[Openal-devel] Room Rolloff

[Richard Furse]

Apols about the endless spec questions - I think I'm nearly done.

For the EFX reverbs, there seem to be two room rolloff settings, one on the
source and one on the reverb. The spec doesn't seem to say how the two
should be combined - I'm guessing this is just a multiplication?

Also, the spec becomes kinda mysterious around what behaviour is expected
when the room rolloff works out as zero. EAX "naturally manages . natural
rolloff of reflected sound vs distance in typical rooms". Anyone know what
is expected here? At the moment I'm just using the zero rolloff setting,
which means the reverb is the same regardless of source location, which
sounds alright to me.

Incidentally, I don't really understand why OpenAL recommends that the
reverb send gain and gainHF should be modified by source direction. I'm
guessing it would sound better without. Out of interest, does anyone know
which games & cards support directional sources? Maybe the point is moot...

--Richard
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