3ds Max - Vray, Multi tile UV workout problems

prekabreki

Hi there

I've found startlingly little information about both 3ds Max Multi-tile/multi-uv-shell workflow and I'm having a lot of trouble getting things to work with the info I do have.

I split the character I'm using into several 4K UV shells, the head is seperate for example, for greater detail during close up shots.
I also have a displacement map for each shell generated from ZBrush.

I've tried using a Composite map to combine the Bitmaps together, setting each bitmap to the right UV Offset and then plugging that into a VrayMtl.

I've tried using UV channels in Max.

I've tried taking the whole thing into Maya and using the Layered Texture and UV Sets but that didn't take me far.


Now I know this isn't a particularly rare workflow. Let's say there's going to be a close up of a characters face. The body is in one UV shell and the head is in a whole separate shell, so the textures lose less quality because of scaling.
What am I missing? Any help with this is greatly appreciated.

onionhead_o

whats is the problem, screenshots and description of the problem would help. I have some experience with multi uv tile in both 3dsmax and Maya that might be able to help you.

prekabreki

I have a character split up into multiple UV shells.
I've tried offsetting the bitmap by so it fits in with the setup on the picture I attached. But that didn't work.
I've tried using a multi-sub object material and apply each texture to a specific Material ID that matched the UV, no luck.
I've tried stacking all the UVs into UV space 0,1 and using UV channels.

I just can't seem to find a proper workflow for applying my textures to a character with multiple UV shells.
Pulling my hair ooout...:poly142:

oglu

if you use a mudbox or mari texture naming vray should be able to read the tiles native... just use the right tag in the file node...

prekabreki

oglu wrote: »

if you use a mudbox or mari texture naming vray should be able to read the tiles native... just use the right tag in the file node...

I tiled it up in Max, and textured in Zbrush.
What do you mean use the right tag in the file node?

.Wiki

Wea are rendering with arnold and use multiple patches too for characters and sets. So you need to place a tag inside of the file-read-node to specifiy that it should read multiple tiles. In Arnold for Softimage its /image-name.<udim>.exr for example.

But those patches need to have an exact order. So the first 10 go to the right and then the second row starts above the first tile and goes to the right again.

http://help.chaosgroup.com/vray/help/maya/150R1/bitmap_names.htm this might help

Noors

How comes a multimaterial didn't work ? What are the issues ?

oglu

if you use mudbox or udim tags it should load the files fine...
you have to name the files correct...

for mudbox naming --> texturename_u1_v1
for UDIM --> texturename.1001

http://help.chaosgroup.com/vray/help/maya/150R1/bitmap_names.htm

or use this method from neil should also work...
http://www.neilblevins.com/cg_education/multiple_uv_tiles/multiple_uvs_tiles.htm

prekabreki

Thanks for all the help, I'll read through all these things and try to figure out how it works.
If it's as simple as renaming my textures I'll be a very happy boy.

prekabreki

Problem solved, thank you so much for your help guys.
I ended up using the 'Neil' method, which I actually had tried before, but third time's the charm!