Add a comment about CoeffCount being 0

1 files changed, 3 insertions, 1 deletions

diff --git a/OpenAL32/Include/alMain.h b/OpenAL32/Include/alMain.h
index e3f272df..e818245b 100644
--- a/OpenAL32/Include/alMain.h
+++ b/OpenAL32/Include/alMain.h
@@ -594,7 +594,9 @@ struct ALCdevice_struct
             BFChannelConfig Map[MAX_OUTPUT_CHANNELS];
         } Ambi;
         /* Number of coefficients in each ChannelConfig to mix together (4 for
-         * first-order, 9 for second-order, etc).
+         * first-order, 9 for second-order, etc). If the count is 0, the
+         * BFChannelConfig is used instead to map each output to a coefficient
+         * index.
          */
         ALuint CoeffCount;