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2.78 RC2 - texture mapping distorted when using Experimental adaptive subsurf
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In Blender 2.78 RC2, the texture mapping seems to get distorted when enabling the experimental Adaptive Subsurf feature.
Attached is an example blend file

. With a rendered viewport open, just toggle the "Adaptive" box in the subsurf modifier to see the issue.
Here's what I did:
Launch Blender 2.78 RC2.
Enable experimental feature set.
Subdivide the default cube in edit mode 2 times.
Alt-Shift-S and set to To Sphere to 1.0 to round out the cube.
UV Unwrap the cube with spherical mapping.
Assign an image texture to the material.
Apply a subsurf modifier.
Open a Rendered preview viewport.
As soon as you check the Adaptive box in the subsurf modifier, you see the texture get kinked.
Example without adaptive:

Example with adaptive:


To Do

Event Timeline

Sergey Sharybin (sergey) lowered the priority of this task from Needs Triage by Developer to Normal.
Mai Lavelle (maiself) changed Type from Bug to To Do.Sep 21 2016, 2:29 AM
Aaron Carlisle (Blendify) closed this task as Archived.Sep 21 2016, 4:36 AM

I do not think a task is needed for this. Subdivisions of UV's are currently not supported. To work around this add a subsurf and apply it then add another subsurf and use adaptive.