zbrush - bypass alpha for RGB painting

Kevin Albers

I'm playing around with creating custom brush alphas and textures for zbrush sculpting. I've made a pair of textures for a brush...a heightmap/alpha and a diffuse texture. I can assign them to a brush and sculpt/polypaint using drag rectangle strokes, but there is a funky issue. The alpha is applied to the brush texture, along with adding/subtracting height, but I want the texture to applied at full strength, not attenuated by the alpha. Anyone know if there is a way to bypass/turn off alpha for the RGB component of a brush?

As the attached image shows, I can either apply a brush stroke with height, or with texture (no alpha), or with height and texture, but the texture is attenuated by the brush alpha. The bottom 'crater' is what I want to achieve, but I had to make this using two separate brush strokes, one for height and then one for the texture.

silversteez

i can't think of an easy way to do this in one pass, but if you want to apply the the texture pass in the exact place you've done the sculpting pass you can use ctrl-1 to repeat your last stroke after changing your brush settings from Zadd to Rgb, disable alpha, etc etc.

nyloc

I am running into this same issue and was wondering if anyone had a better solution than just repeating last stroke as i'm running into an issue of the rgb not lining up exactly with the initial drag rectangle stroke....

Any help on a workaround would be awesome!

nyloc

I posted on zbrushcentral and was suggested a decent workaround using a handy plugin.

check out the thread here:
http://www.zbrushcentral.com/showthread.php?195745-PolyPaint-ISSUE-how-to-use-Alpha-map-for-depth-but-not-affect-RGB-intensity-in-brush&p=1152225#post1152225