kimdonga Thank you for your feedback! I think what you would like to use is a feature called "image mask" or "alpha mask", but even if we do not consider CPU usage, it would be difficult to implement in the editor for the time being, because it would be difficult to do in all runtimes. We try to avoid adding features that are only available in some runtimes and not in others as much as possible, so this feature is difficult to implement. However, we have received similar requests in the past and will consider them in future improvements.
