View Full Version : Using multiple normal maps?

09-27-2006, 07:11 AM
i hit a problem here when i wanted to use multiple tangent normal maps under node editor. One normal map works just fine but Lightwave does not let me connect 2 normal maps to shader`s normal map slot. And i do know now how to mix 2 normal maps without messing up normals.

Can anyone help me out with this please?


09-27-2006, 07:25 AM
Try adding them together using a Vector Add node, and then Vector Scale the output by 50%, and plug that into the Normal input. Just a guess...

09-27-2006, 08:33 AM
Hey James
thank you for your help. It looks like your solution works better than mine. e. Thou this brings couple other questions

- if i use 4 slot "add" i need to scale by %25 right?
-what if i want to use lets say 6 or 8 normal maps, is it possible?

09-27-2006, 09:02 AM
Yes, Add4 will need to scale back by 25%.

You need to take the average of all the normals at each point, so just add them all together, using 4 slot "add" nodes, which you can add together using more vector add nodes, and divide the end result by the number of maps you're using.

09-27-2006, 09:17 AM
Thank you james, that was very helpful.