Packed UDIM tiles instead of distributing across tiles [TODO
Sept 23, 2017 15:38:48 GMT
Remi Arquier likes this
Post by kwhali on Sept 23, 2017 15:38:48 GMT
I have noticed that if I have U4 V3 for my UDIM tiles, Unfold3D might not be able to utilize the available tiles with the given islands effectively and leave alot of blank empty space. Rather than leaving some UDIM tiles it places the islands across each one instead of compacting several tiles into one UDIM tile which I can do manually after the pack.
So rather than 12 UDIM I might realize Unfold3D with current UV islands could compact down to 5 tiles, I could then either work on the UV islands some more, reduce the tiles to 6 or unwrap another mesh into the spare UDIMs(not sure if groups and other tile pack filtering settings can span several UDIM tiles at the moment?). In most cases I might only see one or two obvious UDIM tiles that could be freed up with 100 UDIM tiles. Though there might be some free space to compact islands into throughout. This seems to be due to the way pack works, even with high setting and multiple mutations it would seem that I could do a reverse pack that takes islands from the last UDIM tile and tries to pack them into an earlier tile(maybe starting at the first tile again.
It could be added as another pack setting, like "passes" I guess to optimize the pack? While the goal is to make the most of UDIMs by fitting UVs into more tiles to get better detail through more textures, it is a waste of textures and baking to put islands into new UDIM tiles to use all UDIM tiles instead of using empty space(no resize required, just translate or rotate) in some packed tiles, empty UDIM tile would be better in this case.
I have example mesh for this that I can provide.
So rather than 12 UDIM I might realize Unfold3D with current UV islands could compact down to 5 tiles, I could then either work on the UV islands some more, reduce the tiles to 6 or unwrap another mesh into the spare UDIMs(not sure if groups and other tile pack filtering settings can span several UDIM tiles at the moment?). In most cases I might only see one or two obvious UDIM tiles that could be freed up with 100 UDIM tiles. Though there might be some free space to compact islands into throughout. This seems to be due to the way pack works, even with high setting and multiple mutations it would seem that I could do a reverse pack that takes islands from the last UDIM tile and tries to pack them into an earlier tile(maybe starting at the first tile again.
It could be added as another pack setting, like "passes" I guess to optimize the pack? While the goal is to make the most of UDIMs by fitting UVs into more tiles to get better detail through more textures, it is a waste of textures and baking to put islands into new UDIM tiles to use all UDIM tiles instead of using empty space(no resize required, just translate or rotate) in some packed tiles, empty UDIM tile would be better in this case.
I have example mesh for this that I can provide.
