It doesn't (last I checked)... neither does CreateVolume(). This also requires a test to see what Windows does.
Checking if a format is supported before
returning the gl config doesn't really make sense. If the format isn't supported and we ask gl for a compressed texture we will get an error returned and broken graphics(because we ignore gl errors generally). If we pass 0 instead for the gl format and internal format we will have broken graphics too but I don't think gl returns an error then(although I'd have to check the man page for that)
I agree, but I thought the patch was a no-op :)
Oh well, not a 100% no op then. But that is hard to nop with a constant table :-)
Well, almost all cards support that extension, so it's a de-facto no-op
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Stefan Dösinger