I've been re-trying to port the WoD login to WOTLK, and it looks pretty good now.
Before:
http://imgur.com/pZbl54fAfter:
http://imgur.com/LYLpSSB,UL7Cozt#0There was some stuff I just couldn't get to render properly like the clouds and particles outside the portal. I don't think it's in the renderflags as that bareley changed anything maybe the order/flags in the skin file? I don't really know where those flags/shaders are documented.
In the end I just removed them.
As that's somewhat of a hackfix, when the animations reset it shows its uglyness.
http://imgur.com/LYLpSSB,UL7Cozt#1I tried changing the length, playback speed and some timestamps in the animation to stop it from resetting everything to but only caused a freeze.
If anyone knows how to make that stuff render properly or how to stop the animations from resetting that'd be great.
EDIT
Turns out I can't simply remove textures by setting everything to 0 for some stuff, changed the order to 32768 to hide them.