MetalBumps creates a Frame and a Canvas in order to create the Image which will be blitted. This could be reworked to be done with image producer/consumer. This would likely improve startup time (as an extra Frame wouldn't have to be created).

Beyond the performance considerations this Frame has caused a world of strange behavior over the past few months including deadlocks with other parts of the JDK. It is time for it to die.

steve.wilson@eng