Add a volume-adjust config option to adjust the source output volume

Designed for apps that either don't change the listener's AL_GAIN, or don't
allow the listener's AL_GAIN to go above 1. This allows the volume to still be
increased further than such apps may allow, if users find it too quiet.

Be aware that increasing this can easily cause clipping. The gain limit
reported by AL_GAIN_LIMIT_SOFT is also affected by this.

1 files changed, 1 insertions, 1 deletions

diff --git a/Alc/ALu.c b/Alc/ALu.c
index f93781df..13aff5d9 100644
--- a/Alc/ALu.c
+++ b/Alc/ALu.c
@@ -278,7 +278,7 @@ static ALboolean CalcListenerParams(ALCcontext *Context)
                        0.0f);
     Listener->Params.Velocity = aluMatrixfVector(&Listener->Params.Matrix, &vel);
 
-    Listener->Params.Gain = ATOMIC_LOAD(&props->Gain, almemory_order_relaxed);
+    Listener->Params.Gain = ATOMIC_LOAD(&props->Gain, almemory_order_relaxed) * Context->GainBoost;
     Listener->Params.MetersPerUnit = ATOMIC_LOAD(&props->MetersPerUnit, almemory_order_relaxed);
 
     Listener->Params.DopplerFactor = ATOMIC_LOAD(&props->DopplerFactor, almemory_order_relaxed);