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-rw-r--r--Alc/ALu.c17
1 files changed, 9 insertions, 8 deletions
diff --git a/Alc/ALu.c b/Alc/ALu.c
index c2ff4d57..01621f6f 100644
--- a/Alc/ALu.c
+++ b/Alc/ALu.c
@@ -628,17 +628,18 @@ static ALvoid CalcSourceParams(const ALCcontext *ALContext, ALsource *ALSource,
}
// Distance-based air absorption
- if(ALSource->AirAbsorptionFactor > 0.0f && ALSource->DistanceModel != AL_NONE)
+ if(ALSource->AirAbsorptionFactor > 0.0f && flAttenuation < 1.0f)
{
- ALfloat dist = Distance-MinDist;
- ALfloat absorb;
+ ALfloat absorb = 0.0f;
- if(dist < 0.0f) dist = 0.0f;
// Absorption calculation is done in dB
- absorb = (ALSource->AirAbsorptionFactor*AIRABSORBGAINDBHF) *
- (dist*MetersPerUnit);
- // Convert dB to linear gain before applying
- absorb = pow(10.0, absorb/20.0);
+ if(flAttenuation > 0.0f)
+ {
+ absorb = (MinDist/flAttenuation - MinDist)*MetersPerUnit *
+ (ALSource->AirAbsorptionFactor*AIRABSORBGAINDBHF);
+ // Convert dB to linear gain before applying
+ absorb = pow(10.0, absorb/20.0);
+ }
DryGainHF *= absorb;
for(i = 0;i < MAX_SENDS;i++)
WetGainHF[i] *= absorb;