You can define texel density to be set automatically before packing, on a per-island basis. It's also possible to define texel density "tiers": assign islands to tiers once, then adjust the texel density for each tier at any time without needing to manually reassign individual islands.
A new group layout mode has been added for texture atlas workflows, along with many other functional, UI, and user experience improvements. To learn more about UVPackmaster 4, check out the FAQ.
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