mtrlt, please enlighten us.
Random tidbit that may be of interest if anyone is unsure whether mtrlt knows what he's talking about. Nova, you mention above that you've looked at the OpenCL source for scrypt mining. Assuming that you're talking about the OpenCL kernel from Reaper or cgminer, hop back into the source, scroll up to the top and examine the copyrights at the top of the file.
https://github.com/ckolivas/cgminer/blob/master/scrypt130511.cl#L2At no point did I imply he didn't know what he was talking about.
However posting the entirety of the code and pointing at it and saying look, really wasn't an option.
I was asking him to explain what's going on in it in just a couple of sentences or paragraphs.