Render from multiple cameras, see #43

--HG--
branch : multipass-stereo

code/nel/include/nel/3d/stereo_ovr.h

@@ -49,11 +49,15 @@
 
 // NeL includes
 #include <nel/misc/smart_ptr.h>
+#include <nel/3d/frustum.h>
+#include <nel/3d/viewport.h>
 
 // Project includes
 
 namespace NL3D {
 
+class UCamera;
+
 struct CStereoDeviceInfo
 {
 public:
@@ -80,6 +84,20 @@ public:
 	CStereoOVR(const CStereoDeviceInfo &deviceInfo);
 	virtual ~CStereoOVR();
 
+	/// Gets the required screen resolution for this device
+	virtual void getScreenResolution(uint &width, uint &height);
+	/// Set latest camera position etcetera
+	virtual void updateCamera(const NL3D::UCamera *camera);
+
+	/// Is there a next pass
+	virtual bool nextPass();
+	/// Gets the current viewport
+	virtual const NL3D::CViewport &getCurrentViewport();
+	/// Gets the current camera frustum
+	virtual void getCurrentFrustum(NL3D::UCamera *camera);
+	/// Gets the current camera matrix
+	virtual void getCurrentMatrix(NL3D::UCamera *camera);
+
 	virtual NLMISC::CQuat getOrientation();
 
 	static void listDevices(std::vector<CStereoDeviceInfo> &devicesOut);
@@ -87,10 +105,19 @@ public:
 	static bool isLibraryInUse();
 	static void releaseLibrary();
 
+	/// Calculates internal camera information based on the reference camera
+	void initCamera(const NL3D::UCamera *camera);
+
 	bool isDeviceCreated();
 
 private:
 	CStereoOVRDevicePtr *m_DevicePtr;
+	int m_Stage;
+	CViewport m_LeftViewport;
+	CViewport m_RightViewport;
+	CFrustum m_LeftFrustum;
+	CFrustum m_RightFrustum;
+	CMatrix m_CameraMatrix;
 
 }; /* class CStereoOVR */
 

code/nel/src/3d/stereo_ovr.cpp

@@ -51,6 +51,7 @@
 
 // NeL includes
 // #include <nel/misc/debug.h>
+#include <nel/3d/u_camera.h>
 
 // Project includes
 
@@ -142,9 +143,10 @@ public:
 	OVR::Ptr<OVR::HMDDevice> HMDDevice;
 	OVR::Ptr<OVR::SensorDevice> SensorDevice;
 	OVR::SensorFusion SensorFusion;
+	OVR::HMDInfo HMDInfo;
 };
 
-CStereoOVR::CStereoOVR(const CStereoDeviceInfo &deviceInfo)
+CStereoOVR::CStereoOVR(const CStereoDeviceInfo &deviceInfo) : m_Stage(2)
 {
 	++s_DeviceCounter;
 	m_DevicePtr = new CStereoOVRDevicePtr();
@@ -155,11 +157,30 @@ CStereoOVR::CStereoOVR(const CStereoDeviceInfo &deviceInfo)
 
 	if (m_DevicePtr->HMDDevice)
 	{
+		m_DevicePtr->HMDDevice->GetDeviceInfo(&m_DevicePtr->HMDInfo);
+		nldebug("OVR: HScreenSize: %f, VScreenSize: %f", m_DevicePtr->HMDInfo.HScreenSize, m_DevicePtr->HMDInfo.VScreenSize);
+		nldebug("OVR: VScreenCenter: %f", m_DevicePtr->HMDInfo.VScreenCenter);
+		nldebug("OVR: EyeToScreenDistance: %f", m_DevicePtr->HMDInfo.EyeToScreenDistance);
+		nldebug("OVR: LensSeparationDistance: %f", m_DevicePtr->HMDInfo.LensSeparationDistance);
+		nldebug("OVR: InterpupillaryDistance: %f", m_DevicePtr->HMDInfo.InterpupillaryDistance);
+		nldebug("OVR: HResolution: %i, VResolution: %i", m_DevicePtr->HMDInfo.HResolution, m_DevicePtr->HMDInfo.VResolution);
+		nldebug("OVR: DistortionK[0]: %f, DistortionK[1]: %f", m_DevicePtr->HMDInfo.DistortionK[0], m_DevicePtr->HMDInfo.DistortionK[1]);
+		nldebug("OVR: DistortionK[2]: %f, DistortionK[3]: %f", m_DevicePtr->HMDInfo.DistortionK[2], m_DevicePtr->HMDInfo.DistortionK[3]);
+		//2013/06/26 05:31:51 DBG 17a0 snowballs_client.exe stereo_ovr.cpp 160 NL3D::CStereoOVR::CStereoOVR : OVR: HScreenSize: 0.149760, VScreenSize: 0.093600
+		//2013/06/26 05:31:51 DBG 17a0 snowballs_client.exe stereo_ovr.cpp 161 NL3D::CStereoOVR::CStereoOVR : OVR: VScreenCenter: 0.046800
+		//2013/06/26 05:31:51 DBG 17a0 snowballs_client.exe stereo_ovr.cpp 162 NL3D::CStereoOVR::CStereoOVR : OVR: EyeToScreenDistance: 0.041000
+		//2013/06/26 05:31:51 DBG 17a0 snowballs_client.exe stereo_ovr.cpp 163 NL3D::CStereoOVR::CStereoOVR : OVR: LensSeparationDistance: 0.063500
+		//2013/06/26 05:31:51 DBG 17a0 snowballs_client.exe stereo_ovr.cpp 164 NL3D::CStereoOVR::CStereoOVR : OVR: InterpupillaryDistance: 0.064000
+		//2013/06/26 05:31:51 DBG 17a0 snowballs_client.exe stereo_ovr.cpp 165 NL3D::CStereoOVR::CStereoOVR : OVR: HResolution: 1280, VResolution: 800
+		//2013/06/26 05:31:51 DBG 17a0 snowballs_client.exe stereo_ovr.cpp 166 NL3D::CStereoOVR::CStereoOVR : OVR: DistortionK[0]: 1.000000, DistortionK[1]: 0.220000
+		//2013/06/26 05:31:51 DBG 17a0 snowballs_client.exe stereo_ovr.cpp 167 NL3D::CStereoOVR::CStereoOVR : OVR: DistortionK[2]: 0.240000, DistortionK[3]: 0.000000
 		m_DevicePtr->SensorDevice = m_DevicePtr->HMDDevice->GetSensor();
 		m_DevicePtr->SensorFusion.AttachToSensor(m_DevicePtr->SensorDevice);
 		m_DevicePtr->SensorFusion.SetGravityEnabled(true);
 		m_DevicePtr->SensorFusion.SetPredictionEnabled(true);
 		m_DevicePtr->SensorFusion.SetYawCorrectionEnabled(true);
+		m_LeftViewport.init(0.f, 0.f, 0.5f, 1.0f);
+		m_RightViewport.init(0.5f, 0.f, 0.5f, 1.0f);
 	}
 }
 
@@ -177,6 +198,74 @@ CStereoOVR::~CStereoOVR()
 	--s_DeviceCounter;
 }
 
+void CStereoOVR::getScreenResolution(uint &width, uint &height)
+{
+	width = m_DevicePtr->HMDInfo.HResolution;
+	height = m_DevicePtr->HMDInfo.VResolution;
+}
+
+void CStereoOVR::initCamera(const NL3D::UCamera *camera)
+{
+	float ar = (float)m_DevicePtr->HMDInfo.HResolution / ((float)m_DevicePtr->HMDInfo.VResolution * 2.0f);
+	float fov = 2.0f * atanf((m_DevicePtr->HMDInfo.VScreenSize / 2.0f) / m_DevicePtr->HMDInfo.EyeToScreenDistance); //(float)NLMISC::Pi/2.f; // 2.0f * atanf(m_DevicePtr->HMDInfo.VScreenSize / 2.0f * m_DevicePtr->HMDInfo.EyeToScreenDistance);
+	m_LeftFrustum.initPerspective(fov, ar, camera->getFrustum().Near, camera->getFrustum().Far);
+	m_RightFrustum = m_LeftFrustum;
+	float viewCenter = m_DevicePtr->HMDInfo.HScreenSize * 0.25f;
+	float eyeProjectionShift = viewCenter - m_DevicePtr->HMDInfo.LensSeparationDistance * 0.5f;
+	float projectionCenterOffset = 4.0f * eyeProjectionShift / m_DevicePtr->HMDInfo.HScreenSize;
+	nldebug("OVR: projectionCenterOffset = %f", projectionCenterOffset);
+	projectionCenterOffset *= (m_LeftFrustum.Left - m_LeftFrustum.Right) * 0.5f; // made this up ...
+	m_LeftFrustum.Left += projectionCenterOffset;
+	m_LeftFrustum.Right += projectionCenterOffset;
+	m_RightFrustum.Left -= projectionCenterOffset;
+	m_RightFrustum.Right -= projectionCenterOffset;
+}
+
+void CStereoOVR::updateCamera(const NL3D::UCamera *camera)
+{
+	if (camera->getFrustum().Near != m_LeftFrustum.Near
+		|| camera->getFrustum().Far != m_LeftFrustum.Far)
+		CStereoOVR::initCamera(camera);
+	m_CameraMatrix = camera->getMatrix();
+}
+
+bool CStereoOVR::nextPass()
+{
+	switch (m_Stage)
+	{
+	case 0:
+		++m_Stage;
+		return true;
+	case 1:
+		++m_Stage;
+		return false;
+	case 2:
+		m_Stage = 0;
+		return true;
+	}
+}
+
+const NL3D::CViewport &CStereoOVR::getCurrentViewport()
+{
+	if (m_Stage) return m_RightViewport;
+	else return m_LeftViewport;
+}
+
+void CStereoOVR::getCurrentFrustum(NL3D::UCamera *camera)
+{
+	if (m_Stage) camera->setFrustum(m_RightFrustum);
+	else camera->setFrustum(m_LeftFrustum);
+}
+
+void CStereoOVR::getCurrentMatrix(NL3D::UCamera *camera)
+{
+	CMatrix translate;
+	if (m_Stage) translate.translate(CVector(m_DevicePtr->HMDInfo.InterpupillaryDistance * -0.5f, 0.f, 0.f));
+	else translate.translate(CVector(m_DevicePtr->HMDInfo.InterpupillaryDistance * 0.5f, 0.f, 0.f));
+	camera->setTransformMode(NL3D::UTransformable::DirectMatrix);
+	camera->setMatrix(m_CameraMatrix * translate); // or switch?
+}
+
 NLMISC::CQuat CStereoOVR::getOrientation()
 {
 	OVR::Quatf quatovr = m_DevicePtr->SensorFusion.GetPredictedOrientation();
@@ -225,7 +314,11 @@ void CStereoOVR::listDevices(std::vector<CStereoDeviceInfo> &devicesOut)
 
 CStereoOVR *CStereoOVR::createDevice(const CStereoDeviceInfo &deviceInfo)
 {
-	return new CStereoOVR(deviceInfo);
+	CStereoOVR *stereo = new CStereoOVR(deviceInfo);
+	if (stereo->isDeviceCreated())
+		return stereo;
+	delete stereo;
+	return NULL;
 }
 
 bool CStereoOVR::isLibraryInUse()

code/snowballs2/bin/snowballs_client_default.cfg

@@ -52,7 +52,7 @@ ScreenHeight = 800;
 ScreenDepth = 32;
 
 // If 1, run in fullscreen mode, 0 for windowed
-ScreenFull = 0;
+ScreenFull = 1;
 
 // Start position of the player (the z is always 0)
 StartPoint = { 1840.0, -970.0, 0.0 };

code/snowballs2/client/src/camera.cpp

@@ -64,13 +64,13 @@ UVisualCollisionEntity	*CamCollisionEntity = NULL;
 static UInstance			Snow = NULL;
 
 // The sky 3D objects
-static UScene				*SkyScene = NULL;
-static UCamera				SkyCamera = NULL;
+UScene				*SkyScene = NULL;
+UCamera				SkyCamera = NULL;
 static UInstance			Sky = NULL;
 
 static UCloudScape			*Clouds = NULL;
 
-static CStereoOVR *s_StereoHMD = NULL;
+CStereoOVR *StereoHMD = NULL;
 
 //
 // Functions
@@ -111,7 +111,7 @@ void	initCamera()
 		if (deviceInfo)
 		{
 			nlinfo("Create HMD device!");
-			s_StereoHMD = CStereoOVR::createDevice(*deviceInfo);
+			StereoHMD = CStereoOVR::createDevice(*deviceInfo);
 		}
 	}
 
@@ -129,6 +129,13 @@ void	initCamera()
 	CamCollisionEntity = VisualCollisionManager->createEntity();
 	CamCollisionEntity->setCeilMode(true);
 
+	if (StereoHMD)
+	{
+		StereoHMD->nextPass(); // test
+
+		StereoHMD->initCamera(&Camera);
+	}
+
 	// Create the snowing particle system
 	Snow = Scene->createInstance("snow.ps");
 	// And setup it
@@ -159,16 +166,16 @@ void releaseCamera()
 	Scene->deleteInstance(Snow);
 	VisualCollisionManager->deleteEntity(CamCollisionEntity);
 
-	delete s_StereoHMD;
-	s_StereoHMD = NULL;
+	delete StereoHMD;
+	StereoHMD = NULL;
 	CStereoOVR::releaseLibrary();
 }
 
 void updateCamera()
 {
-	if (s_StereoHMD)
+	if (StereoHMD)
 	{
-		NLMISC::CQuat hmdOrient = s_StereoHMD->getOrientation();
+		NLMISC::CQuat hmdOrient = StereoHMD->getOrientation();
 		NLMISC::CMatrix camMatrix = Camera.getMatrix();
 		NLMISC::CMatrix hmdMatrix;
 		hmdMatrix.setRot(hmdOrient);
@@ -217,6 +224,7 @@ void updateSky()
 	// Must clear ZBuffer For incoming rendering.
 	Driver->clearZBuffer();
 
+	if (!StereoHMD) // Cloudscape not supported (fix Viewport please)
 		Clouds->render();
 }
 

code/snowballs2/client/src/camera.h

@@ -30,6 +30,7 @@
 namespace NL3D
 {
 	class UVisualCollisionEntity;
+	class CStereoOVR;
 };
 
 namespace SBCLIENT {
@@ -39,7 +40,10 @@ namespace SBCLIENT {
 //
 
 extern NL3D::UCamera				Camera;
+extern NL3D::UCamera						SkyCamera;
 extern NL3D::UVisualCollisionEntity	*CamCollisionEntity;
+extern NL3D::CStereoOVR *StereoHMD;
+extern NL3D::UScene				*SkyScene;
 
 //
 // External functions

code/snowballs2/client/src/snowballs_client.cpp

@@ -51,6 +51,7 @@
 #if SBCLIENT_DEV_STEREO
 #	include <nel/3d/stereo_render.h>
 #endif /* #if SBCLIENT_DEV_STEREO */
+#include <nel/3d/stereo_ovr.h>
 
 // Project includes
 #include "pacs.h"
@@ -709,6 +710,7 @@ void loopIngame()
 
 		// 09. Update Camera (depends on entities)
 		updateCamera();
+		StereoHMD->updateCamera(&Camera);
 
 		// 10. Update Interface (login, ui, etc)
 		// ...
@@ -729,17 +731,28 @@ void loopIngame()
 		else
 		{
 			// call all 3d render thingies
-			Driver->clearBuffers(CRGBA(127, 0, 0)); // if you see red, there's a problem with bloom or stereo render
+			// Driver->clearBuffers(CRGBA(127, 0, 0)); // if you see red, there's a problem with bloom or stereo render
+			
+			// 01. Render Driver (background color)
+			// BLOOM CBloomEffect::instance().initBloom(); // start bloom effect (just before the first scene element render)
+			Driver->clearBuffers(CRGBA(0, 0, 127)); // clear all buffers, if you see this blue there's a problem with scene rendering
+
 #if SBCLIENT_DEV_STEREO
 			_StereoRender->calculateCameras(Camera.getObjectPtr()); // calculate modified matrices for the current camera
 			for (uint cameraId = 0; cameraId < _StereoRender->getCameraCount(); ++cameraId)
 			{
 				_StereoRender->getCamera(cameraId, Camera.getObjectPtr()); // get the matrix details for this camera
-#endif /* #if SBCLIENT_DEV_STEREO */
 
-				// 01. Render Driver (background color)
-				CBloomEffect::instance().initBloom(); // start bloom effect (just before the first scene element render)
-				Driver->clearBuffers(CRGBA(0, 0, 127)); // clear all buffers, if you see this blue there's a problem with scene rendering
+#endif /* #if SBCLIENT_DEV_STEREO */
+			while (StereoHMD->nextPass())
+			{
+				const CViewport &vp = StereoHMD->getCurrentViewport();
+				Driver->setViewport(vp);
+				Scene->setViewport(vp);
+				SkyScene->setViewport(vp);
+				StereoHMD->getCurrentFrustum(&Camera);
+				StereoHMD->getCurrentFrustum(&SkyCamera);
+				StereoHMD->getCurrentMatrix(&Camera);
 
 				// 02. Render Sky (sky scene)
 				updateSky(); // Render the sky scene before the main scene
@@ -749,10 +762,10 @@ void loopIngame()
 
 				// 05. Render Effects (flare)
 				updateLensFlare(); // Render the lens flare
-				CBloomEffect::instance().endBloom(); // end the actual bloom effect visible in the scene
+				// BLOOM CBloomEffect::instance().endBloom(); // end the actual bloom effect visible in the scene
 
 				// 06. Render Interface 3D (player names)
-				CBloomEffect::instance().endInterfacesDisplayBloom(); // end bloom effect system after drawing the 3d interface (z buffer related)
+				// BLOOM CBloomEffect::instance().endInterfacesDisplayBloom(); // end bloom effect system after drawing the 3d interface (z buffer related)
 
 #if SBCLIENT_DEV_STEREO
 				_StereoRender->copyBufferToTexture(cameraId); // copy current buffer to the active stereorender texture
@@ -774,6 +787,7 @@ void loopIngame()
 
 				// 08. Render Debug (stuff for dev)
 				// ...
+			}
 
 			// 09. Render Buffer
 			Driver->swapBuffers();