Updated the SDK with the latest code from the TF and HL2 branches

* Adds support for Visual Studio 2012 and 2013
* VR Mode:
. Switches from headtrack.dll to sourcevr.dll
. Improved readability of the UI in VR
. Removed the IPD calibration tool. TF2 will now obey the Oculus
configuration file. Use the Oculus calibration tool in your SDK or
install and run "OpenVR" under Tools in Steam to calibrate your IPD.
. Added dropdown to enable VR mode in the Video options. Removed the -vr
command line option.
. Added the ability to switch in and out of VR mode without quitting the
game
. By default VR mode will run full screen. To switch back to a
borderless window set the vr_force_windowed convar.
. Added support for VR mode on Linux
* Many assorted bug fixes and other changes from Team Fortress in
various shared files

1 files changed, 168 insertions, 0 deletions

diff --git a/mp/src/public/sourcevr/isourcevirtualreality.h b/mp/src/public/sourcevr/isourcevirtualreality.h
new file mode 100644
index 00000000..3e438455
--- /dev/null
+++ b/mp/src/public/sourcevr/isourcevirtualreality.h
@@ -0,0 +1,168 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: Contains the IHeadTrack interface, which is implemented in headtrack.dll
+//
+// $NoKeywords: $
+//
+//===========================================================================//
+
+#ifndef ISOURCEVIRTUALREALITY_H
+#define ISOURCEVIRTUALREALITY_H
+
+#ifdef _WIN32
+#pragma once
+#endif
+
+#include "tier1/interface.h"
+#include "tier1/refcount.h"
+#include "appframework/IAppSystem.h"
+#include "mathlib/vmatrix.h"
+
+//-----------------------------------------------------------------------------
+// forward declarations
+//-----------------------------------------------------------------------------
+class ITexture;
+class IMaterialSystem;
+
+//-----------------------------------------------------------------------------
+// important enumeration
+//-----------------------------------------------------------------------------
+
+struct VRRect_t
+{
+	int32 nX;
+	int32 nY;
+	int32 nWidth;
+	int32 nHeight;
+};
+
+
+// NOTE NOTE NOTE!!!!  If you up this, grep for "NEW_INTERFACE" to see if there is anything
+// waiting to be enabled during an interface revision.
+#define SOURCE_VIRTUAL_REALITY_INTERFACE_VERSION "SourceVirtualReality001"
+
+//-----------------------------------------------------------------------------
+// The ISourceVirtualReality interface
+//-----------------------------------------------------------------------------
+
+
+
+abstract_class ISourceVirtualReality : public IAppSystem
+{
+public:
+	virtual ~ISourceVirtualReality() {}
+
+	// Placeholder for API revision
+	virtual bool Connect( CreateInterfaceFn factory ) = 0;
+	virtual void Disconnect() = 0;
+	virtual void *QueryInterface( const char *pInterfaceName ) = 0;
+	virtual InitReturnVal_t Init() = 0;
+	virtual void Shutdown() = 0;
+
+	// This enum is used to tell some of the other calls in this interface which eye
+	// is being requested.
+	enum VREye
+	{
+		VREye_Left = 0,
+		VREye_Right
+	};
+
+	// Which texture is being requested in GetRenderTarget?
+	enum EWhichRenderTarget
+	{
+		RT_Color = 0,
+		RT_Depth,
+	};
+
+
+	// ----------------------------------------------------------------------
+	// General utilities
+	// ----------------------------------------------------------------------
+
+	// Returns true if the game should run in VR mode
+	virtual bool ShouldRunInVR() = 0;
+
+	// Returns true if there is a compatible HMD connected 
+	virtual bool IsHmdConnected() = 0;
+
+	// The size and position of the viewport for the specified eye
+	virtual void GetViewportBounds( VREye eEye, int *pnX, int *pnY, int *pnWidth, int *pnHeight ) = 0;
+
+	// Performs the distortion post-processing.
+	virtual bool DoDistortionProcessing ( VREye eEye ) = 0;
+
+	// Composites the HUD directly onto the backbuffer / render target, including undistort.
+	virtual bool CompositeHud ( VREye eEye, float ndcHudBounds[4], bool bDoUndistort, bool bBlackout, bool bTranslucent ) = 0;
+
+	// ----------------------------------------------------------------------
+	// Getting the current pose
+	// ----------------------------------------------------------------------
+
+	// returns the pose relative to the zero point
+	virtual VMatrix GetMideyePose() = 0;
+
+	// All-in-one interfaces (they call GetCameraPoseZeroFromCurrent)
+	// Grabs the current tracking data and sets up state for the Override* calls.
+	virtual bool SampleTrackingState ( float PlayerGameFov, float fPredictionSeconds ) = 0;
+
+	// ----------------------------------------------------------------------
+	// Information about the display
+	// ----------------------------------------------------------------------
+
+	// Passes back the bounds of the window that the game should create. This might
+	// span two displays if we're dealing with a two-input display. Returns true
+	// if the bounds were set.
+	virtual bool GetDisplayBounds( VRRect_t *pRect ) = 0;
+
+	// Computes and returns the projection matrix for the eye
+	virtual bool GetEyeProjectionMatrix ( VMatrix *pResult, VREye, float zNear, float zFar, float fovScale ) = 0;
+
+	// Returns the transform from the mid-eye to the specified eye. Multiply this by 
+	// the tweaked (for mouse rotation and WASD translation) mideye position to get the
+	// view matrix. This matrix takes the user's IPD into account.
+	virtual VMatrix GetMidEyeFromEye( VREye eEye ) = 0;
+
+	// returns the adapter index to use for VR mode
+	virtual int GetVRModeAdapter() = 0;
+
+	// ----------------------------------------------------------------------
+	// Information about the tracker
+	// ----------------------------------------------------------------------
+
+	virtual bool WillDriftInYaw() = 0;
+
+	// ----------------------------------------------------------------------
+	// Methods about oversized offscreen rendering
+	// ----------------------------------------------------------------------
+
+	// Sets up the pre-distortion render targets.
+	virtual void CreateRenderTargets( IMaterialSystem *pMaterialSystem ) = 0;
+	virtual void ShutdownRenderTargets() = 0;
+
+	// fetches the render target for the specified eye
+	virtual ITexture *GetRenderTarget( VREye eEye, EWhichRenderTarget eWhich ) = 0;
+
+	// Returns the (possibly overridden) framebuffer size for render target sizing.
+	virtual void				GetRenderTargetFrameBufferDimensions( int & nWidth, int & nHeight ) = 0;
+
+	// ----------------------------------------------------------------------
+	// Enter/leave VR mode
+	// ----------------------------------------------------------------------
+	virtual bool Activate() = 0;
+	virtual void Deactivate() = 0;
+
+
+};
+
+
+
+//-----------------------------------------------------------------------------
+
+extern ISourceVirtualReality *g_pSourceVR;
+
+inline bool UseVR()
+{
+	return g_pSourceVR != NULL && g_pSourceVR->ShouldRunInVR();
+}
+
+#endif // ISOURCEVIRTUALREALITY_H