Can zbrush export PRTpn maps from a 2.5d tileable texture?

Makkon

Does zbrush have the ability to export PRTpn maps? More specifically from a 2.5d tiled texture.

I ask because that map has proven to be invaluable when making current gen textures. Using the green channel from the PRTp map does practically all of the lighting work, as laid out by Choco.
http://www.polycount.com/forum/showpost.php?p=1684128&postcount=42

choco

Even better, you can use the Mrgbz grabber to capture materials applied to your canvas. There is still a seam problem which will show up at the boundaries of the textures if shadows are on when doing a best render.
I would suggest to experiment with the matcaps. I usually extract the sketch gummy matcap which gives good results when used as an overlay layer in photoshop.

Makkon

I'll have to give that a shot, thank you! Any ideas on eliminating the seam? Maybe the texture can be offset a variable amount and the textures can be combined in PS.

I honestly wish I didn't totally suck at zbrush, its interface is so strange. It's going to take quite some time to learn it. :[

Z3D

this tut show how to fix seams with Zb and Ps - http://highbred3d.com/tutorials/zbrush-tiling-textures

I guess can be more easily way to make that ; You can just put a plane in front of and bake all in Xn

Makkon

That's right up my ally, Z3D! I love you guys, thank you both. I've got a lot of reading to do.

tristamus

PRT map is amazing indeed, but I don't think it's good unless you'r object needs top-down lighting, because that's what it seems to emulate.

So as long as you're okay with straight up top-down lighting, it's awesome.

decorix

Hi Coco,

I was wondering about your setup. Doesn't the carvature map need to
be placed on top of the AO?? Or is this because you are using 50% gray?

I thought you would lose more detail on the edges as you have AO on top of the stack. Thanks for the info and setup.

choco wrote: »

Even better, you can use the Mrgbz grabber to capture materials applied to your canvas. There is still a seam problem which will show up at the boundaries of the textures if shadows are on when doing a best render.
I would suggest to experiment with the matcaps. I usually extract the sketch gummy matcap which gives good results when used as an overlay layer in photoshop.

Popeye9

For the seam issue I have been using a script found here. http://www.zbrushcentral.com/showthread.php?94752-Useful-small-ZScripts-and-Macros-for-ZBrush-4-amp-4R2&p=848052&viewfull=1#post848052

I would work on a copy of your document and the canvas has to be 1 layer to work but it saves the headache of painting out the seam.