diff --git a/public/appframework/ilaunchermgr.h b/public/appframework/ilaunchermgr.h
new file mode 100644
index 00000000..431782a2
--- /dev/null
+++ b/public/appframework/ilaunchermgr.h
@@ -0,0 +1,162 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+//	ilaunchermgr.h
+//
+//==================================================================================================
+#ifndef ILAUNCHERMGR_H
+#define ILAUNCHERMGR_H
+
+#ifdef _WIN32
+#pragma once
+#endif
+
+#if defined( USE_SDL )
+
+#include "tier0/threadtools.h"
+#include "appframework/IAppSystem.h"
+
+#if defined( DX_TO_GL_ABSTRACTION )
+#if !defined(DEDICATED)
+#include "togl/linuxwin/glmgrbasics.h"
+#include "togl/linuxwin/glmdisplay.h"
+#endif
+
+class GLMDisplayDB;
+class CShowPixelsParams;
+
+#if defined(DEDICATED)
+typedef void *PseudoGLContextPtr;
+class GLMRendererInfoFields;
+#endif
+#endif
+
+// if you rev this version also update materialsystem/cmaterialsystem.cpp CMaterialSystem::Connect as it defines the string directly
+#define SDLMGR_INTERFACE_VERSION "SDLMgrInterface001"
+
+class CCocoaEvent;
+class CStackCrawlParams;
+
+typedef struct SDL_Cursor SDL_Cursor;
+
+class ILauncherMgr : public IAppSystem
+{
+public:
+	virtual bool Connect( CreateInterfaceFn factory ) = 0;
+	virtual void Disconnect() = 0;
+	
+	virtual void *QueryInterface( const char *pInterfaceName ) = 0;
+	
+	// Init, shutdown
+	virtual InitReturnVal_t Init() = 0;
+	virtual void Shutdown() = 0;
+	
+	// Create the window.
+	virtual bool CreateGameWindow( const char *pTitle, bool bWindowed, int width, int height ) = 0;
+	
+	virtual void IncWindowRefCount() = 0;
+	virtual void DecWindowRefCount() = 0;
+		
+	// Get the next N events. The function returns the number of events that were filled into your array.
+	virtual int GetEvents( CCocoaEvent *pEvents, int nMaxEventsToReturn, bool debugEvents = false ) = 0;
+#ifdef LINUX
+	virtual int PeekAndRemoveKeyboardEvents( bool *pbEsc, bool *pbReturn, bool *pbSpace, bool debugEvents = false ) = 0;
+#endif
+
+	// Set the mouse cursor position.
+	virtual void SetCursorPosition( int x, int y ) = 0;
+	
+	virtual void SetWindowFullScreen( bool bFullScreen, int nWidth, int nHeight ) = 0;
+	virtual bool IsWindowFullScreen() = 0;
+	virtual void MoveWindow( int x, int y ) = 0;
+	virtual void SizeWindow( int width, int tall ) = 0;
+	virtual void PumpWindowsMessageLoop() = 0;
+		
+	virtual void DestroyGameWindow() = 0;
+	virtual void SetApplicationIcon( const char *pchAppIconFile ) = 0;
+	
+	virtual void GetMouseDelta( int &x, int &y, bool bIgnoreNextMouseDelta = false ) = 0;
+
+	virtual void GetNativeDisplayInfo( int nDisplay, uint &nWidth, uint &nHeight, uint &nRefreshHz ) = 0; // Retrieve the size of the monitor (desktop)
+	virtual void RenderedSize( uint &width, uint &height, bool set ) = 0;	// either set or retrieve rendered size value (from dxabstract)
+	virtual void DisplayedSize( uint &width, uint &height ) = 0;			// query backbuffer size (window size whether FS or windowed)
+	
+#if defined( DX_TO_GL_ABSTRACTION )
+	virtual PseudoGLContextPtr	GetMainContext() = 0;
+	// Get the NSGLContext for a window's main view - note this is the carbon windowref as an argument
+	virtual PseudoGLContextPtr GetGLContextForWindow( void* windowref ) = 0;
+	virtual PseudoGLContextPtr CreateExtraContext() = 0;
+	virtual void DeleteContext( PseudoGLContextPtr hContext ) = 0;
+	virtual bool MakeContextCurrent( PseudoGLContextPtr hContext ) = 0;
+	virtual GLMDisplayDB *GetDisplayDB( void ) = 0;
+	virtual void GetDesiredPixelFormatAttribsAndRendererInfo( uint **ptrOut, uint *countOut, GLMRendererInfoFields *rendInfoOut ) = 0;
+	virtual void ShowPixels( CShowPixelsParams *params ) = 0;
+#endif
+
+	virtual void GetStackCrawl( CStackCrawlParams *params ) = 0;	
+	
+	virtual void WaitUntilUserInput( int msSleepTime ) = 0;
+	
+	virtual void *GetWindowRef() = 0;
+
+	virtual void SetMouseVisible( bool bState ) = 0;
+	virtual void SetMouseCursor( SDL_Cursor *hCursor ) = 0;
+	virtual void SetForbidMouseGrab( bool bForbidMouseGrab ) = 0;
+	virtual void OnFrameRendered() = 0;
+
+	virtual void SetGammaRamp( const uint16 *pRed, const uint16 *pGreen, const uint16 *pBlue ) = 0;
+
+	virtual double GetPrevGLSwapWindowTime() = 0;
+};
+
+extern ILauncherMgr *g_pLauncherMgr;
+
+enum CocoaEventType_t
+{
+	CocoaEvent_KeyDown,
+	CocoaEvent_KeyUp,
+	CocoaEvent_MouseButtonDown,
+	CocoaEvent_MouseMove,
+	CocoaEvent_MouseButtonUp,
+	CocoaEvent_AppActivate,
+	CocoaEvent_MouseScroll,
+	CocoaEvent_AppQuit,
+	CocoaEvent_Deleted, // Event was one of the above, but has been handled and should be ignored now.
+};
+
+// enum values need to match bit-shifting logic in CInputSystem::UpdateMouseButtonState and 
+// the codes from NSEvent pressedMouseButtons, turns out the two are in agreement right now
+enum CocoaMouseButton_t
+{
+	COCOABUTTON_LEFT = 1 << 0,
+	COCOABUTTON_RIGHT = 1 << 1,
+	COCOABUTTON_MIDDLE = 1 << 2,
+	COCOABUTTON_4 = 1 << 3,	
+	COCOABUTTON_5 = 1 << 4,	
+};
+
+enum ECocoaKeyModifier
+{
+	eCapsLockKey,
+	eShiftKey,
+	eControlKey,
+	eAltKey,		// aka option
+	eCommandKey
+};
+
+class CCocoaEvent
+{
+public:
+	CocoaEventType_t m_EventType;
+	int m_VirtualKeyCode;
+	wchar_t m_UnicodeKey;
+	wchar_t m_UnicodeKeyUnmodified;
+	uint m_ModifierKeyMask;		// 
+	int m_MousePos[2];
+	int m_MouseButtonFlags;	// Current state of the mouse buttons. See COCOABUTTON_xxxx.
+	uint m_nMouseClickCount;
+	int m_MouseButton; // which of the CocoaMouseButton_t buttons this is for from above
+};
+
+#endif // defined( USE_SDL )
+
+#endif // ILAUNCHERMGR_H
diff --git a/public/tier0/annotations.h b/public/tier0/annotations.h
new file mode 100644
index 00000000..ecc9dae7
--- /dev/null
+++ b/public/tier0/annotations.h
@@ -0,0 +1,84 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+#ifndef ANALYSIS_ANNOTATIONS_H
+#define ANALYSIS_ANNOTATIONS_H
+
+#if _MSC_VER >= 1600 // VS 2010 and above.
+//-----------------------------------------------------------------------------
+// Upgrading important helpful warnings to errors
+//-----------------------------------------------------------------------------
+#pragma warning(error : 4789 ) // warning C4789: destination of memory copy is too small
+
+// Suppress some code analysis warnings
+#ifdef _PREFAST_
+// Include the annotation header file.
+#include <sal.h>
+
+// For temporarily suppressing warnings -- the warnings are suppressed for the next source line.
+#define ANALYZE_SUPPRESS(wnum) __pragma(warning(suppress: wnum))
+#define ANALYZE_SUPPRESS2(wnum1, wnum2) __pragma(warning(supress: wnum1  wnum2))
+#define ANALYZE_SUPPRESS3(wnum1, wnum2, wnum3) __pragma(warning(suppress: wnum1 wnum2 wnum3))
+#define ANALYZE_SUPPRESS4(wnum1, wnum2, wnum3, wnum4) __pragma(warning(suppress: wnum1 wnum2 wnum3 wnum4))
+
+// Tag all printf style format strings with this
+#define PRINTF_FORMAT_STRING _Printf_format_string_
+#define SCANF_FORMAT_STRING _Scanf_format_string_impl_
+// Various macros for specifying the capacity of the buffer pointed
+// to by a function parameter. Variations include in/out/inout,
+// CAP (elements) versus BYTECAP (bytes), and null termination or
+// not (_Z).
+#define IN_Z _In_z_
+#define IN_CAP(x) _In_count_(x)
+#define IN_BYTECAP(x) _In_bytecount_(x)
+#define OUT_Z_CAP(x) _Out_z_cap_(x)
+#define OUT_CAP(x) _Out_cap_(x)
+#define OUT_CAP_C(x) _Out_cap_c_(x) // Output buffer with specified *constant* capacity in elements
+#define OUT_BYTECAP(x) _Out_bytecap_(x)
+#define OUT_Z_BYTECAP(x) _Out_z_bytecap_(x)
+#define INOUT_BYTECAP(x) _Inout_bytecap_(x)
+#define INOUT_Z_CAP(x) _Inout_z_cap_(x)
+#define INOUT_Z_BYTECAP(x) _Inout_z_bytecap_(x)
+// These macros are use for annotating array reference parameters, typically used in functions
+// such as V_strcpy_safe. Because they are array references the capacity is already known.
+#if _MSC_VER >= 1700
+#define IN_Z_ARRAY _Pre_z_
+#define OUT_Z_ARRAY _Post_z_
+#define INOUT_Z_ARRAY _Prepost_z_
+#else
+#define IN_Z_ARRAY _Deref_pre_z_
+#define OUT_Z_ARRAY _Deref_post_z_
+#define INOUT_Z_ARRAY _Deref_prepost_z_
+#endif // _MSC_VER >= 1700
+// Used for annotating functions to describe their return types.
+#define MUST_CHECK_RETURN _Check_return_
+// Use the macros above to annotate string functions that fill buffers as shown here,
+// in order to give VS's /analyze more opportunities to find bugs.
+// void V_wcsncpy( OUT_Z_BYTECAP(maxLenInBytes) wchar_t *pDest, wchar_t const *pSrc, int maxLenInBytes );
+// int V_snwprintf( OUT_Z_CAP(maxLenInCharacters) wchar_t *pDest, int maxLenInCharacters, PRINTF_FORMAT_STRING const wchar_t *pFormat, ... );
+
+#endif // _PREFAST_
+#endif // _MSC_VER >= 1600 // VS 2010 and above.
+
+#ifndef ANALYZE_SUPPRESS
+#define ANALYZE_SUPPRESS(wnum)
+#define ANALYZE_SUPPRESS2(wnum1, wnum2)
+#define ANALYZE_SUPPRESS3(wnum1, wnum2, wnum3)
+#define ANALYZE_SUPPRESS4(wnum1, wnum2, wnum3, wnum4)
+#define PRINTF_FORMAT_STRING
+#define SCANF_FORMAT_STRING
+#define IN_Z
+#define IN_CAP(x)
+#define IN_BYTECAP(x)
+#define OUT_Z_CAP(x)
+#define OUT_CAP(x)
+#define OUT_CAP_C(x)
+#define OUT_BYTECAP(x)
+#define OUT_Z_BYTECAP(x)
+#define INOUT_BYTECAP(x)
+#define INOUT_Z_CAP(x)
+#define INOUT_Z_BYTECAP(x)
+#define OUT_Z_ARRAY
+#define INOUT_Z_ARRAY
+#define MUST_CHECK_RETURN
+#endif
+
+#endif // ANALYSIS_ANNOTATIONS_H