[Openal] ConvertReverbParamaters() from EFX-Util

[Daniel PEACOCK]

Hi Christopher,

> When you make a call to change *just* the Environment Size property
> (DSPROPERTY_EAXLISTENER_ENVIRONMENTSIZE) then this will change other
> reverb parameters based on the flags you have set. The exact formulas
> used are not available I'm afraid.
>
> Is there any way to just change the environment size property when
> attempting to convert EAX reverb to EFX reverb?

Not with the current efx-util.lib.

> > I
> presume that you are asking because you are using the EFX extension and
> you would like the ability to dynamically change the room size?
>
> Personally, I prefer the density and diffusion model.  For the
> purpose of this e-mail though, I need to convert the adjustment of
> EAX parameters to the adjustment of the equivalent EFX ones.
> Unfortunately, that includes dynamically changing the room size. :(
>
> Given the descriptions in the EAX 2 specification, I may be able to
> come up with something that works.  However, I was hoping there
> existed an official way that would do it correctly - and I'm a bit lazy.
;)

If you like I can put together a new function in the efx-util.lib that
updates an EAX Reverb Properties structure given a new value for the
Environment Size property.   You could take the output of that and feed it
into the existing ConvertReverbParameters function.

Dan
Creative Labs, UK