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| author | paramat <mat.gregory@virginmedia.com> | 2017-01-24 10:16:56 +0000 |
|---|---|---|
| committer | paramat <mat.gregory@virginmedia.com> | 2017-02-09 00:10:35 +0000 |
| commit | a5ee7139a591eeffce5171e0df7a76f3c7a1d57e (patch) | |
| tree | 7af5e17003aa379efe45582cdc63c3c6e1e9e826 /src/sound_openal.cpp | |
| parent | e2ad76f91087215309012300eb9f1ebdd7fa40ee (diff) | |
| download | minetest-a5ee7139a591eeffce5171e0df7a76f3c7a1d57e.tar.gz minetest-a5ee7139a591eeffce5171e0df7a76f3c7a1d57e.tar.bz2 minetest-a5ee7139a591eeffce5171e0df7a76f3c7a1d57e.zip | |
OpenAL sound: Use a simpler distance model
In createPlayingSoundAt(), AL_ROLLOFF_FACTOR is not set, so it has
the default value of 1.0, this makes the equation of the currently
used AL_EXPONENT_DISTANCE distance model identical to the equation
of the simpler AL_INVERSE_DISTANCE distance model.
Using AL_INVERSE_DISTANCE means an exponent is not processed,
exponents are quite intensive to process.
There is no change in sound attenuation behaviour.
The commented-out AL_ROLLOFF_FACTOR value is removed as it would
now have a different effect if used.
Diffstat (limited to 'src/sound_openal.cpp')
| -rw-r--r-- | src/sound_openal.cpp | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/src/sound_openal.cpp b/src/sound_openal.cpp index 317667f52..b9af9e3a9 100644 --- a/src/sound_openal.cpp +++ b/src/sound_openal.cpp @@ -317,7 +317,7 @@ public: return; } - alDistanceModel(AL_EXPONENT_DISTANCE); + alDistanceModel(AL_INVERSE_DISTANCE); infostream<<"Audio: Initialized: OpenAL "<<alGetString(AL_VERSION) <<", using "<<alcGetString(m_device, ALC_DEVICE_SPECIFIER) @@ -409,7 +409,6 @@ public: alSourcei(sound->source_id, AL_SOURCE_RELATIVE, false); alSource3f(sound->source_id, AL_POSITION, pos.X, pos.Y, pos.Z); alSource3f(sound->source_id, AL_VELOCITY, 0, 0, 0); - //alSourcef(sound->source_id, AL_ROLLOFF_FACTOR, 0.7); alSourcef(sound->source_id, AL_REFERENCE_DISTANCE, 30.0); alSourcei(sound->source_id, AL_LOOPING, loop ? AL_TRUE : AL_FALSE); volume = MYMAX(0.0, volume); |