The code in the Metal look and feel that initializes the
MetalBumps has an amusing performance glitch.

It does a graphics.setColor on each pixel it draws. On JDK1.2
this causes a pretty steep performance penalty as it causes
cached state to be discarded in the underlying BufferedImageGraphics2D
object.

It turns out that on my 150 MHz Pentium we were spending 5 seconds
during Swing startup (30% of the total) in the MetalBumps code.

Changing the MetalBumps code to avoid doing such frequent setColors
and also fixing a caching bug in BufferedImageGraphics2D (#4146832)
reduced Swing starup time by 5 seconds. ha!!!!

See the proposed fix section for my changes.

graham.hamilton@Eng 1998-06-08