in the middle of something..

Include/Cxbx.h

@@ -54,6 +54,9 @@ typedef signed char    sint08;
 typedef signed short   sint16;
 typedef signed long    sint32;
 
+// define this to track vertex buffers for debugging purposes
+#define _DEBUG_TRACK_VB
+
 // define this to trace intercepted function calls
 #define _DEBUG_TRACE
 

Include/Win32/CxbxKrnl/EmuD3D8/VertexBuffer.h

@@ -34,6 +34,40 @@
 #ifndef VERTEXBUFFER_H
 #define VERTEXBUFFER_H
 
+#include "Cxbx.h"
+
+#ifdef _DEBUG_TRACK_VB
+
+struct VBNode
+{
+	XTL::IDirect3DVertexBuffer8 *vb;
+	VBNode						*next;
+};
+
+extern class VBTracker
+{
+	public:
+		VBTracker() : m_head(0), m_tail(0) {}
+	   ~VBTracker();
+
+	    // insert a ptr
+		void insert(XTL::IDirect3DVertexBuffer8 *pVB);
+
+		// remove a ptr
+		void remove(XTL::IDirect3DVertexBuffer8 *pVB);
+
+		// check for existance of ptr
+		bool exists(XTL::IDirect3DVertexBuffer8 *pVB);
+
+	private:
+		// list of "live" vertex buffers for debugging purposes
+		VBNode *m_head;
+		VBNode *m_tail;
+}
+g_VBTrackTotal, g_VBTrackDisable;
+
+#endif
+
 // fixup xbox extensions to be compatible with PC direct3d
 extern UINT EmuFixupVerticesA
 (

Source/Win32/CxbxKrnl/EmuD3D8/VertexBuffer.cpp

@@ -45,6 +45,52 @@ namespace XTL
 
 extern XTL::LPDIRECT3DDEVICE8 g_pD3DDevice8;  // Direct3D8 Device
 
+#ifdef _DEBUG_TRACK_VB
+
+extern XTL::VBTracker g_VBTrack;
+
+XTL::VBTracker::~VBTracker()
+{
+	VBNode *cur = m_head;
+
+	while(cur != NULL)
+	{
+		free(cur);
+
+		cur = cur->next;
+	}
+}
+
+void XTL::VBTracker::insert(IDirect3DVertexBuffer8 *pVB)
+{
+	if(m_head == 0)
+	{
+		m_tail = m_head = new VBNode();
+		m_tail->vb = 0;
+		m_tail->next = 0;
+	}
+
+	m_tail->vb = pVB;
+
+	m_tail->next = new VBNode();
+	m_tail->next->vb = 0;
+	m_tail->next->next = 0;
+
+	return;
+}
+
+void XTL::VBTracker::remove(IDirect3DVertexBuffer8 *pVB)
+{
+	return;
+}
+
+bool XTL::VBTracker::exists(IDirect3DVertexBuffer8 *pVB)
+{
+	return false;
+}
+
+#endif // _DEBUG_TRACK_VB
+
 // fixup xbox extensions to be compatible with PC direct3d
 UINT XTL::EmuFixupVerticesA
 (