Duplicate stereo onto the side channels as well as the back

1 files changed, 4 insertions, 1 deletions

diff --git a/Alc/ALu.c b/Alc/ALu.c
index 8835a2d3..70570666 100644
--- a/Alc/ALu.c
+++ b/Alc/ALu.c
@@ -1109,7 +1109,10 @@ ALvoid aluMixData(ALCcontext *ALContext,ALvoid *buffer,ALsizei size,ALenum forma
                             DryBuffer[j][FRONT_RIGHT] += samp2*DrySend[FRONT_RIGHT];
                             if(DuplicateStereo)
                             {
-                                //Duplicate stereo channels on the back speakers
+                                //Duplicate stereo channels on the side and
+                                //back speakers
+                                DryBuffer[j][SIDE_LEFT] += samp1*DrySend[SIDE_LEFT];
+                                DryBuffer[j][SIDE_RIGHT] += samp2*DrySend[SIDE_RIGHT];
                                 DryBuffer[j][BACK_LEFT] += samp1*DrySend[BACK_LEFT];
                                 DryBuffer[j][BACK_RIGHT] += samp2*DrySend[BACK_RIGHT];
                             }