Canvas rendering issues / Text Transition rendering issues

[Jim Graham]

On 1/2/2013 4:13 PM, Daniel Zwolenski wrote:
> We have also added a Canvas as a background for the game in the 'grass'
> level (the 'brick' level uses a Pane as a background) and it has resulted
> in all sorts of odd problems. The canvas level has some pretty serious
> issues:
>
>     - Bad Guys (nodes) rendering outside of their parents clip bound's and
>     then tend to leave a tail behind them (i.e. the back-buffer is not cleared
>     or something)

This looks like dirty region optimization problems.  It goes away if I 
specify "-Dprism.dirtyopts=false"...

			...jim