Stjarna Posted December 22, 2020 Share Posted December 22, 2020 Hello everyone ! I hope this is the right place to ask, if not, sorry ! I've been using houdini for a few years now, but mostly for FX and I am not familiar with shaders at all. I've been looking for an answer everywhere for days, but I think I definitely need to ask here, I'd like to create a "simple" (nothing is "simple" in houdini haha) fresnel / edge falloff shader, like the picture below. I've found this thread https://forums.odforce.net/topic/15808-fresnel-refrlection/ with cool answers from Jeff, but first, i'm quite lost in those material vops, as I'm not used to those nodes at all, and second, this is reflecting light, which I do not want, and I've tried to tweak those a bit to remove this but clearly i don't understand how it works, and can't get what I want. My wish is very basic (at least to me) a simple black color with colored (emitting maybe?) fallof edges like this, but thinner, so like having a ramp to control fallof i suppose : If i could get any help that would be so much, much appreciated, thanks a lot ! and happy holidays Quote Link to comment Share on other sites More sharing options...
Librarian Posted December 22, 2020 Share Posted December 22, 2020 @Stjarna Have Fun 1 Quote Link to comment Share on other sites More sharing options...
Stjarna Posted December 23, 2020 Author Share Posted December 23, 2020 that works almost perfectly, thank you very much for that quick and efficient answer ! (and i feel dumb because it's really just 3 nodes, but well I didn't know them ^^') I'd also look for controlling the "thickness" of the falloff outline, but the edge falloff controller on the node mostly darkens the effect when you lower it. i'm not sure how to explain this properly, i mean right now the falloff effect is a bit "blurry" and I'd like to control it for making it sharper ? so it's get more cartoon-ish ? If you see what I mean Anyway, thanks again for your help ! Quote Link to comment Share on other sites More sharing options...
Librarian Posted December 23, 2020 Share Posted December 23, 2020 Now you have 3 Solutions Have Fun-----> in that 1 you have in Color mix that You can Use Clamp Btw Plus here more Fun Quote Link to comment Share on other sites More sharing options...
Stjarna Posted January 5, 2021 Author Share Posted January 5, 2021 Oh, sorry I didn't see the answer ! thank you very much for those (and the more fun page is neat too ! ) Quote Link to comment Share on other sites More sharing options...
Librarian Posted January 5, 2021 Share Posted January 5, 2021 You're Welcome @Stjarna Quote Link to comment Share on other sites More sharing options...
JasonA Posted August 1, 2021 Share Posted August 1, 2021 On 12/22/2020 at 11:05 AM, Librarian said: @Stjarna Have Fun Sorry for resurrecting this old thread but... Would it be possible to have a ramp drive the falloff instead of the edgefalloff node (which has a float input)? So that way I could customize how I want he falloff to be portrayed? for example, say have a gradient thats black at the facing angle, white at the 45 degree angle, and black again at the perpendicular angle? I too am used to doing this in Maya with a ramp and a sampler info node - the ramp gives a lot of flexibility. Quote Link to comment Share on other sites More sharing options...
Librarian Posted August 21, 2021 Share Posted August 21, 2021 @JasonA I have this Old file maybe it Helps ! SH8.hiplc Quote Link to comment Share on other sites More sharing options...
JasonA Posted August 21, 2021 Share Posted August 21, 2021 Librarian, wow thank you!! this is like a fresnel shader on steroids exactly what I had hoped for, and more. Hats off sir! Quote Link to comment Share on other sites More sharing options...
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