Votes
0
Product:
Character Creator 3
Version:
3.22
Status:
Not Reproducible
Issue 6936
Request to join Character Creator beta to test displacement & maybe have content ready for the Marketplace on release
Hi I've got several types of characters that use displacement in different ways. Currently CC3 topology is not compatible with displacement - there are holes that are created while I paint in 3rd party programs. I know the issue looks like it might be resolved in your next gen character base CC3 Base+ but I'd like to test it and give feedback before you submit it to the market. I'm a power user I own iClone and CC3 pipeline, have found serious bugs in the past and have created shared workflows that prevent Iray, Indigo and Iclone from crashing or not being able to generate proper render files and lastly I'm a CCD member.

I've attached an image of example character that I'm working on, you've already seen my Grizzly bear this is a different character
OS: Windows 10
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  •  1516
Submitted byAscensi
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COMMENTS (15)
Ascensi
Hi Calvin, I dug up some research that should allow you to resolve all artifacts with subdivision surfaces if you change the topology slightly and unwrap the model with its curvature. 

This video explains with 100% clariety how to avoid artifacts with subdivision, but the UVs seams need to follow the same smooth topology.. no right angles (90 degrees) 
The part about the hand was shown at position 4:40  https://vimeo.com/2158706  but the entire video goes into detail about what causes the problems. 3DCoat baking tries to do its best with what a model has but because of the drastic corners from the UVs texture stretching results and the AO baking in 3DCoat catches the hard UVs which is good! because then you know what areas in your topology or UVs that need to be corrected to avoid textures stretching and other artifacts

This might offer more control to unwrap your models and avoid texture stretching  "Silo 3D Modeling Feature: LSCM UV Unwrapping" https://www.youtube.com/watch?v=CKFnDqR5BSo&feature=youtu.be   I think because there was no contour the  space  between the 90 degree turn of the UV and the straight line causes the texture in that area to warp/stretch into more of a "spiral" . It's as if someone put a dent in the mesh and in this case it's a dent in the UV.  Textures follow UVs and when there are abrupt changes the textures will show it.
Attachment:
  • TopologyUV Fix.png
Ascensi
The problem visible in iClone below reveals that it's a consistent problem between programs.
Attachment:
  • Tearing between fingers.jpg
Ascensi
An update and report on the new CC3 Base+ Character
90 degree UV seams cause displacement painting issues such as holes and texture stretching. I've experienced this in Zbrush and 3Dcoat. If no one in Reallusion works with testing displacement painting please allow me to test a fix for CC3Base+  I'd like to resolve this issue so anyone could expand their creative potential and personally I have a lot of characters that could be published to the marketplace sooner because I'd have less errors to try to figure out a workaround.
Attachment:
  • Bad UV edge.jpg
  • Bad UV edge-with displacement on.jpg
Ascensi
So it seems the topology is resolved between the shoulderblades. I was able to Goz & export the character with the full pose & UV in Zbrush since exporting obj with pose does not export all the UVs.
 
Anyway with fingers and legs spread and prepping for displacement in 3DCoat I had less holes/seam tear and this is because of 3DCoat's smoothing angle but some areas like the butt crack and ear still rip seams when painting with displacement.  The topology looks solid so I'm going to take the rest of the issue up with 3DCoat since I've recently learned creating displacement in Zbrush gives no problem/tearring whatsoever now.
Feedback Tracker Admin
Hi Ascensi,

Sorry for the late reply.
Currently, you can adjust character's pose in CC first, and export OBJ/FBX via current pose.
And use the pose that be adjusted to see if the bake texture still causing black holes.
We'll also consider to add some bake texture template pose for user in future version.

Calvin
Reallusion.
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