ckolivas won't add features for this

Anyway, looked at the git - no autogen.sh, configure or Makefile in https://github.com/Lolcust/Tenebrix.git
So makes it pointless.
... and I was gonna add my name to a block for this too (like almost all of the other alt-chains) oh well ...

As for the actual scrypt - lol r=1, p=1, N=1024 so you are joking right?
The real issue is that I'd doubt anyone would bother to write a GPU version since there is no gain from the effort and there are few who are experienced at working with OpenCL ...