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Preserve data and position when reallocating the reverb effect

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Still not perfect, but better for when the size doesn't change
This commit is contained in:
Chris Robinson 2008-02-18 21:58:58 -08:00
parent b1bdd7c89f
commit 847b3e8b61
1 changed files with 7 additions and 3 deletions
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10
OpenAL32/alAuxEffectSlot.c
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@ -493,16 +493,20 @@ static ALvoid InitializeEffect(ALCcontext *Context, ALeffectslot *ALEffectSlot,
alSetError(AL_OUT_OF_MEMORY);
return;
}
if(ALEffectSlot->ReverbBuffer)
memcpy(ptr, ALEffectSlot->ReverbBuffer, min(size, ALEffectSlot->ReverbLength)*sizeof(ALfloat));
ALEffectSlot->ReverbLength = size;
ALEffectSlot->ReverbPos = 0;
ALEffectSlot->ReverbPos %= size;
ALEffectSlot->ReverbReflectPos = (ALuint)(ALEffectSlot->ReverbLength -
((ALfloat)Context->Frequency *
effect->Reverb.ReflectionsDelay)) %
effect->Reverb.ReflectionsDelay) +
ALEffectSlot->ReverbPos) %
ALEffectSlot->ReverbLength;
ALEffectSlot->ReverbLatePos = (ALuint)(ALEffectSlot->ReverbLength -
((ALfloat)Context->Frequency *
(effect->Reverb.LateReverbDelay +
effect->Reverb.ReflectionsDelay))) %
effect->Reverb.ReflectionsDelay)) +
ALEffectSlot->ReverbPos) %
ALEffectSlot->ReverbLength;
ALEffectSlot->ReverbDecayGain = pow(1.0/32768.0, 1.0/(effect->Reverb.DecayTime/reverbwait));
}