From bdf16bf601ed1cedc652af62029d4cbd91e90c09 Mon Sep 17 00:00:00 2001
From: Chris Robinson <chris.kcat@gmail.com>
Date: Tue, 18 Dec 2007 15:10:21 -0800
Subject: [PATCH] Add initial auxiliary send paths

---
 Alc/ALu.c                   | 23 +++++++++++++++++------
 OpenAL32/Include/alSource.h |  6 ++++++
 2 files changed, 23 insertions(+), 6 deletions(-)

diff --git a/Alc/ALu.c b/Alc/ALu.c
index b65070a8..061f87a1 100644
--- a/Alc/ALu.c
+++ b/Alc/ALu.c
@@ -378,6 +378,14 @@ static ALvoid CalcSourceParams(ALCcontext *ALContext, ALsource *ALSource,
                 break;
         }
 
+        switch(ALSource->Send[0].WetFilter.filter)
+        {
+            case AL_FILTER_LOWPASS:
+                WetMix *= ALSource->Send[0].WetFilter.Gain;
+                WetGainHF *= ALSource->Send[0].WetFilter.GainHF;
+                break;
+        }
+
         if(ALSource->AirAbsorptionFactor > 0.0f)
             DryGainHF *= pow(ALSource->AirAbsorptionFactor * AIRABSORBGAINHF,
                              Distance * MetersPerUnit);
@@ -576,12 +584,15 @@ ALvoid aluMixData(ALCcontext *ALContext,ALvoid *buffer,ALsizei size,ALenum forma
                                 DryBuffer[j][2] += value*DrySend[2];
                                 DryBuffer[j][3] += value*DrySend[3];
 
-                                //Room path final mix buffer and panning
-                                value = aluComputeWetSample(ALSource, WetGainHF, sample);
-                                WetBuffer[j][0] += value*WetSend[0];
-                                WetBuffer[j][1] += value*WetSend[1];
-                                WetBuffer[j][2] += value*WetSend[2];
-                                WetBuffer[j][3] += value*WetSend[3];
+                                if(ALSource->Send[0].Slot.effectslot)
+                                {
+                                    //Room path final mix buffer and panning
+                                    value = aluComputeWetSample(ALSource, WetGainHF, sample);
+                                    WetBuffer[j][0] += value*WetSend[0];
+                                    WetBuffer[j][1] += value*WetSend[1];
+                                    WetBuffer[j][2] += value*WetSend[2];
+                                    WetBuffer[j][3] += value*WetSend[3];
+                                }
                             }
                             else
                             {
diff --git a/OpenAL32/Include/alSource.h b/OpenAL32/Include/alSource.h
index 38b0094d..1ada61df 100644
--- a/OpenAL32/Include/alSource.h
+++ b/OpenAL32/Include/alSource.h
@@ -4,6 +4,7 @@
 #define AL_NUM_SOURCE_PARAMS    128
 
 #include "alFilter.h"
+#include "alAuxEffectSlot.h"
 #include "AL/al.h"
 
 #define AL_DIRECT_FILTER                                   0x20005
@@ -62,6 +63,11 @@ typedef struct ALsource_struct
 
     ALfilter DirectFilter;
 
+    struct {
+        ALeffectslot Slot;
+        ALfilter WetFilter;
+    } Send[1];
+
     ALfloat LastDrySample;
     ALfloat LastWetSample;
 
-- 
2.11.4.GIT