View Full Version : crossfading different bumpmaps on same shader
07-04-2004, 04:05 PM
How to animate a series of image files (in this case bump maps) fading in and out (cross-fading, mixing etc) on the same shader the easiest way? Years ago I remember a script on Highend3d that could do it but I forgot the name... one way to do it is to make one shader for each bump map, then animate transparency (and spec), but there should be a cleaner way... maybe Blender nodes, or Multiply Divide?
07-04-2004, 05:45 PM
Hmm, cascading bump map nodes (you know, connect one's output to other one's normal camera) and then animating bump depths maybe?
07-04-2004, 06:14 PM
I didnt try it yet but the guy in the bottom of this thread is talking about layring bump map using MR :
I know you're not a big fan of MR but this is what I've found :rolleyes:
07-04-2004, 06:28 PM
Hello there !
are you using maya sotware render or mental ray?
(I`m thinking...) you can multiply your bump textures (or add them)
with a ramp,and pipe that to series of blend nodes, pipe the last blend node
to a luminance node then to a bump node.
In case you use an additive node,you need to use a set range utility.
In case of mental ray, francesca has made a nice bump node (bump combiner).
You can find it in highend3d shader section.
There might be an easier way (like what augustus suggested),
but i cant think of anything else right now.
(Hope I helped a bit)
(Gotta hurry up.
Big game starts in 2 hours and i have invited a bunch of people
Yes i`m exited to see my team in finals :) )
07-04-2004, 09:48 PM
I have a simple tut on this on my website. Its real easy. This may not be what u r talking about though.
07-05-2004, 03:57 AM
(I'll be using MR, I've grown to prefer it now.)
Three different methods already, that's why I love this place, thanks! :)
But even though the one on JS' site says 'or download here for Mental Ray in Maya' when I open the Readme it seems to be an XSI shader?
I noticed Francesca's shader at Highend yesterday, but I didn't think it was exactly what I looked for... now I'll try it. And that tutorial seems to be useful, will try that too.
07-27-2004, 10:21 AM
bump combiner all the way..
01-18-2006, 04:00 PM
This thread has been automatically closed as it remained inactive for 12 months. If you wish to continue the discussion, please create a new thread in the appropriate forum.
vBulletin v3.0.5, Copyright ©2000-2013, Jelsoft Enterprises Ltd.