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Make use of "Bleed", "Margin", and "Padding" consistent
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Description

Various tools use the Bleed, Margin, and Padding terms differently. This should be made consistent.

My understanding of the correct usage is this:

  • Margin: empty space around items, such as UVs, in order to allow room for texture padding.
  • Padding: generated pixels within the margins around the island borders of textures to prevent bleeding.
  • Bleeding: the overlapping of UVs onto the wrong texturespace, generally due to downsampling, that results in seams

Polycount has a good Wiki entry on Edge Padding: http://wiki.polycount.com/EdgePadding

Details

Type
To Do

Event Timeline

Brecht Van Lommel (brecht) triaged this task as Normal priority.Nov 14 2013, 11:32 AM
Jonathan Williamson (carter2422) changed Type from Design to To Do.Nov 24 2013, 6:19 PM

Do you have more information on this? The link included is a 404 now.

I agree with Jonathan. Margin is being used for both spacing UV islands when unwrapping and extending the pixels when baking for example.
And bleeding is also used for extending pixels but this time when painting a texture. It's a bit confusing.