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Blending normal maps- your thoughts?
Hey guys! Wondering what techniques everyone has been using for blending two normal maps together- and if anyone out there prefers using both normal and height maps over blending normals. Basically, I know there are a variety of different ways you can blend normals together, some more arbitrary than others. This blog here… -
Re: Blending normal maps- your thoughts?
I use the RNM method, either by the program I wrote for it, but usually using Vincent Callebaut's Photoshop plugin; http://vincentcallebaut.com/CombineNormal.html Derivative normal maps get very simply blended by adding them together... but I don't think they're widely used, I wouldn't worry about those too much. -
Re: Blending normal maps- your thoughts?
Awesome- this is exactly what I was looking for malkavian! Gonna compare the material to the math on the blog for my own purposes but it looks like it checks out! :) Excited -
Re: Blending normal maps- your thoughts?
Seems to work out. The one caveat with the RMN method I found (discussed by Stephen Hill in the comments of his blog) is that if you are working with 8-bit normals, you need to scale the detail map by (-0.5,-0.5,0.5) before running the math as opposed to (-1,-1,1). I tried this and it looks more accurate to his preview on… -
Re: Blending normal maps- your thoughts?
Regarding unreal engine you can easily translate the code to material nodes. I've done this for UE3 and it should work for UE4 just the same. http://www.abload.de/img/blendnormals_rnm019yu1w.png http://oliverm-h.blogspot.de/2014/01/ue3udk-mixing-normal-maps.html
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