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The docs don’t really make this clear – am I required to set both the forwards and upwards orientation vectors when using 3D? I’m having trouble getting 3D panning/attenuation working so I’ve been wondering about this. Right now I think I have everything set up properly but I get absolutely no panning or attenuation.

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Yes you have to specify both vectors, and they have to be unit length, and perpendicular.

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