Can't export to flash

Question

I am trying to export a pixelBender program into the
flash-compiled format and it is unable to do this. here is the
code: Yes, it compiles. Even weirder, when I import two images and
press "run", it says "this kernel is too complex for your graphics
card", and I'm on a MacBook Pro 2.33ghz 3gb ram, with an ATI radeon
X1600

Answer 1

I'm wondering if things like counters are possible in
PixelBender. This function ramps from 0 to 1, and cycles back to 0.
it creates a sawtooth wave:
private var counter2 = 0;
private function sawTooth(c:Number, f:Number):Number
if ( (c + f) > 1) {c = c - 1;}
c = c + f;
counter2 = c
return 2 * (c - Math.floor(c + 0.5))
private function looper()
for (var i:int = 0; i < 1000; i++)
sawTooth(counter2, 220/44100);
As you can see, it increments from 0 to 1 in steps of
0.0049886, so it's basically going to loop around about 5 times.
Is it possible to do the sawTooth() in PixelBender? it
updates a counter on every call to the function. There are maybe
one or two tutorials out there about using pixelBender for number
crunching, and none of them are very specific on the
subject.