More directly map coefficients for ambisonic mixing buffers

Instead of looping over all the coefficients for each channel with multiplies,
when we know only one will have a non-0 factor for ambisonic mixing buffers,
just index the one with a non-0 factor.

1 files changed, 2 insertions, 4 deletions

diff --git a/Alc/effects/echo.c b/Alc/effects/echo.c
index 00bf5d9f..9fd31864 100644
--- a/Alc/effects/echo.c
+++ b/Alc/effects/echo.c
@@ -104,13 +104,11 @@ static ALvoid ALechoState_update(ALechoState *state, const ALCdevice *Device, co
 
     /* First tap panning */
     CalcXYZCoeffs(-lrpan, 0.0f, 0.0f, coeffs);
-    ComputePanningGains(Device->Dry.AmbiCoeffs, Device->Dry.NumChannels,
-                        Device->Dry.CoeffCount, coeffs, gain, state->Gain[0]);
+    ComputePanningGains(Device->Dry, coeffs, gain, state->Gain[0]);
 
     /* Second tap panning */
     CalcXYZCoeffs( lrpan, 0.0f, 0.0f, coeffs);
-    ComputePanningGains(Device->Dry.AmbiCoeffs, Device->Dry.NumChannels,
-                        Device->Dry.CoeffCount, coeffs, gain, state->Gain[1]);
+    ComputePanningGains(Device->Dry, coeffs, gain, state->Gain[1]);
 }
 
 static ALvoid ALechoState_process(ALechoState *state, ALuint SamplesToDo, const ALfloat (*restrict SamplesIn)[BUFFERSIZE], ALfloat (*restrict SamplesOut)[BUFFERSIZE], ALuint NumChannels)