Hey there, im atm trying to create an effect similar to one in the game ‘geometrey wars’ where the grid in the background ripples with explosions etc. Ive just got my head around displacement filters and got a nice effect going… however it kills the CPU, and this is going to have space ships flying around also. So i come to you in search of any optimisation tips - i have proberly coded it terribly so i will attach it below.
Btw…
Im currently using the filter on a movieclip, would loading the image into a bitmapdata and applying the filter to that speed things up a bit?
Thanks in advance for any help! 
