NPOT Texture support

[MasterKelli]

Hi,

I would very much like if the 2D Toolkit would support NPOT textures. It would save about 20-50% memory in games that don't need mipmapping. Also packing with mesh definition would be nice. On mobile it's critical to use as little memory as possible.

[unikronsoftware]

We have no plans of officially supporting NPOT atlas sizes, and all the support madness that comes with various android platforms supporting one thing and not another, etc. However, the list of resolutions is in tk2dSpriteCollectionEditorSettingsView.cs, look for allowedAtlasSizes and add what you like there.

We don't have plans of adding mesh definition, unless Unity exposes some additional stuff in their sprite system.