2011/3/13 Rico Schüller kgbricola@web.de:
- if (tag != 0xfeff0901)
Looks like the kind of thing you'd want a constant or inline function for. If I were to guess, the feff part means it's an effect (similar to the ffff for d3d9 pixel shaders and the fffe for d3d9 vertex shaders), and 0901 for version 9.1 (also similar to the d3d9 shader version token).