Hi Glenn, first off thanks for posting the tutorials on greebling.
I have a problem with displacement maps and GUV maps in zBrush.
I made a simple cube with zRemesher (to get quad topology) and assign random polygroups to it
Then, I made GUV tiles.
I then put a greeble texture map, and a displacement map on said object.
Upon turning displacement mode on, there appear to be gaps or see-through areas only in the parts where there are UV tiles ‘seams’ or ‘edges’.
Also to note, I am using 16-bit PSD for the maps.
Also I made sure there were no pure blacks in the maps by adjusting contrast in photoshop. So it can’t be a transparent texture resulting from pure black textures.
And it only happens exclusively on the UV’edges
What can I do to fill up these gaps?
Do you also get this issue and just ignore it due to the fact that when U and V tiling is increased, the displacement details tend to ‘hide’ these little seams?
thank you!
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Just the polygroups.
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After GUV, and applying rainbow texture. Can clearly see the tiles seams.
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Applying a texture map from your nanomesh greeble generator.
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Displacing it with the same alpha map. Only the UV tile seams create the gaps or transparency.
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Texture map changed back to rainbow gradient to see more clearly the gaps in the seams.
The same issue also arises when testing on a simple GUV-ed sphere with a simple alpha map displacement.
(I turned on double face view to better appreciate the gaps)
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