diff --git a/win32/CDirect3D.cpp b/win32/CDirect3D.cpp
index affa54b1..e60a2bc9 100644
--- a/win32/CDirect3D.cpp
+++ b/win32/CDirect3D.cpp
@@ -176,7 +176,7 @@
 
 #pragma comment( lib, "d3d9" )
 #pragma comment( lib, "d3dx9" )
-#pragma comment( lib, "DxErr9" )
+#pragma comment( lib, "DxErr" )
 
 #include "cdirect3d.h"
 #include "win32_display.h"
diff --git a/win32/win32.cpp b/win32/win32.cpp
index 2fc2709c..cb09edf5 100644
--- a/win32/win32.cpp
+++ b/win32/win32.cpp
@@ -203,8 +203,10 @@
 
 #include <math.h>
 
-BYTE *ScreenBuf1 = NULL;
+BYTE *ScreenBuf = NULL;
+BYTE *ScreenBufBlend = NULL;
 BYTE *ScreenBuffer = NULL;
+BYTE *ScreenBufferBlend = NULL;
 
 struct SJoyState Joystick [16];
 uint32 joypads [8];
@@ -976,14 +978,17 @@ void InitSnes9X( void)
 	extern void S9xPostRomInit();
 	Memory.PostRomInitFunc = S9xPostRomInit;
 
-    ScreenBuf1 = new BYTE [EXT_PITCH * EXT_HEIGHT];
+    ScreenBuf = new BYTE [EXT_PITCH * EXT_HEIGHT];
+	ScreenBufBlend = new BYTE [EXT_PITCH * EXT_HEIGHT];
 
-    ScreenBuffer = ScreenBuf1 + EXT_OFFSET;
-    memset (ScreenBuf1, 0, EXT_PITCH * EXT_HEIGHT);
+    ScreenBuffer = ScreenBuf + EXT_OFFSET;
+	ScreenBufferBlend = ScreenBufBlend + EXT_OFFSET;
+    memset (ScreenBuf, 0, EXT_PITCH * EXT_HEIGHT);
+	memset (ScreenBufBlend, 0, EXT_PITCH * EXT_HEIGHT);
 
     GFX.Pitch = EXT_PITCH;
     GFX.RealPPL = EXT_PITCH;
-    GFX.Screen = (uint16*)(ScreenBuf1 + EXT_OFFSET);
+	GFX.Screen = (uint16*)(ScreenBuffer);
 
 	InitializeCriticalSection(&GUI.SoundCritSect);
 	CoInitializeEx(NULL, COINIT_APARTMENTTHREADED);
@@ -1001,8 +1006,10 @@ void InitSnes9X( void)
 }
 void DeinitS9x()
 {
-	if(ScreenBuf1)
-		delete [] ScreenBuf1;
+	if(ScreenBuf)
+		delete [] ScreenBuf;
+	if(ScreenBufBlend)
+		delete [] ScreenBufBlend;
 	DeleteCriticalSection(&GUI.SoundCritSect);
 	CoUninitialize();
 	if(GUI.GunSight)
diff --git a/win32/win32_display.cpp b/win32/win32_display.cpp
index c04ab18d..45c55272 100644
--- a/win32/win32_display.cpp
+++ b/win32/win32_display.cpp
@@ -197,6 +197,7 @@ CDirect3D Direct3D;
 CDirectDraw DirectDraw;
 COpenGL OpenGL;
 SSurface Src = {0};
+extern BYTE *ScreenBufferBlend;
 
 // Interface used to access the display output
 IS9xDisplayOutput *S9xDisplayOutput=&Direct3D;
@@ -216,11 +217,20 @@ repeats the last rendered frame
 */
 void WinRefreshDisplay(void)
 {
+	if(!Src.Width)
+		return;
+
 	SelectRenderMethod ();
-	if(Src.Surface!=NULL) {
-		S9xDisplayOutput->Render(Src);
-		GUI.FlipCounter++;
+
+	Src.Surface = (BYTE *)GFX.Screen;
+
+	if(Src.Width > SNES_WIDTH && GUI.BlendHiRes) {
+		RenderMergeHires(Src.Surface,ScreenBufferBlend,Src.Pitch,Src.Width,Src.Height);
+		Src.Surface = ScreenBufferBlend;
 	}
+
+	S9xDisplayOutput->Render(Src);
+	GUI.FlipCounter++;
 }
 
 void WinChangeWindowSize(unsigned int newWidth, unsigned int newHeight)
@@ -368,16 +378,9 @@ bool8 S9xDeinitUpdate (int Width, int Height)
     Src.Pitch = GFX.Pitch;
     Src.Surface = (BYTE*)GFX.Screen;
 
-	const int OrigHeight = Height;
-	Height = Src.Height;
-
 	// avi writing
 	DoAVIVideoFrame();
 
-	if(GUI.BlendHiRes) {
-		RenderMergeHires(Src.Surface,Src.Pitch,Src.Width,Src.Height);
-	}
-
 	// Clear some of the old SNES rendered image
 	// when the resolution becomes lower in x or y,
 	// otherwise the image processors (filters) might access
@@ -388,23 +391,23 @@ bool8 S9xDeinitUpdate (int Width, int Height)
 
         if (Width < LastWidth)
         {
-            const int hh = max(LastHeight, OrigHeight);
+            const int hh = max(LastHeight, Height);
             for (int i = 0; i < hh; i++)
                 memset (GFX.Screen + i * (GFX.Pitch>>1) + Width*1, 0, 4);
         }
-        if (OrigHeight < LastHeight)
+        if (Height < LastHeight)
 		{
             const int ww = max(LastWidth, Width);
-            for (int i = OrigHeight; i < LastHeight ; i++)
+            for (int i = Height; i < LastHeight ; i++)
                 memset (GFX.Screen + i * (GFX.Pitch>>1), 0, ww * 2);
 
 			// also old clear extended height stuff from drawing surface
-			if((int)Src.Height > OrigHeight)
-				for (int i = OrigHeight; i < (int)Src.Height ; i++)
+			if((int)Src.Height > Height)
+				for (int i = Height; i < (int)Src.Height ; i++)
 					memset (Src.Surface + i * Src.Pitch, 0, Src.Pitch);
 		}
         LastWidth = Width;
-        LastHeight = OrigHeight;
+        LastHeight = Height;
     }
 	
 	WinRefreshDisplay();
@@ -427,6 +430,31 @@ void S9xSetWinPixelFormat ()
 	S9xDisplayOutput->SetSnes9xColorFormat();
 }
 
+char *ReadShaderFileContents(const TCHAR *filename)
+{
+	HANDLE hFile;
+	DWORD size;
+	DWORD bytesRead;
+	char *contents;
+
+	hFile = CreateFile(filename, GENERIC_READ, FILE_SHARE_READ, NULL,
+				OPEN_EXISTING, FILE_FLAG_SEQUENTIAL_SCAN , 0);
+	if(hFile == INVALID_HANDLE_VALUE){
+		return NULL;
+	}
+	size = GetFileSize(hFile,NULL);
+	contents = new char[size+1];
+	if(!ReadFile(hFile,contents,size,&bytesRead,NULL)) {
+		CloseHandle(hFile);
+		delete[] contents;
+		return NULL;
+	}
+	CloseHandle(hFile);
+	contents[size] = '\0';
+	return contents;
+
+}
+
 // TODO: abstract the following functions in some way - only necessary for directdraw
 
 /* DirectDraw only begin */
diff --git a/win32/wsnes9x.h b/win32/wsnes9x.h
index 409deed2..19213774 100644
--- a/win32/wsnes9x.h
+++ b/win32/wsnes9x.h
@@ -316,8 +316,8 @@ struct sGUI {
 	bool LocalVidMem;
 	bool Vsync;	
 	bool shaderEnabled;
-	TCHAR HLSLshaderFileName[MAX_PATH];
-	TCHAR GLSLshaderFileName[MAX_PATH];
+	TCHAR D3DshaderFileName[MAX_PATH];
+	TCHAR OGLshaderFileName[MAX_PATH];
 
     bool IgnoreNextMouseMove;
     RECT window_size;