DgVoodoo creator discusses Swat 3

Yes, more than a simple hack.

The values for those calls in the OPcode will mostly be hardcoded. Like I said in a previous post, if the code sets values before the call to say 0, that line of opcode is 4 bytes, we cant modify that value by changing it because you need at least 8 bytes  for a number larger than 0.

The location where I am currently viewing the calls is near the location of the CodeCave call. That will at least give you a real world example of those calls to mess with.