circularFill.rbxl (26.9 KB)
I have this example place that should do a circular fill on images with any asset id you want. I tested with most of sizes and textures. You can change the numbers provided in the script or change the assets as described in comments.
It uses clipDescendants as well as 2 gradients with a little offset. You could use similar method but make 2 clipping frame horizontal instead if you want it to start horizontally.