gtk:snapshot-push-mask (snapshot mode)

snapshot -- a gtk:snapshot object
mode -- a gsk:mask-mode value to use

Until the first call to the gtk:snapshot-pop function, the mask image for the mask operation will be recorded. After that call, the source image will be recorded until the second call to the gtk:snapshot-pop function.

Calling this function requires two subsequent calls to the gtk:snapshot-pop function.

Since 4.10