v1.28

Readme.txt

@@ -1,6 +1,6 @@
 ================================================================
 
-Copyright © 1996-2012, Valve Corporation, All rights reserved.
+Copyright © 1996-2014, Valve Corporation, All rights reserved.
 
 ================================================================
 
@@ -11,6 +11,15 @@ website at: http://partner.steamgames.com
 
 Revision History:
 
+----------------------------------------------------------------
+v1.28 28th January 2014
+----------------------------------------------------------------
+
+* Added Steamworks Virtual Reality API via steamvr.h.
+* Added ISteamUtils::IsSteamRunningInVRMode, which returns true if the Steam Client is running in VR mode.
+* Deprecated ISteamGameserver::GetGameplayStats and ISteamGameserver::GetServerReputation. These calls already return no data and will be removed in a future SDK update.
+* Added result code k_EResultRateLimitExceeded, which can now be returned if a user has too many outstanding friend requests.
+
 ----------------------------------------------------------------
 v1.26a 14th November 2013
 ----------------------------------------------------------------

SteamworksExample/GameEngine.h

@@ -37,6 +37,9 @@ typedef int HGAMEVOICECHANNEL;
 #define VOICE_OUTPUT_SAMPLE_RATE_IDEAL		11025
 #define BYTES_PER_SAMPLE					2
 
+// used for VR support
+namespace vr { class IHmd; }
+
 //
 // Interface that needs to be implemented for game engines on all platforms
 //

SteamworksExample/Main.cpp

@@ -78,7 +78,7 @@ extern "C" void __cdecl SteamAPIDebugTextHook( int nSeverity, const char *pchDeb
 //-----------------------------------------------------------------------------
 // Purpose: Extracts some feature from the command line
 //-----------------------------------------------------------------------------
-void ParseCommandLine( const char *pchCmdLine, const char **ppchServerAddress, const char **ppchLobbyID )
+void ParseCommandLine( const char *pchCmdLine, const char **ppchServerAddress, const char **ppchLobbyID, bool *pbUseVR )
 {
 	// Look for the +connect ipaddress:port parameter in the command line,
 	// Steam will pass this when a user has used the Steam Server browser to find
@@ -102,6 +102,12 @@ void ParseCommandLine( const char *pchCmdLine, const char **ppchServerAddress, c
 		// Address should be right after the +connect, +1 on the end to skip the space
 		*ppchLobbyID = pchCmdLine + ( pchConnectLobby - pchCmdLine ) + strlen( pchConnectLobbyParam ) + 1;
 	}
+
+	// look for -vr on command line. Switch to VR mode if it's thre
+	const char *pchVRParam = "-vr";
+	const char *pchVR = strstr( pchCmdLine, pchVRParam );
+	if ( pchVR )
+		*pbUseVR = true;
 }
 
 
@@ -221,16 +227,20 @@ static int RealMain( const char *pchCmdLine, HINSTANCE hInstance, int nCmdShow )
 #endif
 	SteamController()->Init( rgchFullPath );
 
+	bool bUseVR = false;
 	const char *pchServerAddress, *pchLobbyID;
-	ParseCommandLine( pchCmdLine, &pchServerAddress, &pchLobbyID );
+	ParseCommandLine( pchCmdLine, &pchServerAddress, &pchLobbyID, &bUseVR );
+
 	// do a DRM self check
 	Steamworks_SelfCheck();
 
+	// init VR before we make the window
+
 	// Construct a new instance of the game engine 
 	// bugbug jmccaskey - make screen resolution dynamic, maybe take it on command line?
 	IGameEngine *pGameEngine = 
 #if defined(_WIN32)
-        new CGameEngineWin32( hInstance, nCmdShow, 1024, 768 );
+        new CGameEngineWin32( hInstance, nCmdShow, 1024, 768, bUseVR );
 #elif defined(OSX)
         CreateGameEngineOSX();
 #elif defined(SDL)

SteamworksExample/SpaceWarClient.cpp

@@ -762,8 +762,9 @@ void CSpaceWarClient::OnGameJoinRequested( GameRichPresenceJoinRequested_t *pCal
 {
 	// parse out the connect 
 	const char *pchServerAddress, *pchLobbyID;
-	extern void ParseCommandLine( const char *pchCmdLine, const char **ppchServerAddress, const char **ppchLobbyID );
-	ParseCommandLine( pCallback->m_rgchConnect, &pchServerAddress, &pchLobbyID );
+	bool bUseVR = false;
+	extern void ParseCommandLine( const char *pchCmdLine, const char **ppchServerAddress, const char **ppchLobbyID, bool *pbUseVR );
+	ParseCommandLine( pCallback->m_rgchConnect, &pchServerAddress, &pchLobbyID, &bUseVR );
 
 	// exec
 	ExecCommandLineConnect( pchServerAddress, pchLobbyID );

public/steam/isteamclient.h

@@ -240,6 +240,7 @@ enum { k_iClientRemoteClientManagerCallbacks = 3300 };
 enum { k_iClientUGCCallbacks = 3400 };
 enum { k_iSteamStreamClientCallbacks = 3500 };
 enum { k_IClientProductBuilderCallbacks = 3600 };
+enum { k_iClientShortcutsCallbacks = 3700 };
 
 
 //-----------------------------------------------------------------------------
@@ -248,21 +249,18 @@ enum { k_IClientProductBuilderCallbacks = 3600 };
 // Do not change any of these. 
 //-----------------------------------------------------------------------------
 
-class CSteamCallback
+struct SteamCallback_t
 {
 public:
-	virtual const char *GetCallbackName() const = 0;
-	virtual uint32 GetCallbackID() const = 0;
-	virtual uint8 *GetFixedData() const = 0;
-	virtual uint32 GetFixedSize() const = 0;
-	virtual uint32 GetNumMemberVariables() const = 0;
-	virtual bool GetMemberVariable( uint32 index, uint32 &varOffset, uint32 &varSize, uint32 &varCount, const char **pszName, const char **pszType  ) const = 0;
+	SteamCallback_t() {}
 };
 
 #define DEFINE_CALLBACK( callbackname, callbackid ) \
-struct callbackname##_t { \
+struct callbackname : SteamCallback_t { \
 	enum { k_iCallback = callbackid }; \
-	static callbackname##_t *GetNullPointer() { return 0; }
+	static callbackname *GetNullPointer() { return 0; } \
+	static const char *GetCallbackName() { return #callbackname; } \
+	static uint32  GetCallbackID() { return callbackname::k_iCallback; }
 
 #define CALLBACK_MEMBER( varidx, vartype, varname ) \
 	public: vartype varname ; \
@@ -281,64 +279,60 @@ struct callbackname##_t { \
 	*pszName = #varname; *pszType = #vartype; }
 
 
-#define END_CALLBACK_INTERNAL_BEGIN( callbackname, numvars )  }; \
-class C##callbackname : public CSteamCallback { \
-public: callbackname##_t m_Data; \
-	C##callbackname () { memset( &m_Data, 0, sizeof(m_Data) ); } \
-	virtual const char *GetCallbackName() const { return #callbackname; } \
-	virtual uint32  GetCallbackID() const { return callbackname##_t::k_iCallback; } \
-	virtual uint32  GetFixedSize() const { return sizeof( m_Data ); } \
-	virtual uint8  *GetFixedData() const { return (uint8*)&m_Data; } \
-	virtual uint32  GetNumMemberVariables() const { return numvars; } \
-	virtual bool    GetMemberVariable( uint32 index, uint32 &varOffset, uint32 &varSize,  uint32 &varCount, const char **pszName, const char **pszType ) const { \
+#define END_CALLBACK_INTERNAL_BEGIN( numvars )  \
+	static uint32  GetNumMemberVariables() { return numvars; } \
+	static bool    GetMemberVariable( uint32 index, uint32 &varOffset, uint32 &varSize,  uint32 &varCount, const char **pszName, const char **pszType ) { \
 	switch ( index ) { default : return false;
 
 
-#define END_CALLBACK_INTERNAL_SWITCH( varidx ) case varidx : m_Data.GetMemberVar_##varidx( varOffset, varSize, varCount, pszName, pszType ); return true;
+#define END_CALLBACK_INTERNAL_SWITCH( varidx ) case varidx : GetMemberVar_##varidx( varOffset, varSize, varCount, pszName, pszType ); return true;
 
-#define END_CALLBACK_INTERNAL_END() }; }; };
+#define END_CALLBACK_INTERNAL_END() }; } };
 
-#define END_DEFINE_CALLBACK_0( callbackname )  }; \
-class C##callbackname : public CSteamCallback { \
-public: callbackname##_t m_Data; \
-	virtual const char *GetCallbackName() const { return #callbackname; } \
-	virtual uint32  GetCallbackID() const { return callbackname##_t::k_iCallback; } \
-	virtual uint32  GetFixedSize() const { return sizeof( m_Data ); } \
-	virtual uint8  *GetFixedData() const { return (uint8*)&m_Data; } \
-	virtual uint32  GetNumMemberVariables() const { return 0; } \
-	virtual bool    GetMemberVariable( uint32 index, uint32 &varOffset, uint32 &varSize,  uint32 &varCount, const char **pszName, const char **pszType ) const { return false; } \
-	}; \
+#define END_DEFINE_CALLBACK_0() \
+	static uint32  GetNumMemberVariables() { return 0; } \
+	static bool    GetMemberVariable( uint32 index, uint32 &varOffset, uint32 &varSize,  uint32 &varCount, const char **pszName, const char **pszType ) { return false; } \
+	};
 	
 
-#define END_DEFINE_CALLBACK_1( callbackname ) \
-	END_CALLBACK_INTERNAL_BEGIN( callbackname, 1 ) \
+#define END_DEFINE_CALLBACK_1() \
+	END_CALLBACK_INTERNAL_BEGIN( 1 ) \
 	END_CALLBACK_INTERNAL_SWITCH( 0 ) \
 	END_CALLBACK_INTERNAL_END()
 
-#define END_DEFINE_CALLBACK_2( callbackname ) \
-	END_CALLBACK_INTERNAL_BEGIN( callbackname, 2 ) \
+#define END_DEFINE_CALLBACK_2() \
+	END_CALLBACK_INTERNAL_BEGIN( 2 ) \
 	END_CALLBACK_INTERNAL_SWITCH( 0 ) \
 	END_CALLBACK_INTERNAL_SWITCH( 1 ) \
 	END_CALLBACK_INTERNAL_END()
 
-#define END_DEFINE_CALLBACK_3( callbackname ) \
-	END_CALLBACK_INTERNAL_BEGIN( callbackname, 3 ) \
+#define END_DEFINE_CALLBACK_3() \
+	END_CALLBACK_INTERNAL_BEGIN( 3 ) \
 	END_CALLBACK_INTERNAL_SWITCH( 0 ) \
 	END_CALLBACK_INTERNAL_SWITCH( 1 ) \
 	END_CALLBACK_INTERNAL_SWITCH( 2 ) \
 	END_CALLBACK_INTERNAL_END()
 
-#define END_DEFINE_CALLBACK_4( callbackname ) \
-	END_CALLBACK_INTERNAL_BEGIN( callbackname, 4 ) \
+#define END_DEFINE_CALLBACK_4() \
+	END_CALLBACK_INTERNAL_BEGIN( 4 ) \
 	END_CALLBACK_INTERNAL_SWITCH( 0 ) \
 	END_CALLBACK_INTERNAL_SWITCH( 1 ) \
 	END_CALLBACK_INTERNAL_SWITCH( 2 ) \
 	END_CALLBACK_INTERNAL_SWITCH( 3 ) \
 	END_CALLBACK_INTERNAL_END()
 
+#define END_DEFINE_CALLBACK_5() \
+	END_CALLBACK_INTERNAL_BEGIN( 4 ) \
+	END_CALLBACK_INTERNAL_SWITCH( 0 ) \
+	END_CALLBACK_INTERNAL_SWITCH( 1 ) \
+	END_CALLBACK_INTERNAL_SWITCH( 2 ) \
+	END_CALLBACK_INTERNAL_SWITCH( 3 ) \
+	END_CALLBACK_INTERNAL_SWITCH( 4 ) \
+	END_CALLBACK_INTERNAL_END()
 
-#define END_DEFINE_CALLBACK_6( callbackname ) \
-	END_CALLBACK_INTERNAL_BEGIN( callbackname, 6 ) \
+
+#define END_DEFINE_CALLBACK_6() \
+	END_CALLBACK_INTERNAL_BEGIN( 6 ) \
 	END_CALLBACK_INTERNAL_SWITCH( 0 ) \
 	END_CALLBACK_INTERNAL_SWITCH( 1 ) \
 	END_CALLBACK_INTERNAL_SWITCH( 2 ) \
@@ -347,8 +341,8 @@ public: callbackname##_t m_Data; \
 	END_CALLBACK_INTERNAL_SWITCH( 5 ) \
 	END_CALLBACK_INTERNAL_END()
 
-#define END_DEFINE_CALLBACK_7( callbackname ) \
-	END_CALLBACK_INTERNAL_BEGIN( callbackname, 7 ) \
+#define END_DEFINE_CALLBACK_7() \
+	END_CALLBACK_INTERNAL_BEGIN( 7 ) \
 	END_CALLBACK_INTERNAL_SWITCH( 0 ) \
 	END_CALLBACK_INTERNAL_SWITCH( 1 ) \
 	END_CALLBACK_INTERNAL_SWITCH( 2 ) \
@@ -358,4 +352,29 @@ public: callbackname##_t m_Data; \
 	END_CALLBACK_INTERNAL_SWITCH( 6 ) \
 	END_CALLBACK_INTERNAL_END()
 
+#define END_DEFINE_CALLBACK_8() \
+	END_CALLBACK_INTERNAL_BEGIN( 7 ) \
+	END_CALLBACK_INTERNAL_SWITCH( 0 ) \
+	END_CALLBACK_INTERNAL_SWITCH( 1 ) \
+	END_CALLBACK_INTERNAL_SWITCH( 2 ) \
+	END_CALLBACK_INTERNAL_SWITCH( 3 ) \
+	END_CALLBACK_INTERNAL_SWITCH( 4 ) \
+	END_CALLBACK_INTERNAL_SWITCH( 5 ) \
+	END_CALLBACK_INTERNAL_SWITCH( 6 ) \
+	END_CALLBACK_INTERNAL_SWITCH( 7 ) \
+	END_CALLBACK_INTERNAL_END()
+
+#define END_DEFINE_CALLBACK_9() \
+	END_CALLBACK_INTERNAL_BEGIN( 7 ) \
+	END_CALLBACK_INTERNAL_SWITCH( 0 ) \
+	END_CALLBACK_INTERNAL_SWITCH( 1 ) \
+	END_CALLBACK_INTERNAL_SWITCH( 2 ) \
+	END_CALLBACK_INTERNAL_SWITCH( 3 ) \
+	END_CALLBACK_INTERNAL_SWITCH( 4 ) \
+	END_CALLBACK_INTERNAL_SWITCH( 5 ) \
+	END_CALLBACK_INTERNAL_SWITCH( 6 ) \
+	END_CALLBACK_INTERNAL_SWITCH( 7 ) \
+	END_CALLBACK_INTERNAL_SWITCH( 8 ) \
+	END_CALLBACK_INTERNAL_END()
+
 #endif // ISTEAMCLIENT_H

public/steam/isteamgameserver.h

@@ -192,15 +192,10 @@ public:
 	// returns false if we're not connected to the steam servers and thus cannot ask
 	virtual bool RequestUserGroupStatus( CSteamID steamIDUser, CSteamID steamIDGroup ) = 0;
 
-//
-// Query steam for server data
-//
 
-	// Ask for the gameplay stats for the server. Results returned in a callback
+	// these two functions s are deprecated, and will not return results
+	// they will be removed in a future version of the SDK
 	virtual void GetGameplayStats( ) = 0;
-
-	// Gets the reputation score for the game server. This API also checks if the server or some
-	// other server on the same IP is banned from the Steam master servers.
 	virtual SteamAPICall_t GetServerReputation( ) = 0;
 
 	// Returns the public IP of the server according to Steam, useful when the server is 

public/steam/isteamuser.h

@@ -97,7 +97,7 @@ public:
 	// levels of speech are detected.
 	// nUncompressedVoiceDesiredSampleRate is necessary to know the number of bytes to return in pcbUncompressed - can be set to 0 if you don't need uncompressed (the usual case)
 	// If you're upgrading from an older Steamworks API, you'll want to pass in 11025 to nUncompressedVoiceDesiredSampleRate
-	virtual EVoiceResult GetAvailableVoice(uint32 *pcbCompressed, uint32 *pcbUncompressed, uint32 nUncompressedVoiceDesiredSampleRate) = 0;
+	virtual EVoiceResult GetAvailableVoice( uint32 *pcbCompressed, uint32 *pcbUncompressed, uint32 nUncompressedVoiceDesiredSampleRate ) = 0;
 
 	// Gets the latest voice data from the microphone. Compressed data is an arbitrary format, and is meant to be handed back to 
 	// DecompressVoice() for playback later as a binary blob. Uncompressed data is 16-bit, signed integer, 11025Hz PCM format.

public/steam/isteamutils.h

@@ -157,6 +157,9 @@ public:
 
 	// returns the language the steam client is running in, you probably want ISteamApps::GetCurrentGameLanguage instead, this is for very special usage cases
 	virtual const char *GetSteamUILanguage() = 0;
+
+	// returns true if Steam itself is running in VR mode
+	virtual bool IsSteamRunningInVR() = 0;
 };
 
 #define STEAMUTILS_INTERFACE_VERSION "SteamUtils006"

public/steam/steamclientpublic.h

@@ -108,6 +108,7 @@ enum EResult
 	k_EResultInvalidCEGSubmission = 81,			// The set of files submitted to the CEG server are not valid !
 	k_EResultRestrictedDevice = 82,				// The device being used is not allowed to perform this action
 	k_EResultRegionLocked = 83,					// The action could not be complete because it is region restricted
+	k_EResultRateLimitExceeded = 84,			// Temporary rate limit exceeded, try again later, different from k_EResultLimitExceeded which may be permanent
 };
 
 // Error codes for use with the voice functions

public/steam/steamvr.h

@@ -0,0 +1,232 @@
+#pragma once
+
+#include <stdint.h>
+
+namespace vr
+{
+
+#if defined(__linux__) || defined(__APPLE__) 
+	// The 32-bit version of gcc has the alignment requirement for uint64 and double set to
+	// 4 meaning that even with #pragma pack(8) these types will only be four-byte aligned.
+	// The 64-bit version of gcc has the alignment requirement for these types set to
+	// 8 meaning that unless we use #pragma pack(4) our structures will get bigger.
+	// The 64-bit structure packing has to match the 32-bit structure packing for each platform.
+#pragma pack( push, 4 )
+#else
+#pragma pack( push, 8 )
+#endif
+
+
+// right-handed system
+// +y is up
+// +x is to the right
+// -z is going away from you
+// Distance unit is  meters
+struct HmdMatrix34_t
+{
+	float m[3][4];
+};
+
+struct HmdMatrix44_t
+{
+	float m[4][4];
+};
+
+
+/** Used to return the post-distortion UVs for each color channel. 
+* UVs range from 0 to 1 with 0,0 in the upper left corner of the 
+* source render target. The 0,0 to 1,1 range covers a single eye. */
+struct DistortionCoordinates_t
+{
+	float rfRed[2];
+	float rfGreen[2];
+	float rfBlue[2];
+};
+
+
+enum Hmd_Eye
+{
+	Eye_Left = 0,
+	Eye_Right = 1
+};
+
+enum GraphicsAPIConvention
+{
+	API_DirectX = 0, // Normalized Z goes from 0 at the viewer to 1 at the far clip plane
+	API_OpenGL = 1,  // Normalized Z goes from 1 at the viewer to -1 at the far clip plane
+};
+
+enum HmdTrackingResult
+{
+	TrackingResult_Uninitialized			= 1,
+
+	TrackingResult_Calibrating_InProgress	= 100,
+	TrackingResult_Calibrating_OutOfRange	= 101,
+
+	TrackingResult_Running_OK				= 200,
+	TrackingResult_Running_OutOfRange		= 201,
+};
+
+class IHmd
+{
+public:
+
+
+	// ------------------------------------
+	// Display Methods
+	// ------------------------------------
+
+	/** Size and position that the window needs to be on the VR display. */
+	virtual bool GetWindowBounds( int32_t *pnX, int32_t *pnY, uint32_t *pnWidth, uint32_t *pnHeight ) = 0;
+
+	/** Suggested size for the intermediate render target that the distortion pulls from. */
+	virtual void GetRecommendedRenderTargetSize( uint32_t *pnWidth, uint32_t *pnHeight ) = 0;
+
+	/** Gets the viewport in the frame buffer to draw the output of the disortion into */
+	virtual void GetEyeOutputViewport( Hmd_Eye eEye, GraphicsAPIConvention eAPIType, uint32_t *pnX, uint32_t *pnY, uint32_t *pnWidth, uint32_t *pnHeight ) = 0;
+	
+	/** The projection matrix for the specified eye */
+	virtual HmdMatrix44_t GetProjectionMatrix( Hmd_Eye eEye, float fNearZ, float fFarZ, GraphicsAPIConvention eProjType ) = 0;
+
+	/** The components necessary to build your own projection matrix in case your
+	* application is doing something fancy like infinite Z */
+	virtual void GetProjectionRaw( Hmd_Eye eEye, float *pfLeft, float *pfRight, float *pfTop, float *pfBottom ) = 0;
+
+	/** Returns the result of the distortion function for the specified eye and input UVs. UVs go from 0,0 in 
+	* the upper left of that eye's viewport and 1,1 in the lower right of that eye's viewport. */
+	virtual DistortionCoordinates_t ComputeDistortion( Hmd_Eye eEye, float fU, float fV ) = 0;
+
+	/** Returns the transform between the view space and eye space. Eye space is the per-eye flavor of view
+	* space that provides stereo disparity. Instead of Model * View * Projection the model is Model * View * Eye * Projection. 
+	* Normally View and Eye will be multiplied together and treated as View in your application. 
+	*/
+	virtual HmdMatrix44_t GetEyeMatrix( Hmd_Eye eEye ) = 0;
+
+	/** For use in simple VR apps, this method returns the concatenation of the 
+	* tracking pose and the eye matrix to get a full view matrix for each eye.
+	* This is ( GetEyeMatrix() ) * (GetWorldFromHeadPose() ^ -1 )  */
+	virtual bool GetViewMatrix( float fSecondsFromNow, HmdMatrix44_t *pMatLeftView, HmdMatrix44_t *pMatRightView, HmdTrackingResult *peResult ) = 0;
+
+	/** [D3D9 Only]
+	* Returns the adapter index that the user should pass into CreateDevice to set up D3D9 in such
+	* a way that it can go full screen exclusive on the HMD. Returns -1 if there was an error.
+	*/
+	virtual int32_t GetD3D9AdapterIndex() = 0;
+
+	// ------------------------------------
+	// Tracking Methods
+	// ------------------------------------
+
+	/** The pose that the tracker thinks that the HMD will be in at the specified
+	* number of seconds into the future. Pass 0 to get the current state. 
+	*
+	* This is roughly analagous to the inverse of the view matrix in most applications, though 
+	* many games will need to do some additional rotation or translation on top of the rotation
+	* and translation provided by the head pose.
+	*
+	* If this function returns true the pose has been populated with a pose that can be used by the application.
+	* Check peResult for details about the pose, including messages that should be displayed to the user.
+	*/
+	virtual bool GetWorldFromHeadPose( float fPredictedSecondsFromNow, HmdMatrix34_t *pmPose, HmdTrackingResult *peResult ) = 0;
+
+	/** Passes back the pose matrix from the last successful call to GetWorldFromHeadPose(). Returns true if that matrix is 
+	* valid (because there has been a previous successful pose.) */
+	virtual bool GetLastWorldFromHeadPose( HmdMatrix34_t *pmPose ) = 0;
+
+	/** Returns true if the tracker for this HMD will drift the Yaw component of its pose over time regardless of
+	* actual head motion. This is true for gyro-based trackers with no ground truth. */
+	virtual bool WillDriftInYaw() = 0;
+
+	/** Sets the zero pose for the tracker coordinate system. After this call all WorldFromHead poses will be relative 
+	* to the pose whenever this was called. The new zero coordinate system will not change the fact that the Y axis is
+	* up in the real world, so the next pose returned from GetWorldFromHeadPose after a call to ZeroTracker may not be
+	* exactly an identity matrix. */
+	virtual void ZeroTracker() = 0;
+
+	// ------------------------------------
+	// Administrative methods
+	// ------------------------------------
+
+	/** The ID of the driver this HMD uses as a UTF-8 string. Returns the length of the ID in bytes. If 
+	* the buffer is not large enough to fit the ID an empty string will be returned. In general, 128 bytes
+	* will be enough to fit any ID. */
+	virtual uint32_t GetDriverId( char *pchBuffer, uint32_t unBufferLen ) = 0;
+
+	/** The ID of this display within its driver this HMD uses as a UTF-8 string. Returns the length of the ID in bytes. If 
+	* the buffer is not large enough to fit the ID an empty string will be returned. In general, 128 bytes
+	* will be enough to fit any ID. */
+	virtual uint32_t GetDisplayId( char *pchBuffer, uint32_t unBufferLen ) = 0;
+};
+
+static const char * const IHmd_Version = "IHmd_002";
+
+/** error codes returned by Vr_Init */
+enum HmdError
+{
+	HmdError_None = 0,
+
+	HmdError_Init_InstallationNotFound	= 100,
+	HmdError_Init_InstallationCorrupt	= 101,
+	HmdError_Init_VRClientDLLNotFound	= 102,
+	HmdError_Init_FileNotFound			= 103,
+	HmdError_Init_FactoryNotFound		= 104,
+	HmdError_Init_InterfaceNotFound		= 105,
+	HmdError_Init_InvalidInterface		= 106,
+	HmdError_Init_UserConfigDirectoryInvalid = 107,
+	HmdError_Init_HmdNotFound			= 108,
+	HmdError_Init_NotInitialized		= 109,
+
+	HmdError_Driver_Failed = 200,
+
+	HmdError_IPC_ServerInitFailed		= 300,
+	HmdError_IPC_ConnectFailed			= 301,
+	HmdError_IPC_SharedStateInitFailed	= 302,
+
+};
+
+
+// figure out how to import from the VR API dll
+#if defined(_WIN32)
+
+#ifdef VR_API_EXPORT
+#define VR_INTERFACE extern "C" __declspec( dllexport )
+#else
+#define VR_INTERFACE extern "C" __declspec( dllimport )
+#endif
+
+#elif defined(GNUC) || defined(COMPILER_GCC)
+
+#ifdef VR_API_EXPORT
+#define VR_INTERFACE extern "C" __attribute__((visibility("default")))
+#else
+#define VR_INTERFACE extern "C" 
+#endif
+
+#else
+#error "Unsupported Platform."
+#endif
+
+
+
+
+/** Finds the active installation of the VR API and initializes it. The priority for figuring 
+* out where to load vrclient from are:
+*  1. The convar "VR_OVERRIDE", which should contain an absolute path to the root of
+*     an vr API directory. 
+*  2. The pchVROverride argument. This should be an absolute path or a path relative to
+*     the current executable.
+*  3. The path "./vr" relative to the current executable's path.
+*
+* Each of these paths are to the "root" of the VR API install. That's the directory with 
+* the "drivers" directory and a platform (i.e. "win32") directory in it, not the directory with the DLL itself.
+*/
+VR_INTERFACE IHmd *VR_Init( HmdError *peError );
+
+/** unloads vrclient.dll. Any interface pointers from the interface are 
+* invalid after this point */
+VR_INTERFACE void VR_Shutdown( );
+
+#pragma pack( pop )
+
+
+}

steamworksexample/gameenginewin32.h

@@ -59,7 +59,7 @@ struct PointVertex_t
 	DWORD color;
 };
 
-// Vertex struct for textured quads
+// Vertex struct for textured quads in pixel space
 struct TexturedQuadVertex_t
 {
 	float x, y, z, rhw;
@@ -67,6 +67,14 @@ struct TexturedQuadVertex_t
 	float u, v; // texture coordinates
 };
 
+// Vertex struct for textured quads in 3D space
+struct Textured3DQuadVertex_t
+{
+	float x, y, z;
+	DWORD color;
+	float u, v; // texture coordinates
+};
+
 class CVoiceContext;
 
 // WndProc declaration
@@ -82,7 +90,7 @@ public:
 	static void RemoveInstanceFromHWNDMap( HWND hWnd );
 
 	// Constructor
-	CGameEngineWin32( HINSTANCE hInstance, int nShowCommand, int32 nWindowWidth, int32 nWindowHeight );
+	CGameEngineWin32( HINSTANCE hInstance, int nShowCommand, int32 nWindowWidth, int32 nWindowHeight, bool bUseVR );
 
 	// Destructor
 	~CGameEngineWin32() { Shutdown(); }
@@ -143,6 +151,24 @@ public:
 	// Flush any still cached quad buffers
 	bool BFlushQuadBuffer();
 
+	// Draw a textured rectangle with full 3D points
+	bool BDraw3DTexturedQuad( Textured3DQuadVertex_t vert[4], HGAMETEXTURE hTexture );
+
+	// Flush any still cached quad buffers
+	bool BFlush3DQuadBuffer();
+
+	// sets the texture as the 0th one to draw with
+	bool BSetTexture( HGAMETEXTURE hTexture  );
+
+	// sets the texture as a render target. 
+	bool BSetRenderTarget( HGAMETEXTURE hTexture );
+
+	// sets the render target back to the frame buffer
+	bool BUnsetRenderTarget();
+	
+	// make sure the texture is created on the device and ready to use
+	bool BReadyTexture( HGAMETEXTURE hTexture );
+
 	// Get the current state of a key
 	bool BIsKeyDown( DWORD dwVK );
 
@@ -177,6 +203,10 @@ public:
 	void RecordKeyUp( DWORD dwVK );
 
 private:
+	// Create a new texture returning our internal handle value for it (0 means failure)
+	HGAMETEXTURE HCreateTextureInternal( byte *pRGBAData, uint32 uWidth, uint32 uHeight, D3DFORMAT eFormat );
+
+
 	// Creates the hwnd for the game
 	bool BCreateGameWindow( int nShowCommand );
 
@@ -213,6 +243,8 @@ private:
 	// Handle reseting the d3d device (ie, acquire resources again)
 	bool BHandleResetDevice();
 
+	// Loads the VR distortion shader off disk
+	bool BInitializeVRShader();
 
 private:
 	// Tracks whether the engine is ready for use
@@ -221,6 +253,9 @@ private:
 	// Tracks if we are shutting down
 	bool m_bShuttingDown;
 
+	// if this is not NULL we are in VR mode
+	vr::IHmd *m_pVRHmd;
+
 	// Color we clear the background of the window to each frame
 	DWORD m_dwBackgroundColor;
 
@@ -236,6 +271,9 @@ private:
 	// IDirect3DDevice9 interface
 	IDirect3DDevice9 *m_pD3D9Device;
 
+	// Depth/stencil surface associated with the back buffer
+	IDirect3DSurface9 *m_pBackbufferDepth;
+
 	// Size of the window to display the game in
 	int32 m_nWindowWidth;
 	int32 m_nWindowHeight;
@@ -270,9 +308,17 @@ private:
 		uint32 m_uWidth;
 		uint32 m_uHeight;
 		LPDIRECT3DTEXTURE9 m_pTexture;
+		LPDIRECT3DSURFACE9 m_pDepthSurface; // render targets only
+		D3DFORMAT m_eFormat;
 	};
 	std::map<HGAMETEXTURE, TextureData_t> m_MapTextures;
 
+	// the render target we draw the 2D game into for VR
+	HGAMETEXTURE m_hVR2DRenderTarget;
+
+	// the render target we draw the 3D scene into for VR
+	HGAMETEXTURE m_hVRSceneRenderTarget;
+
 	// Vertex buffer for textured quads
 	HGAMEVERTBUF m_hQuadBuffer;
 
@@ -288,6 +334,21 @@ private:
 	// Where does the current batch begin
 	DWORD m_dwQuadBufferBatchPos;
 
+	// Vertex buffer for textured quads
+	HGAMEVERTBUF m_h3DQuadBuffer;
+
+	// Last texture used in drawing a batched quad
+	HGAMETEXTURE m_h3DLastTexture;
+
+	// Pointer to quad 3D vertex data
+	Textured3DQuadVertex_t *m_p3DQuadVertexes;
+
+	// How many 3D quads are awaiting flushing
+	DWORD m_dw3DQuadsToFlush;
+
+	// Where does the current 3D batch begin
+	DWORD m_dw3DQuadBufferBatchPos;
+
 	// White texture used when drawing filled quads
 	HGAMETEXTURE m_hTextureWhite;
 
@@ -348,6 +409,12 @@ private:
 	// Map of font handles to font objects
 	std::map<HGAMEVOICECHANNEL, CVoiceContext* > m_MapVoiceChannel;
 	uint32 m_unVoiceChannelCount;
+
+	// Pixel shader for VR distortion correction
+	IDirect3DPixelShader9* m_pVRDistortionPixelShader;
+
+	// the distortion map used by the VR distortion pixel shader (one per eye)
+	HGAMETEXTURE m_hVRDistortionMap[2];
 };
 
 #endif // GAMEENGINEWIN32_H

steamworksexample/shaders/D3D9VRDistort.ps

@@ -0,0 +1,39 @@
+float c_rg_to_rb_ratio = 0.522;
+
+sampler2D BaseTextureSampler : register(s0);
+sampler2D DistortMapTextureSampler : register(s1);
+
+struct Fullscreen_Quad_Vert {
+	float4 position : SV_POSITION;
+	float2 texcoord: TEXCOORD0;
+	float4 color : COLOR;
+};
+
+struct Distort_Out
+{
+	float4 color: COLOR;
+};
+
+Distort_Out PS(Fullscreen_Quad_Vert input)
+{
+	float2 vOriginal = input.texcoord;
+
+	float4 vRead = tex2D( DistortMapTextureSampler, vOriginal );
+
+	float2 vGreen;
+	vGreen.r = ( vRead.x + vRead.z ) / 2;
+	vGreen.g = ( vRead.y + vRead.w ) / 2;
+
+	float4 vFinal;
+	vFinal.r = tex2D( BaseTextureSampler, vRead.xy ).r;
+	vFinal.ga = tex2D( BaseTextureSampler, vGreen ).ga;
+	vFinal.b = tex2D( BaseTextureSampler, vRead.zw ).b;
+	
+	float fBoundsCheck = saturate( dot( (vGreen.xy < float2(0.05,0.05)), float2(1,1)) + dot( (vGreen.xy > float2(0.95,0.95)), float2(1,1)) );
+	vFinal.xyz = lerp( vFinal.xyz, float3(0,0,0), fBoundsCheck );
+
+	Distort_Out o;
+	o.color = vFinal;
+	return o;
+}
+

steamworksexample/shaders/compile9vrdistort.bat

@@ -0,0 +1 @@
+fxc /E PS /T ps_3_0 /O3 /Gfa /Fo ..\D3D9VRDistort.cso D3D9VRDistort.ps

tools/ContentBuilder/scripts/depot_build_1001.vdf

@@ -1,15 +1,31 @@
 "DepotBuildConfig"
 {
-  "DepotID" "1001"
+	// Set your assigned depot ID here
+	"DepotID" "1001"
+
+	// Set a root for all content.
+	// All relative paths specified below (LocalPath in FileMapping entries, and FileExclusion paths)
+	// will be resolved relative to this root.
+	// If you don't define ContentRoot, then it will be assumed to be
+	// the location of this script file, which probably isn't what you want
+	"ContentRoot"	"D:\MyGame\rel\master\"
 
 	// include all files recursivley
   "FileMapping"
   {
+  	// This can be a full path, or a path relative to ContentRoot
     "LocalPath" "*"
+    
+    // This is a path relative to the install folder of your game
     "DepotPath" "."
+    
+    // If LocalPath contains wildcards, setting this means that all
+    // matching files within subdirectories of LocalPath will also
+    // be included.
     "recursive" "1"
   }
 
 	// but exclude all symbol files  
+	// This can be a full path, or a path relative to ContentRoot
   "FileExclusion" "*.pdb"
-}
+}