Space invaders has minor redraw issues
Otherwise the game plays great on feature-branch!
The current patch on bug 15388 makes these issues slightly worse, i'm afraid.
I've reduced the issue, attaching test case.
Created attachment 16632 [details]
What's strange is that CG shows us updating the whole region in question, yet it seems to draw incorrectly. This is the only remaining bug I'm aware of in space invaders.
Fixed since a long time in trunk, even has a testcae ;-) Closing.