diff --git a/linux_sdk/x86-64/Makefile.shaderapiempty b/linux_sdk/x86-64/Makefile.shaderapiempty
index f2e05177..9cbcb3cd 100644
--- a/linux_sdk/x86-64/Makefile.shaderapiempty
+++ b/linux_sdk/x86-64/Makefile.shaderapiempty
@@ -16,7 +16,7 @@ SHADER_OBJ_DIR = $(BUILD_OBJ_DIR)/materialsystem/$(NAME)
 
 INCLUDEDIRS = -I$(PUBLIC_SRC_DIR) -I$(MAT_SRC_DIR) -I$(MAT_PUBLIC_SRC_DIR) \
 	-I $(SHADERAPI_PUBLIC_SRC_DIR) -I$(TIER0_PUBLIC_SRC_DIR) -I$(TIER1_PUBLIC_SRC_DIR)
-LDFLAGS_SHADER = -lm -ldl libtier0.$(SHLIBEXT) libvstdlib.$(SHLIBEXT) \
+LDFLAGS_SHADER = -lm -ldl libtier0$(SHLIBSUFFIX).$(SHLIBEXT) libvstdlib$(SHLIBSUFFIX).$(SHLIBEXT) \
 	$(LIB_DIR)/tier1.a $(LIB_DIR)/interfaces.a
 
 DO_CC = $(CPLUS) $(INCLUDEDIRS) -DARCH=$(ARCH)
@@ -34,22 +34,22 @@ DO_CC += -o $@ -c $<
 SHADER_OBJS= \
 	$(SHADER_OBJ_DIR)/shaderapiempty.o \
 
-all: dirs $(NAME).$(SHLIBEXT)
+all: dirs $(NAME)$(SHLIBSUFFIX).$(SHLIBEXT)
 
 dirs:
 	-mkdir -p $(BUILD_OBJ_DIR)
 	-mkdir -p $(SHADER_OBJ_DIR)
 
-$(NAME).$(SHLIBEXT): $(SHADER_OBJS)
+$(NAME)$(SHLIBSUFFIX).$(SHLIBEXT): $(SHADER_OBJS)
 	$(CPLUS) $(SHLIBLDFLAGS) -o $(BUILD_DIR)/$@ $(SHADER_OBJS) $(LDFLAGS_SHADER) $(CPP_LIB)
 
 $(SHADER_OBJ_DIR)/%.o: $(SHADER_SRC_DIR)/%.cpp
 	$(DO_CC)
 
 install:
-	cp -f $(NAME).$(SHLIBEXT) $(LIB_DIR)/$(NAME).$(SHLIBEXT)
+	cp -f $(NAME)$(SHLIBSUFFIX).$(SHLIBEXT) $(LIB_DIR)/$(NAME)$(SHLIBSUFFIX).$(SHLIBEXT)
 
 clean:
 	-rm -rf $(SHADER_OBJ_DIR)
-	-rm -rf $(NAME).$(SHLIBEXT)
+	-rm -rf $(NAME)$(SHLIBSUFFIX).$(SHLIBEXT)
 
diff --git a/materialsystem/shaderapiempty/shaderapiempty.cpp b/materialsystem/shaderapiempty/shaderapiempty.cpp
index 42dab583..b6f012bb 100644
--- a/materialsystem/shaderapiempty/shaderapiempty.cpp
+++ b/materialsystem/shaderapiempty/shaderapiempty.cpp
@@ -572,6 +572,12 @@ public:
 	virtual void BeginGeneratingCSMs();
 	virtual void EndGeneratingCSMs();
 	virtual void PerpareForCascadeDraw( int, float, float );
+	virtual bool GetCSMAccurateBlending() const;
+	virtual void SetCSMAccurateBlending( bool bEnable );
+	virtual bool SupportsResolveDepth() const;
+	virtual bool HasFullResolutionDepthTexture() const;
+	virtual int NumBooleanPixelShaderConstants() const;
+	virtual int NumIntegerPixelShaderConstants() const;
 private:
 	enum
 	{
@@ -3217,3 +3223,34 @@ void CShaderAPIEmpty::PerpareForCascadeDraw( int, float, float )
 {
 
 }
+
+bool CShaderAPIEmpty::GetCSMAccurateBlending() const
+{
+	return false;
+}
+
+void CShaderAPIEmpty::SetCSMAccurateBlending( bool bEnable )
+{
+
+}
+
+bool CShaderAPIEmpty::SupportsResolveDepth() const
+{
+	return false;
+}
+
+bool CShaderAPIEmpty::HasFullResolutionDepthTexture() const
+{
+	return false;
+}
+
+int CShaderAPIEmpty::NumBooleanPixelShaderConstants() const
+{
+	return 0;
+}
+
+int CShaderAPIEmpty::NumIntegerPixelShaderConstants() const
+{
+	return 0;
+}
+
diff --git a/public/appframework/ilaunchermgr.h b/public/appframework/ilaunchermgr.h
index 66f697f0..f8fce722 100644
--- a/public/appframework/ilaunchermgr.h
+++ b/public/appframework/ilaunchermgr.h
@@ -33,6 +33,7 @@ class CShowPixelsParams;
 #if defined(DEDICATED)
 typedef void *PseudoGLContextPtr;
 class GLMRendererInfoFields;
+class SDL_Cursor;
 #endif
 
 #endif // DX_TO_GL_ABSTRACTION
@@ -47,7 +48,7 @@ class ILauncherMgr : public IAppSystem
 {
 public:
 	// Create the window.
-	virtual bool CreateGameWindow( const char *pTitle, bool bWindowed, int width, int height ) = 0;
+	virtual bool CreateGameWindow( const char *pTitle, bool bWindowed, int width, int height, bool bUnknown ) = 0;
 
 #if defined( DX_TO_GL_ABSTRACTION )
 	virtual void GetDesiredPixelFormatAttribsAndRendererInfo( uint **ptrOut, uint *countOut, GLMRendererInfoFields *rendInfoOut ) = 0;
@@ -60,13 +61,12 @@ public:
 
 	// Set the mouse cursor position.
 	virtual void SetCursorPosition( int x, int y ) = 0;
-	virtual void GetCursorPosition( int *x, int *y ) = 0;
 
 #if defined( DX_TO_GL_ABSTRACTION )
 	virtual void ShowPixels( CShowPixelsParams *params ) = 0;
 #endif
 
-	virtual void SetWindowFullScreen( bool bFullScreen, int nWidth, int nHeight ) = 0;
+	virtual void SetWindowFullScreen( bool bFullScreen, int nWidth, int nHeight, bool bUnknown ) = 0;
 	virtual bool IsWindowFullScreen() = 0;
 	virtual void MoveWindow( int x, int y ) = 0;
 	virtual void SizeWindow( int width, int tall ) = 0;
@@ -87,14 +87,8 @@ public:
 
 	virtual void WaitUntilUserInput( int msSleepTime ) = 0;
 
-	// Loads a cursor defined in a file
-	virtual InputCursorHandle_t LoadCursorFromFile( const char *pFileName ) = 0;
-	virtual void FreeCursor( InputCursorHandle_t hCursor ) = 0;
-	// Sets the cursor icon
-	virtual void SetCursorIcon( InputCursorHandle_t hCursor ) = 0;
-
 #if defined( DX_TO_GL_ABSTRACTION )
-	virtual PseudoGLContextPtr	GetMainContext() = 0;
+	virtual PseudoGLContextPtr GetMainContext() = 0;
 	virtual PseudoGLContextPtr CreateExtraContext() = 0;
 	virtual void DeleteContext( PseudoGLContextPtr hContext ) = 0;
 	virtual bool MakeContextCurrent( PseudoGLContextPtr hContext ) = 0;
@@ -105,11 +99,31 @@ public:
 	virtual void *GetWindowRef() = 0;
 
 	virtual void SetMouseVisible( bool bState ) = 0;
+
+	virtual int GetActiveDisplayIndex() = 0;
+
+	virtual void SetMouseCursor(SDL_Cursor *pCursor) = 0;
+
 	virtual void SetForbidMouseGrab( bool bForbidMouseGrab ) = 0;
 
-	virtual void SetGammaRamp( const uint16 *pRed, const uint16 *pGreen, const uint16 *pBlue ) = 0;
+	virtual void OnFrameRendered() = 0;
+
+	virtual void ForceSystemCursorVisible() = 0;
+	virtual void UnforceSystemCursorVisible() = 0;
 
 	virtual double GetPrevGLSwapWindowTime() = 0;
+
+	virtual void GetCursorPosition( int *x, int *y ) = 0;
+
+	// Loads a cursor defined in a file
+	virtual InputCursorHandle_t LoadCursorFromFile( const char *pFileName ) = 0;
+
+	virtual void FreeCursor( InputCursorHandle_t hCursor ) = 0;
+
+	// Sets the cursor icon
+	virtual void SetCursorIcon( InputCursorHandle_t hCursor ) = 0;
+
+	virtual void SetGammaRamp( const uint16 *pRed, const uint16 *pGreen, const uint16 *pBlue ) = 0;
 };
 
 extern ILauncherMgr *g_pLauncherMgr;
diff --git a/public/materialsystem/imaterialsystemhardwareconfig.h b/public/materialsystem/imaterialsystemhardwareconfig.h
index 992edd30..2898e3b7 100644
--- a/public/materialsystem/imaterialsystemhardwareconfig.h
+++ b/public/materialsystem/imaterialsystemhardwareconfig.h
@@ -218,6 +218,19 @@ public:
 	virtual CSMQualityMode_t GetCSMQuality() const = 0;
 	virtual bool SupportsBilinearPCFSampling() const = 0;
 	virtual CSMShaderMode_t GetCSMShaderMode( CSMQualityMode_t nQualityLevel ) const = 0;
+
+	virtual bool GetCSMAccurateBlending() const = 0;
+	virtual void SetCSMAccurateBlending( bool bEnable ) = 0;
+
+	virtual bool SupportsResolveDepth() const = 0;
+	virtual bool HasFullResolutionDepthTexture() const = 0;
+	virtual const char *GetHWSpecificShaderDLLName() const = 0;
+	virtual bool HasStencilBuffer() const = 0;
+
+	virtual int NumBooleanVertexShaderConstants() const = 0;
+	virtual int NumIntegerVertexShaderConstants() const = 0;
+	virtual int NumBooleanPixelShaderConstants() const = 0;
+	virtual int NumIntegerPixelShaderConstants() const = 0;
 };
 
 #endif // IMATERIALSYSTEMHARDWARECONFIG_H
diff --git a/public/tier1/utlmemory.h b/public/tier1/utlmemory.h
index 601e722d..934f2ee0 100644
--- a/public/tier1/utlmemory.h
+++ b/public/tier1/utlmemory.h
@@ -17,6 +17,7 @@
 #include "tier0/dbg.h"
 #include <string.h>
 #include "tier0/platform.h"
+#include "mathlib/mathlib.h"
 
 #include "tier0/memalloc.h"
 #include "tier0/memdbgon.h"