I have a question about memory usage.
For example, I made one spine asset, its data size is 10 MB(include texture, bone and animation data). Then I use it to create 100 SkeletonAnimtion instances in game.
I want to know, will it cost 1000 MB memory totally? or How much will it cost?
No, multiple instances like SkeletonAnimation only load the SkeletonData once, it is then shared across all instances. See sections "Data objects" and "Instance objects" in the documentation:
Runtime Architecture - Spine Runtimes Guide: Data objects
Runtime Architecture - Spine Runtimes Guide: Instance objects
In general, please be sure to export your skeleton in binary format instead of as a .json file (as described here) when file size and loading times matter (so for your actual game build).
