Oculus VR DK2 Support

- Updated to work with 0.5.x SDK
- Uses Oculus Rendering rather than PostFX
- Stereo rendering refactored so more rendering info is grabbed from the DisplayDevice
- Implements an Offscreen Canvas for in-game gui with oculus
- Message dialogs and metrics display can now go to the OffScreen Canvas (if oculus demo is setup correctly)

Engine/source/T3D/gameBase/gameBase.h

@@ -39,6 +39,9 @@
 #include "scene/sceneManager.h"    
 #define __SCENEMANAGER_H__  
 #endif
+#ifndef _IDISPLAYDEVICE_H_
+#include "platform/output/IDisplayDevice.h"
+#endif
 
 class NetConnection;
 class ProcessList;
@@ -418,6 +421,7 @@ public:
    
    // Not implemented here, but should return the Camera to world transformation matrix
    virtual void getCameraTransform (F32 *pos, MatrixF *mat ) { *mat = MatrixF::Identity; }
+   virtual void getEyeCameraTransform ( IDisplayDevice *device, U32 eyeId, MatrixF *mat ) { *mat = MatrixF::Identity; }
 
    /// Returns the water object we are colliding with, it is up to derived
    /// classes to actually set this object.

Engine/source/T3D/gameBase/gameConnection.cpp

@@ -235,6 +235,7 @@ GameConnection::GameConnection()
 
 GameConnection::~GameConnection()
 {
+   setDisplayDevice(NULL);
    delete mAuthInfo;
    for(U32 i = 0; i < mConnectArgc; i++)
       dFree(mConnectArgv[i]);
@@ -673,6 +674,30 @@ bool GameConnection::getControlCameraTransform(F32 dt, MatrixF* mat)
    return true;
 }
 
+bool GameConnection::getControlCameraEyeTransforms(IDisplayDevice *display, MatrixF *transforms)
+{
+   GameBase* obj = getCameraObject();
+   if(!obj)
+      return false;
+
+   GameBase* cObj = obj;
+   while((cObj = cObj->getControlObject()) != 0)
+   {
+      if(cObj->useObjsEyePoint())
+         obj = cObj;
+   }
+
+   // Perform operation on left & right eyes. For each we need to calculate the world space 
+   // of the rotated eye offset and add that onto the camera world space.
+   for (U32 i=0; i<2; i++)
+   {
+      obj->getEyeCameraTransform(display, i, &transforms[i]);
+   }
+
+   return true;
+}
+
+
 bool GameConnection::getControlCameraDefaultFov(F32 * fov)
 {
    //find the last control object in the chain (client->player->turret->whatever...)

Engine/source/T3D/gameBase/gameConnection.h

@@ -269,6 +269,10 @@ public:
    bool getControlCameraTransform(F32 dt,MatrixF* mat);
    bool getControlCameraVelocity(Point3F *vel);
 
+   /// Returns the eye transforms for the control object, using supplemental information 
+   /// from the provided IDisplayDevice.
+   bool getControlCameraEyeTransforms(IDisplayDevice *display, MatrixF *transforms);
+   
    bool getControlCameraDefaultFov(F32 *fov);
    bool getControlCameraFov(F32 *fov);
    bool setControlCameraFov(F32 fov);
@@ -280,8 +284,8 @@ public:
    void setFirstPerson(bool firstPerson);
    
    bool hasDisplayDevice() const { return mDisplayDevice != NULL; }
-   const IDisplayDevice* getDisplayDevice() const { return mDisplayDevice; }
-   void setDisplayDevice(IDisplayDevice* display) { mDisplayDevice = display; }
+   IDisplayDevice* getDisplayDevice() const { return mDisplayDevice; }
+   void setDisplayDevice(IDisplayDevice* display) { if (mDisplayDevice) mDisplayDevice->setDrawCanvas(NULL); mDisplayDevice = display; }
    void clearDisplayDevice() { mDisplayDevice = NULL; }
 
    void setControlSchemeParameters(bool absoluteRotation, bool addYawToAbsRot, bool addPitchToAbsRot);