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Baking from thin object makes margin inside UV island too
Open, Confirmed, MediumPublic

Description

System Information
Operating system: win7 x64

Blender Version
Broken: 2.80 (sub 47), 40412499433e, 2019-03-09 16:19

Short description of error
Bleeding margin go inside island if baked emmiter-mesh is not cover all.

how to reproduce

Open file:
Bake from WR to Recipient twice:
at first with 6px margin and option clear image,
then change color of WR`s emmision, without clearing image and with 0px margin.
You will have such result:

Margin made is only for filling seams (especially when mipmap shrinking textures).

File:

Details

Type
Bug

Event Timeline

Sebastian Parborg (zeddb) triaged this task as Confirmed, Medium priority.Mar 14 2019, 3:00 PM

As it says here: https://docs.blender.org/manual/en/dev/render/cycles/baking.html?highlight=ray%20distance#additional-options
The margin should only extend from the border of the UV islands. But it seems to just extend from the alpha border instead.