Creating Cavity Maps with ZBrush

Taking the advantages of ZBrush pipeline, you are able to generate custom cavity maps to increase character's skin details.

1. Export CC character by GoZ feature.
2. In ZBrush, select the face with MaskPen tool, which increase the performance by hiding ActivePoints.
   
   The un-selected parts will be hidden.
   
3. Expand the Masking > Mask By Cavity section.
   
4. Click the Flat Color button.
   
5. Click the Mask By Cavity button to generate the cavity fine lines.
   
6. Set the Mask By Cavity Intensity to 100.
   
   Zoom in to inspect the cavity result.
   
7. Adjust the curve and click the Mask By Cavity button.
   
   The texture will be updated accordingly.
   
8. Repeat the previous step until you are satisfied with the cavity effect (zoom in for previewing details if necessary).
   
9. After the mask is created, set to RGB mode.
   
10. On the Color tray, set the swatch color to white and click the FillObject button to fill the non-masked object with white.
    
11. Click the Inverse button on the Mask panel.
    
12. On the Color tray, set the swatch color the black and click the FillObject button again.
    
    After these steps, the grayscale colors of the cavity are painted on the object.
13. Select the Texture size (high resolution for baking more details) on the UV Map tray.
    
14. On the Texture Map tray, click the New From Polypaint button to create a new texture map.
    
15. Click the Clone Txtr button to add the texture to the Texture channel on the left shelf.
    
16. Export the texture with ZBrush export texture features as an image file.
17. You can drag and drop the image file to the Cavity channel of the character in Character Creator.
    
18. Switch the viewport to different render view (General, and Roughness are recommended) and adjust the Cavity Strength for inspecting the cavity result.

    General Render View	Roughness Render View