More work. Audio driver works enough to play music now.

GpD3D/GpMutex_Win32.cpp

@@ -0,0 +1,42 @@
+#include "GpMutex_Win32.h"
+
+#include "GpWindows.h"
+
+#include <stdlib.h>
+#include <new>
+
+void GpMutex_Win32::Destroy()
+{
+	this->~GpMutex_Win32();
+	free(this);
+}
+
+void GpMutex_Win32::Lock()
+{
+	EnterCriticalSection(&m_critSection);
+}
+
+void GpMutex_Win32::Unlock()
+{
+	LeaveCriticalSection(&m_critSection);
+}
+
+
+GpMutex_Win32 *GpMutex_Win32::Create()
+{
+	void *storage = malloc(sizeof(GpMutex_Win32));
+	if (!storage)
+		return nullptr;
+
+	return new (storage) GpMutex_Win32();
+}
+
+GpMutex_Win32::GpMutex_Win32()
+{
+	InitializeCriticalSection(&m_critSection);
+}
+
+GpMutex_Win32::~GpMutex_Win32()
+{
+	DeleteCriticalSection(&m_critSection);
+}