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Maniphest T64331

principled bsdf -> fbx -> unity makes solid materials transparent
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Description

Blender Version
Broken: 2.80 0e78e3038d02 date 2019-04-03

  1. make a cube
  2. assign a material
  3. add a principled BSDF node .. make it a solid color, make sure transmission=0 (it is by default)
  4. export FBX
  5. drop it into unity

RESULT: the material is assigned the "transparent" shader, and the object is incorrectly transparent.

If you repeat this with the "Diffuse BSDF" node, the object has the "opaque" shader, and looks solid.

Obviously one answer is just to "dont use principled bsdf" when you plan to export to unity. I don't know what the format of the FBX data is, and whether this is a blender problem, or a unity problem.. but it would sure be nice if there was a way to fix it.

Event Timeline

David Jeske (jeske) created this task.May 8 2019, 9:50 PM
David Jeske (jeske) updated the task description. (Show Details)May 8 2019, 9:53 PM
Brecht Van Lommel (brecht) edited projects, added Add-ons (Community); removed BF Blender.May 9 2019, 2:24 AM
Brendon Murphy (meta-androcto) assigned this task to Bastien Montagne (mont29).Sep 9 2019, 5:27 AM
Brendon Murphy (meta-androcto) added a project: Import/Export.
Bastien Montagne (mont29) changed the task status from Unknown Status to Resolved.Sep 9 2019, 2:16 PM
Bastien Montagne (mont29) added a subscriber: Brendon Murphy (meta-androcto).

As far as I remember, that has been fixed already (Unity/FBX have a very weird way of handling color values in some cases). @Brendon Murphy (meta-androcto) again please avoid blind assignments, triaging is more than just finding someone to drop the report on.