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use a simple linear distance model for attenuation

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This was SVN commit r7112.
This commit is contained in:
janwas 2009-08-12 21:28:10 +00:00
parent 4c4fec0644
commit 92786e368b
1 changed files with 20 additions and 6 deletions
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26
source/lib/res/sound/snd_mgr.cpp
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@ -602,6 +602,8 @@ static LibError al_init()
al_src_init(); al_src_init();
al_listener_latch(); al_listener_latch();
alDistanceModel(AL_LINEAR_DISTANCE_CLAMPED);
return INFO::OK; return INFO::OK;
} }
@ -1443,14 +1445,26 @@ static void vsrc_latch(VSrc* vs)
return; return;
debug_assert(alIsSource(vs->al_src)); debug_assert(alIsSource(vs->al_src));
float rolloff = 1.0f;
float referenceDistance = 125.0f;
float maxDistance = 500.0f;
if(vs->relative)
{
rolloff = 0.0f;
referenceDistance = 0.0f;
maxDistance = 0.0f;
}
AL_CHECK; AL_CHECK;
alSourcefv(vs->al_src, AL_POSITION, vs->pos); alSourcefv(vs->al_src, AL_POSITION, vs->pos);
alSourcei (vs->al_src, AL_SOURCE_RELATIVE, vs->relative); alSourcei (vs->al_src, AL_SOURCE_RELATIVE, vs->relative);
alSourcef (vs->al_src, AL_ROLLOFF_FACTOR, vs->relative? 0.0f : 1.0f); alSourcef (vs->al_src, AL_ROLLOFF_FACTOR, rolloff);
alSourcef (vs->al_src, AL_GAIN, vs->gain); alSourcef (vs->al_src, AL_REFERENCE_DISTANCE, referenceDistance);
alSourcef (vs->al_src, AL_PITCH, vs->pitch); alSourcef (vs->al_src, AL_MAX_DISTANCE, maxDistance);
alSourcei (vs->al_src, AL_LOOPING, vs->loop); alSourcef (vs->al_src, AL_GAIN, vs->gain);
alSourcef (vs->al_src, AL_PITCH, vs->pitch);
alSourcei (vs->al_src, AL_LOOPING, vs->loop);
ALenum err = alGetError(); ALenum err = alGetError();
if(err != AL_NO_ERROR) if(err != AL_NO_ERROR)