> I notice between lines 29 & 33 of your convolution version > you have pushed a blurFilter into the filterArray
It's blurring the individual item - the second time around blurs the entire canvas. This still means Blur + blur = slow on Pc/ fast on mac blur + convo slow on mac/fast on PC - if you > remove this from both versions and rely on convolution purely > for blurring, as you can observe the effect isn't as > pronounced But there's still a performance difference - which is platform dependant, which to me is an issue. as directly applying a blurFilter - to get an > effective blur from a single iteration of a convolution > matrix I've found requires a 5x5 matrix or alternatively use > multiple iterations which may negate any cpu advantage that a > single 3x3 convolution matrix application has? Go for it - obviously you'd use the best technique in order to achieve the effect you desire. Like I say this code is WIP but I thought it demonstrates the differences quite effectively. M _______________________________________________ Flashcoders mailing list [email protected] http://chattyfig.figleaf.com/mailman/listinfo/flashcoders
