From ccd8cbc2a944a0822d1277b1524d05455564b0e5 Mon Sep 17 00:00:00 2001
From: Chris Robinson <chris.kcat@gmail.com>
Date: Sun, 11 Sep 2011 01:26:09 -0700
Subject: Make some listener properties volatile

---
 Alc/ALu.c                     | 16 +++++++++++-----
 OpenAL32/Include/alListener.h |  8 ++++----
 2 files changed, 15 insertions(+), 9 deletions(-)

diff --git a/Alc/ALu.c b/Alc/ALu.c
index 052a415a..3c80b7bc 100644
--- a/Alc/ALu.c
+++ b/Alc/ALu.c
@@ -378,9 +378,11 @@ ALvoid CalcSourceParams(ALsource *ALSource, const ALCcontext *ALContext)
     Frequency       = Device->Frequency;
 
     //Get listener properties
-    ListenerGain = ALContext->Listener.Gain;
-    MetersPerUnit = ALContext->Listener.MetersPerUnit;
-    memcpy(ListenerVel, ALContext->Listener.Velocity, sizeof(ALContext->Listener.Velocity));
+    ListenerGain   = ALContext->Listener.Gain;
+    MetersPerUnit  = ALContext->Listener.MetersPerUnit;
+    ListenerVel[0] = ALContext->Listener.Velocity[0];
+    ListenerVel[1] = ALContext->Listener.Velocity[1];
+    ListenerVel[2] = ALContext->Listener.Velocity[2];
 
     //Get source properties
     SourceVolume   = ALSource->flGain;
@@ -452,9 +454,13 @@ ALvoid CalcSourceParams(ALsource *ALSource, const ALCcontext *ALContext)
         ALfloat Matrix[4][4];
 
         // Build transform matrix
-        memcpy(N, ALContext->Listener.Forward, sizeof(N));  // At-vector
+        N[0] = ALContext->Listener.Forward[0];  // At-vector
+        N[1] = ALContext->Listener.Forward[1];
+        N[2] = ALContext->Listener.Forward[2];
         aluNormalize(N);  // Normalized At-vector
-        memcpy(V, ALContext->Listener.Up, sizeof(V));  // Up-vector
+        V[0] = ALContext->Listener.Up[0];  // Up-vector
+        V[1] = ALContext->Listener.Up[1];
+        V[2] = ALContext->Listener.Up[2];
         aluNormalize(V);  // Normalized Up-vector
         aluCrossproduct(N, V, U); // Right-vector
         aluNormalize(U);  // Normalized Right-vector
diff --git a/OpenAL32/Include/alListener.h b/OpenAL32/Include/alListener.h
index 2bda3197..0f399e5f 100644
--- a/OpenAL32/Include/alListener.h
+++ b/OpenAL32/Include/alListener.h
@@ -9,10 +9,10 @@ extern "C" {
 
 typedef struct ALlistener_struct
 {
-    ALfloat Position[3];
-    ALfloat Velocity[3];
-    ALfloat Forward[3];
-    ALfloat Up[3];
+    volatile ALfloat Position[3];
+    volatile ALfloat Velocity[3];
+    volatile ALfloat Forward[3];
+    volatile ALfloat Up[3];
     volatile ALfloat Gain;
     volatile ALfloat MetersPerUnit;
 } ALlistener;
-- 
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