diff --git a/Cxbx.opt b/Cxbx.opt
index 3854948d6..11e8fe5bd 100644
Binary files a/Cxbx.opt and b/Cxbx.opt differ
diff --git a/Include/Cxbx.h b/Include/Cxbx.h
index 749acd44b..0b11d21c1 100644
--- a/Include/Cxbx.h
+++ b/Include/Cxbx.h
@@ -55,10 +55,10 @@ typedef signed short   sint16;
 typedef signed long    sint32;
 
 // define this to trace intercepted function calls
-//#define _DEBUG_TRACE
+#define _DEBUG_TRACE
 
 // define this to trace warnings
-//#define _DEBUG_WARNINGS
+#define _DEBUG_WARNINGS
 
 // version information
 #ifndef _DEBUG_TRACE
diff --git a/Include/Win32/CxbxKrnl/EmuD3D8.h b/Include/Win32/CxbxKrnl/EmuD3D8.h
index b18906390..89ea1c34d 100644
--- a/Include/Win32/CxbxKrnl/EmuD3D8.h
+++ b/Include/Win32/CxbxKrnl/EmuD3D8.h
@@ -382,6 +382,16 @@ HRESULT WINAPI EmuIDirect3DDevice8_EndVisibilityTest
     DWORD                       Index
 );
 
+// ******************************************************************
+// * func: EmuIDirect3DDevice8_GetVisibilityTestResult
+// ******************************************************************
+HRESULT WINAPI EmuIDirect3DDevice8_GetVisibilityTestResult
+(
+    DWORD                       Index,
+    UINT                       *pResult,
+    ULONGLONG                  *pTimeStamp
+);
+
 // ******************************************************************
 // * func: EmuIDirect3DDevice8_LoadVertexShader
 // ******************************************************************
diff --git a/Source/Win32/CxbxKrnl/EmuD3D8.cpp b/Source/Win32/CxbxKrnl/EmuD3D8.cpp
index 1abe8ccc3..ee3299254 100644
--- a/Source/Win32/CxbxKrnl/EmuD3D8.cpp
+++ b/Source/Win32/CxbxKrnl/EmuD3D8.cpp
@@ -953,6 +953,44 @@ HRESULT WINAPI XTL::EmuIDirect3DDevice8_EndVisibilityTest
     return D3D_OK;
 }
 
+// ******************************************************************
+// * func: EmuIDirect3DDevice8_GetVisibilityTestResult
+// ******************************************************************
+HRESULT WINAPI XTL::EmuIDirect3DDevice8_GetVisibilityTestResult
+(
+    DWORD                       Index,
+    UINT                       *pResult,
+    ULONGLONG                  *pTimeStamp
+)
+{
+    EmuSwapFS();   // Win2k/XP FS
+
+    // debug trace
+    #ifdef _DEBUG_TRACE
+    {
+        printf("EmuD3D8 (0x%X): EmuIDirect3DDevice8_GetVisibilityTestResult\n"
+               "(\n"
+               "   Index                     : 0x%.08X\n"
+               "   pResult                   : 0x%.08X\n"
+               "   pTimeStamp                : 0x%.08X\n"
+               ");\n",
+               GetCurrentThreadId(), Index, pResult, pTimeStamp);
+    }
+    #endif
+
+    // TODO: actually emulate this!?
+
+    if(pResult != 0)
+        *pResult = 0;
+
+    if(pTimeStamp != 0)
+        *pTimeStamp = 0;
+
+    EmuSwapFS();   // XBox FS
+
+    return D3D_OK;
+}
+
 // ******************************************************************
 // * func: EmuIDirect3DDevice8_GetDeviceCaps
 // ******************************************************************
diff --git a/Source/Win32/CxbxKrnl/HLEDataBase/D3D8.1.0.4627.inl b/Source/Win32/CxbxKrnl/HLEDataBase/D3D8.1.0.4627.inl
index ddb790950..c5ce21f17 100644
--- a/Source/Win32/CxbxKrnl/HLEDataBase/D3D8.1.0.4627.inl
+++ b/Source/Win32/CxbxKrnl/HLEDataBase/D3D8.1.0.4627.inl
@@ -156,6 +156,37 @@ SOOVPA<13> IDirect3DDevice8_EndVisibilityTest_1_0_4627 =
     }
 };
 
+// ******************************************************************
+// * IDirect3DDevice8_GetVisibilityTestResult
+// ******************************************************************
+SOOVPA<11> IDirect3DDevice8_GetVisibilityTestResult_1_0_4627 =
+{
+    0,  // Large == 0
+    11, // Count == 11
+
+    -1, // XRef Not Saved
+    0,  // XRef Not Used
+
+    {
+        // IDirect3DDevice8_GetVisibilityTestResult+0x0C : shr ecx, 8
+        { 0x0C, 0xC1 }, // (Offset,Value)-Pair #1
+        { 0x0D, 0xE9 }, // (Offset,Value)-Pair #2
+        { 0x0E, 0x08 }, // (Offset,Value)-Pair #3
+
+        // IDirect3DDevice8_GetVisibilityTestResult+0x0F : and eax, 0xFF
+        { 0x0F, 0x25 }, // (Offset,Value)-Pair #4
+        { 0x10, 0xFF }, // (Offset,Value)-Pair #5
+        { 0x11, 0x00 }, // (Offset,Value)-Pair #6
+
+        // IDirect3DDevice8_GetVisibilityTestResult+0x2B : mov eax, 0x88760828
+        { 0x2B, 0xB8 }, // (Offset,Value)-Pair #7
+        { 0x2C, 0x28 }, // (Offset,Value)-Pair #8
+        { 0x2D, 0x08 }, // (Offset,Value)-Pair #9
+        { 0x2E, 0x76 }, // (Offset,Value)-Pair #10
+        { 0x2F, 0x88 }, // (Offset,Value)-Pair #11
+    }
+};
+
 // ******************************************************************
 // * IDirect3D8_GetAdapterDisplayMode
 // ******************************************************************
@@ -1715,6 +1746,16 @@ OOVPATable D3D8_1_0_4627[] =
         "EmuIDirect3DDevice8_EndVisibilityTest" 
         #endif
     },
+    // IDirect3DDevice8::GetVisibilityTestResult
+    {
+        (OOVPA*)&IDirect3DDevice8_GetVisibilityTestResult_1_0_4627,
+
+        XTL::EmuIDirect3DDevice8_GetVisibilityTestResult,
+
+        #ifdef _DEBUG_TRACE
+        "EmuIDirect3DDevice8_GetVisibilityTestResult" 
+        #endif
+    },
     // IDirect3D8::GetAdapterModeCount (* unchanged since 4361 *)
     {
         (OOVPA*)&IDirect3D8_GetAdapterModeCount_1_0_4361,