2.5d tileable texture bugs

[system]

Hey there,

im trying to make some nice tileable textures with the help of zbrush 2.5d painting tools but im running into some problems. When i want to export my tileable canvas, i get nasty seams even though its seamless when i use the tilde key (~) to scroll and see that it is tileable in the zbrush canvas. What even more weird, it seems that my document size is off. When i make a 16 by 16 pixel document, it is actually a 16 by 13 pixel document when i count the pixels by hand :S 

I really have no clue how to fix these problems. I would heighly apreciate it if i can get a fix for this as i see high potential in creating tileable textures with 2.5d painting. Thanks in advance.

Attachments

[system]

These topics seem to cover and solve some of my problems although i have to try the described workflows myself first:

http://www.zbrushcentral.com/showthread.php?t=54052&page=1&pp=15

http://boards.polycount.net/showthread.php?t=67476

It does seem that zbrush has some unfixed glitches with document size.

[ninjatastic]

did you use best render before sending it to PS? However, I can’t get zapplink to work with 3.5 R3

[system]

I did found a workflow described in one of my links which works for 2.5d painting. Its a workaround for the the glitches and derived from this awesome post by tveyes
In short it works as follows:

-paint in 2.5d as u would do normally (dont cross the borders, use ~ key to scroll canvas)

-use tveyes’ script to add 32 pixels on each side of the canvas.

-do a best render

-use layer–> bake

-do preview render

-substract the 32 pixels again by using the script

-do best render again

-export the document

For some reason this workflow works to get rid of the bug/glitch seams. I still have to try out the workflows to make a tiletexture without seams by using a 3d plane and wrapoptions but i guess it will work also as long as u stick to tveyes’ workflow.

I do find it weird that somehow this hasnt been fixed for 2 years and nobody seems to care as there isnt much information about it.

[CastorPT]

Has this issue been fixed somehow? I’m starting to use Zbrush more and more for tilleable textures, but having these seams is destroying the workflow…

In my case I get only 2 extra pixels on the top.

I’ve also noticed that if I use Alpha - Grab Doc I wont get seams but if I use Texture - Grab Doc I get them…

[CastorPT]

Turning off shadows and rendering at “Best” seems to fix it!