mia\_material&p=527163#post527163
Best regards,
Vlado
Heya
Yes I did think of Falloff but in mental ray I ended up changing values of 0.001 to 0.005 and so on, I would not be able to get such accuracy in falloff - or it would be quite hard uh… I do it simply by eye, I have my scan render and I just tune up settings.
I did try arch&design but I cant remember if It worked, I think some features didnt work so I ended up not using it with vray…
Will try the miafalloff in a min see if I can replicate mental ray look.
Thanks, bye.
Can you post a shot of this material you are trying to reproduce?
Sory, its CAD data from client so I cant post it 
Your reference image is CAD data? Anyway, I felt that Vray was able to reproduce pretty good carpaint, effects although I branched away from the actual carpaint shader too, so I was just curious. No worries.