Use a separate method to set initial HRTF coefficients

1 files changed, 17 insertions, 0 deletions

diff --git a/Alc/mixer_sse.c b/Alc/mixer_sse.c
index d86cf749..75f50f88 100644
--- a/Alc/mixer_sse.c
+++ b/Alc/mixer_sse.c
@@ -19,6 +19,23 @@
 #include "mixer_defs.h"
 
 
+static inline void SetupCoeffs(ALfloat (*restrict OutCoeffs)[2],
+                               const HrtfParams *hrtfparams,
+                               ALuint IrSize, ALuint Counter)
+{
+    const __m128 counter4 = _mm_set1_ps((float)Counter);
+    __m128 coeffs, step4;
+    ALuint i;
+
+    for(i = 0;i < IrSize;i += 2)
+    {
+        step4  = _mm_load_ps(&hrtfparams->CoeffStep[i][0]);
+        coeffs = _mm_load_ps(&hrtfparams->Coeffs[i][0]);
+        coeffs = _mm_sub_ps(coeffs, _mm_mul_ps(step4, counter4));
+        _mm_store_ps(&OutCoeffs[i][0], coeffs);
+    }
+}
+
 static inline void ApplyCoeffsStep(ALuint Offset, ALfloat (*restrict Values)[2],
                                    const ALuint IrSize,
                                    ALfloat (*restrict Coeffs)[2],