Cool/weird cubemap shader effects?

polycounter lvl 10
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Swizzle polycounter lvl 10
I was discussing this with some people at work and we were trying to determine how the sword effects in this Guild Wars 2 video were achieved:

[ame=" Wars 2 Legendary Greatsword Twilight - YouTube[/ame]

It's pretty obvious that they're projecting a cubemap on the mesh and effects, but the cubemap isn't affected by things like surface normals since there's no distortion happening. I'm not entirely certain how they did that, but I've my suspicions that it's some sort of weird camera projection trick. I could even see it being a crazy post-process effect that gets masked by the geo and particles, but that seems kind of unlikely.

Anyway, I'd like to be able to replicate something close to this in UDK.

Thoughts, ideas, solutions?

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