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Add support for LibVR

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This commit is contained in:
Thibaut Girka 2013-08-28 08:08:22 +02:00
parent beb66b19b7
commit a45299bfe5
7 changed files with 848 additions and 2 deletions
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32
code/CMakeModules/FindLibVR.cmake Normal file
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@ -0,0 +1,32 @@
# - Locate LibVR library
# This module defines
# LIBVR_LIBRARIES, the libraries to link against
# LIBVR_FOUND, if false, do not try to link to LIBVR
# LIBVR_INCLUDE_DIR, where to find headers.
IF(LIBVR_LIBRARIES AND LIBVR_INCLUDE_DIR)
# in cache already
SET(LIBVR_FIND_QUIETLY TRUE)
ENDIF(LIBVR_LIBRARIES AND LIBVR_INCLUDE_DIR)
FIND_PATH(LIBVR_INCLUDE_DIR hmd.h
PATH_SUFFIXES include/LibVR
)
FIND_LIBRARY(LIBVR_LIBRARY
NAMES vr
PATH_SUFFIXES lib
PATHS
)
IF(LIBVR_LIBRARY AND LIBVR_INCLUDE_DIR)
IF(NOT LIBVR_FIND_QUIETLY)
MESSAGE(STATUS "Found LibVR: ${LIBVR_LIBRARY}")
ENDIF(NOT LIBVR_FIND_QUIETLY)
SET(LIBVR_FOUND "YES")
SET(LIBVR_DEFINITIONS "-DHAVE_LIBVR")
ELSE(LIBVR_LIBRARY AND LIBVR_INCLUDE_DIR)
IF(NOT LIBVR_FIND_QUIETLY)
MESSAGE(STATUS "Warning: Unable to find LibVR!")
ENDIF(NOT LIBVR_FIND_QUIETLY)
ENDIF(LIBVR_LIBRARY AND LIBVR_INCLUDE_DIR)

1
code/CMakeModules/nel.cmake
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@ -322,6 +322,7 @@ MACRO(NL_SETUP_NEL_DEFAULT_OPTIONS)
OPTION(WITH_NEL_TESTS "Build NeL Unit Tests" ON )
OPTION(WITH_LIBOVR "With LibOVR support" OFF)
OPTION(WITH_LIBVR "With LibVR support" OFF)
ENDMACRO(NL_SETUP_NEL_DEFAULT_OPTIONS)
MACRO(NL_SETUP_NELNS_DEFAULT_OPTIONS)

4
code/nel/CMakeLists.txt
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@ -45,6 +45,10 @@ IF(WITH_LIBOVR)
FIND_PACKAGE(LibOVR)
ENDIF(WITH_LIBOVR)
IF(WITH_LIBVR)
FIND_PACKAGE(LibVR)
ENDIF(WITH_LIBVR)
IF(WITH_INSTALL_LIBRARIES)
IF(UNIX)
SET(prefix ${CMAKE_INSTALL_PREFIX})

160
code/nel/include/nel/3d/stereo_libvr.h Normal file
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@ -0,0 +1,160 @@
/**
* \file stereo_libvr.h
* \brief CStereoLibVR
* \date 2013-08-19 19:17MT
* \author Thibaut Girka (ThibG)
* CStereoLibVR
*/
/*
* Copyright (C) 2013 by authors
*
* This file is part of NL3D.
* NL3D is free software: you can redistribute it and/or modify it
* under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* NL3D is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General
* Public License for more details.
*
* You should have received a copy of the GNU Affero General Public
* License along with NL3D. If not, see
* <http://www.gnu.org/licenses/>.
*/
#ifndef NL3D_STEREO_LIBVR_H
#define NL3D_STEREO_LIBVR_H
#ifdef HAVE_LIBVR
#include <nel/misc/types_nl.h>
// STL includes
// NeL includes
#include <nel/misc/smart_ptr.h>
#include <nel/misc/geom_ext.h>
// Project includes
#include <nel/3d/stereo_hmd.h>
#include <nel/3d/frustum.h>
#include <nel/3d/viewport.h>
#include <nel/3d/u_material.h>
namespace NL3D {
class ITexture;
class CTextureUser;
class CStereoLibVRDevicePtr;
class CStereoLibVRDeviceHandle;
class CPixelProgram;
#define NL_STEREO_MAX_USER_CAMERAS 8
/**
* \brief CStereoOVR
* \date 2013-06-25 22:22GMT
* \author Jan Boon (Kaetemi)
* CStereoOVR
*/
class CStereoLibVR : public IStereoHMD
{
public:
CStereoLibVR(const CStereoLibVRDeviceHandle *handle);
virtual ~CStereoLibVR();
/// Sets driver and generates necessary render targets
virtual void setDriver(NL3D::UDriver *driver);
/// Gets the required screen resolution for this device
virtual bool getScreenResolution(uint &width, uint &height);
/// Set latest camera position etcetera
virtual void updateCamera(uint cid, const NL3D::UCamera *camera);
/// Get the frustum to use for clipping
virtual void getClippingFrustum(uint cid, NL3D::UCamera *camera) const;
/// Is there a next pass
virtual bool nextPass();
/// Gets the current viewport
virtual const NL3D::CViewport &getCurrentViewport() const;
/// Gets the current camera frustum
virtual const NL3D::CFrustum &getCurrentFrustum(uint cid) const;
/// Gets the current camera frustum
virtual void getCurrentFrustum(uint cid, NL3D::UCamera *camera) const;
/// Gets the current camera matrix
virtual void getCurrentMatrix(uint cid, NL3D::UCamera *camera) const;
/// At the start of a new render target
virtual bool wantClear();
/// The 3D scene
virtual bool wantScene();
/// Interface within the 3D scene
virtual bool wantInterface3D();
/// 2D Interface
virtual bool wantInterface2D();
/// Returns true if a new render target was set, always fase if not using render targets
virtual bool beginRenderTarget();
/// Returns true if a render target was fully drawn, always false if not using render targets
virtual bool endRenderTarget();
/// Get the HMD orientation
virtual NLMISC::CQuat getOrientation() const;
/// Get GUI center (1 = width, 1 = height, 0 = center)
virtual void getInterface2DShift(uint cid, float &x, float &y, float distance) const;
/// Set the head model, eye position relative to orientation point
virtual void setEyePosition(const NLMISC::CVector &v);
/// Get the head model, eye position relative to orientation point
virtual const NLMISC::CVector &getEyePosition() const;
/// Set the scale of the game in units per meter
virtual void setScale(float s);
static void listDevices(std::vector<CStereoDeviceInfo> &devicesOut);
static bool isLibraryInUse();
static void releaseLibrary();
/// Calculates internal camera information based on the reference camera
void initCamera(uint cid, const NL3D::UCamera *camera);
/// Checks if the device used by this class was actually created
bool isDeviceCreated();
private:
CStereoLibVRDevicePtr *m_DevicePtr;
int m_Stage;
int m_SubStage;
CViewport m_LeftViewport;
CViewport m_RightViewport;
CFrustum m_ClippingFrustum[NL_STEREO_MAX_USER_CAMERAS];
CFrustum m_LeftFrustum[NL_STEREO_MAX_USER_CAMERAS];
CFrustum m_RightFrustum[NL_STEREO_MAX_USER_CAMERAS];
CMatrix m_CameraMatrix[NL_STEREO_MAX_USER_CAMERAS];
mutable bool m_OrientationCached;
mutable NLMISC::CQuat m_OrientationCache;
UDriver *m_Driver;
NLMISC::CSmartPtr<NL3D::ITexture> m_BarrelTex;
NL3D::CTextureUser *m_BarrelTexU;
NL3D::UMaterial m_BarrelMat;
NLMISC::CQuadUV m_BarrelQuadLeft;
NLMISC::CQuadUV m_BarrelQuadRight;
CPixelProgram *m_PixelProgram;
NLMISC::CVector m_EyePosition;
float m_Scale;
}; /* class CStereoLibVR */
} /* namespace NL3D */
#endif /* HAVE_LIBVR */
#endif /* #ifndef NL3D_STEREO_LIBVR_H */
/* end of file */

7
code/nel/src/3d/CMakeLists.txt
View file

@ -696,14 +696,16 @@ SOURCE_GROUP(Stereo FILES
stereo_ovr.cpp
stereo_ovr_fp.cpp
../../include/nel/3d/stereo_ovr.h
stereo_libvr.cpp
../../include/nel/3d/stereo_libvr.h
stereo_debugger.cpp
../../include/nel/3d/stereo_debugger.h)
NL_TARGET_LIB(nel3d ${HEADERS} ${SRC})
INCLUDE_DIRECTORIES(${LIBXML2_INCLUDE_DIR} ${FREETYPE_INCLUDE_DIRS} ${LIBOVR_INCLUDE_DIR})
INCLUDE_DIRECTORIES(${LIBXML2_INCLUDE_DIR} ${FREETYPE_INCLUDE_DIRS} ${LIBOVR_INCLUDE_DIR} ${LIBVR_INCLUDE_DIR})
TARGET_LINK_LIBRARIES(nel3d nelmisc ${FREETYPE_LIBRARY} ${LIBOVR_LIBRARIES})
TARGET_LINK_LIBRARIES(nel3d nelmisc ${FREETYPE_LIBRARY} ${LIBOVR_LIBRARIES} ${LIBVR_LIBRARY})
SET_TARGET_PROPERTIES(nel3d PROPERTIES LINK_INTERFACE_LIBRARIES "")
NL_DEFAULT_PROPS(nel3d "NeL, Library: NeL 3D")
NL_ADD_RUNTIME_FLAGS(nel3d)
@ -714,6 +716,7 @@ NL_ADD_LIB_SUFFIX(nel3d)
ADD_DEFINITIONS(${LIBXML2_DEFINITIONS})
ADD_DEFINITIONS(${LIBOVR_DEFINITIONS})
ADD_DEFINITIONS(${LIBVR_DEFINITIONS})
IF(WITH_PCH)
ADD_NATIVE_PRECOMPILED_HEADER(nel3d ${CMAKE_CURRENT_SOURCE_DIR}/std3d.h ${CMAKE_CURRENT_SOURCE_DIR}/std3d.cpp)

4
code/nel/src/3d/stereo_display.cpp
View file

@ -35,6 +35,7 @@
// Project includes
#include <nel/3d/stereo_ovr.h>
#include <nel/3d/stereo_libvr.h>
#include <nel/3d/stereo_debugger.h>
using namespace std;
@ -78,6 +79,9 @@ void IStereoDisplay::listDevices(std::vector<CStereoDeviceInfo> &devicesOut)
#ifdef HAVE_LIBOVR
CStereoOVR::listDevices(devicesOut);
#endif
#ifdef HAVE_LIBVR
CStereoLibVR::listDevices(devicesOut);
#endif
#if !FINAL_VERSION
CStereoDebugger::listDevices(devicesOut);
#endif

642
code/nel/src/3d/stereo_libvr.cpp Normal file
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@ -0,0 +1,642 @@
/**
* \file stereo_libvr.cpp
* \brief CStereoLibVR
* \date 2013-08-19 19:17MT
* \author Thibaut Girka (ThibG)
* CStereoLibVR
*/
/*
* Copyright (C) 2013 by authors
*
* This file is part of NL3D.
* NL3D is free software: you can redistribute it and/or modify it
* under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* NL3D is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General
* Public License for more details.
*
* You should have received a copy of the GNU Affero General Public
* License along with NL3D. If not, see
* <http://www.gnu.org/licenses/>.
*/
#ifdef HAVE_LIBVR
#include <nel/misc/types_nl.h>
#include <nel/misc/time_nl.h>
#include <nel/3d/stereo_libvr.h>
// STL includes
#include <sstream>
// External includes
extern "C" {
#include <hmd.h>
}
// NeL includes
// #include <nel/misc/debug.h>
#include <nel/3d/u_camera.h>
#include <nel/3d/u_driver.h>
#include <nel/3d/material.h>
#include <nel/3d/texture_bloom.h>
#include <nel/3d/texture_user.h>
#include <nel/3d/driver_user.h>
#include <nel/3d/u_texture.h>
// Project includes
using namespace std;
// using namespace NLMISC;
namespace NL3D {
extern const char *g_StereoOVR_fp40; //TODO: what?
extern const char *g_StereoOVR_arbfp1; //TODO: what?
extern const char *g_StereoOVR_ps_2_0; //TODO: what?
namespace {
sint s_DeviceCounter = 0;
};
class CStereoLibVRDeviceHandle : public IStereoDeviceFactory
{
public:
// fixme: virtual destructor???
IStereoDisplay *createDevice() const
{
CStereoLibVR *stereo = new CStereoLibVR(this);
if (stereo->isDeviceCreated())
return stereo;
delete stereo;
return NULL;
}
};
class CStereoLibVRDevicePtr
{
public:
struct hmd *HMDDevice;
struct display_info HMDInfo;
float InterpupillaryDistance;
};
CStereoLibVR::CStereoLibVR(const CStereoLibVRDeviceHandle *handle) : m_Stage(0), m_SubStage(0), m_OrientationCached(false), m_Driver(NULL), m_BarrelTexU(NULL), m_PixelProgram(NULL), m_EyePosition(0.0f, 0.09f, 0.15f), m_Scale(1.0f)
{
struct stereo_config st_conf;
++s_DeviceCounter;
// For now, LibVR doesn't support multiple devices...
m_DevicePtr = new CStereoLibVRDevicePtr();
m_DevicePtr->HMDDevice = hmd_open_first(0);
m_DevicePtr->InterpupillaryDistance = 0.0647; //TODO
if (m_DevicePtr->HMDDevice)
{
hmd_get_display_info(m_DevicePtr->HMDDevice, &m_DevicePtr->HMDInfo);
hmd_get_stereo_config(m_DevicePtr->HMDDevice, &st_conf);
nldebug("LibVR: HScreenSize: %f, VScreenSize: %f", m_DevicePtr->HMDInfo.h_screen_size, m_DevicePtr->HMDInfo.v_screen_size);
nldebug("LibVR: VScreenCenter: %f", m_DevicePtr->HMDInfo.v_center);
nldebug("LibVR: EyeToScreenDistance: %f", m_DevicePtr->HMDInfo.eye_to_screen[0]);
nldebug("LibVR: LensSeparationDistance: %f", m_DevicePtr->HMDInfo.lens_separation);
nldebug("LibVR: HResolution: %i, VResolution: %i", m_DevicePtr->HMDInfo.h_resolution, m_DevicePtr->HMDInfo.v_resolution);
nldebug("LibVR: DistortionK[0]: %f, DistortionK[1]: %f", m_DevicePtr->HMDInfo.distortion_k[0], m_DevicePtr->HMDInfo.distortion_k[1]);
nldebug("LibVR: DistortionK[2]: %f, DistortionK[3]: %f", m_DevicePtr->HMDInfo.distortion_k[2], m_DevicePtr->HMDInfo.distortion_k[3]);
nldebug("LibVR: Scale: %f", st_conf.distort.scale);
m_LeftViewport.init(0.f, 0.f, 0.5f, 1.0f);
m_RightViewport.init(0.5f, 0.f, 0.5f, 1.0f);
}
}
CStereoLibVR::~CStereoLibVR()
{
if (!m_BarrelMat.empty())
{
m_BarrelMat.getObjectPtr()->setTexture(0, NULL);
m_Driver->deleteMaterial(m_BarrelMat);
}
delete m_BarrelTexU;
m_BarrelTexU = NULL;
m_BarrelTex = NULL; // CSmartPtr
delete m_PixelProgram;
m_PixelProgram = NULL;
m_Driver = NULL;
if (m_DevicePtr->HMDDevice)
hmd_close(m_DevicePtr->HMDDevice);
delete m_DevicePtr;
m_DevicePtr = NULL;
--s_DeviceCounter;
}
void CStereoLibVR::setDriver(NL3D::UDriver *driver)
{
nlassert(!m_PixelProgram);
NL3D::IDriver *drvInternal = (static_cast<CDriverUser *>(driver))->getDriver();
if (drvInternal->supportPixelProgram(CPixelProgram::fp40) && drvInternal->supportBloomEffect() && drvInternal->supportNonPowerOfTwoTextures())
{
nldebug("VR: fp40");
m_PixelProgram = new CPixelProgram(g_StereoOVR_fp40);
}
else if (drvInternal->supportPixelProgram(CPixelProgram::arbfp1) && drvInternal->supportBloomEffect() && drvInternal->supportNonPowerOfTwoTextures())
{
nldebug("VR: arbfp1");
m_PixelProgram = new CPixelProgram(g_StereoOVR_arbfp1);
}
else if (drvInternal->supportPixelProgram(CPixelProgram::ps_2_0))
{
nldebug("VR: ps_2_0");
m_PixelProgram = new CPixelProgram(g_StereoOVR_ps_2_0);
}
if (m_PixelProgram)
{
m_Driver = driver;
m_BarrelTex = new CTextureBloom(); // lol bloom
m_BarrelTex->setRenderTarget(true);
m_BarrelTex->setReleasable(false);
m_BarrelTex->resize(m_DevicePtr->HMDInfo.h_resolution, m_DevicePtr->HMDInfo.v_resolution);
m_BarrelTex->setFilterMode(ITexture::Linear, ITexture::LinearMipMapOff);
m_BarrelTex->setWrapS(ITexture::Clamp);
m_BarrelTex->setWrapT(ITexture::Clamp);
drvInternal->setupTexture(*m_BarrelTex);
m_BarrelTexU = new CTextureUser(m_BarrelTex);
m_BarrelMat = m_Driver->createMaterial();
m_BarrelMat.initUnlit();
m_BarrelMat.setColor(CRGBA::White);
m_BarrelMat.setBlend (false);
m_BarrelMat.setAlphaTest (false);
NL3D::CMaterial *barrelMat = m_BarrelMat.getObjectPtr();
barrelMat->setShader(NL3D::CMaterial::PostProcessing);
barrelMat->setBlendFunc(CMaterial::one, CMaterial::zero);
barrelMat->setZWrite(false);
barrelMat->setZFunc(CMaterial::always);
barrelMat->setDoubleSided(true);
barrelMat->setTexture(0, m_BarrelTex);
m_BarrelQuadLeft.V0 = CVector(0.f, 0.f, 0.5f);
m_BarrelQuadLeft.V1 = CVector(0.5f, 0.f, 0.5f);
m_BarrelQuadLeft.V2 = CVector(0.5f, 1.f, 0.5f);
m_BarrelQuadLeft.V3 = CVector(0.f, 1.f, 0.5f);
m_BarrelQuadRight.V0 = CVector(0.5f, 0.f, 0.5f);
m_BarrelQuadRight.V1 = CVector(1.f, 0.f, 0.5f);
m_BarrelQuadRight.V2 = CVector(1.f, 1.f, 0.5f);
m_BarrelQuadRight.V3 = CVector(0.5f, 1.f, 0.5f);
nlassert(!drvInternal->isTextureRectangle(m_BarrelTex)); // not allowed
m_BarrelQuadLeft.Uv0 = CUV(0.f, 0.f);
m_BarrelQuadLeft.Uv1 = CUV(0.5f, 0.f);
m_BarrelQuadLeft.Uv2 = CUV(0.5f, 1.f);
m_BarrelQuadLeft.Uv3 = CUV(0.f, 1.f);
m_BarrelQuadRight.Uv0 = CUV(0.5f, 0.f);
m_BarrelQuadRight.Uv1 = CUV(1.f, 0.f);
m_BarrelQuadRight.Uv2 = CUV(1.f, 1.f);
m_BarrelQuadRight.Uv3 = CUV(0.5f, 1.f);
}
else
{
nlwarning("VR: No pixel program support");
}
}
bool CStereoLibVR::getScreenResolution(uint &width, uint &height)
{
width = m_DevicePtr->HMDInfo.h_resolution;
height = m_DevicePtr->HMDInfo.v_resolution;
return true;
}
void CStereoLibVR::initCamera(uint cid, const NL3D::UCamera *camera)
{
struct stereo_config st_conf;
hmd_get_stereo_config(m_DevicePtr->HMDDevice, &st_conf);
float ar = st_conf.proj.aspect_ratio;
float fov = st_conf.proj.yfov;
m_LeftFrustum[cid].initPerspective(fov, ar, camera->getFrustum().Near, camera->getFrustum().Far);
m_RightFrustum[cid] = m_LeftFrustum[cid];
float projectionCenterOffset = st_conf.proj.projection_offset * 0.5 * (m_LeftFrustum[cid].Right - m_LeftFrustum[cid].Left);
nldebug("LibVR: projectionCenterOffset = %f", projectionCenterOffset);
m_LeftFrustum[cid].Left -= projectionCenterOffset;
m_LeftFrustum[cid].Right -= projectionCenterOffset;
m_RightFrustum[cid].Left += projectionCenterOffset;
m_RightFrustum[cid].Right += projectionCenterOffset;
// TODO: Clipping frustum should also take into account the IPD
m_ClippingFrustum[cid] = m_LeftFrustum[cid];
m_ClippingFrustum[cid].Left = min(m_LeftFrustum[cid].Left, m_RightFrustum[cid].Left);
m_ClippingFrustum[cid].Right = max(m_LeftFrustum[cid].Right, m_RightFrustum[cid].Right);
}
/// Get the frustum to use for clipping
void CStereoLibVR::getClippingFrustum(uint cid, NL3D::UCamera *camera) const
{
camera->setFrustum(m_ClippingFrustum[cid]);
}
void CStereoLibVR::updateCamera(uint cid, const NL3D::UCamera *camera)
{
if (camera->getFrustum().Near != m_LeftFrustum[cid].Near
|| camera->getFrustum().Far != m_LeftFrustum[cid].Far)
CStereoLibVR::initCamera(cid, camera);
m_CameraMatrix[cid] = camera->getMatrix();
}
bool CStereoLibVR::nextPass()
{
// Do not allow weird stuff.
uint32 width, height;
m_Driver->getWindowSize(width, height);
nlassert(width == m_DevicePtr->HMDInfo.h_resolution);
nlassert(height == m_DevicePtr->HMDInfo.v_resolution);
if (m_Driver->getPolygonMode() == UDriver::Filled)
{
switch (m_Stage)
{
case 0:
++m_Stage;
m_SubStage = 0;
// stage 1:
// (initBloom)
// clear buffer
// draw scene left
return true;
case 1:
++m_Stage;
m_SubStage = 0;
// stage 2:
// draw scene right
return true;
case 2:
++m_Stage;
m_SubStage = 0;
// stage 3:
// (endBloom)
// draw interface 3d left
return true;
case 3:
++m_Stage;
m_SubStage = 0;
// stage 4:
// draw interface 3d right
return true;
case 4:
++m_Stage;
m_SubStage = 0;
// stage 5:
// (endInterfacesDisplayBloom)
// draw interface 2d left
return true;
case 5:
++m_Stage;
m_SubStage = 0;
// stage 6:
// draw interface 2d right
return true;
case 6:
m_Stage = 0;
m_SubStage = 0;
// present
m_OrientationCached = false;
return false;
}
}
else
{
switch (m_Stage)
{
case 0:
++m_Stage;
m_SubStage = 0;
return true;
case 1:
m_Stage = 0;
m_SubStage = 0;
return false;
}
}
nlerror("Invalid stage");
m_Stage = 0;
m_SubStage = 0;
m_OrientationCached = false;
return false;
}
const NL3D::CViewport &CStereoLibVR::getCurrentViewport() const
{
if (m_Stage % 2) return m_LeftViewport;
else return m_RightViewport;
}
const NL3D::CFrustum &CStereoLibVR::getCurrentFrustum(uint cid) const
{
if (m_Stage % 2) return m_LeftFrustum[cid];
else return m_RightFrustum[cid];
}
void CStereoLibVR::getCurrentFrustum(uint cid, NL3D::UCamera *camera) const
{
if (m_Stage % 2) camera->setFrustum(m_LeftFrustum[cid]);
else camera->setFrustum(m_RightFrustum[cid]);
}
void CStereoLibVR::getCurrentMatrix(uint cid, NL3D::UCamera *camera) const
{
CMatrix translate;
if (m_Stage % 2) translate.translate(CVector((m_DevicePtr->InterpupillaryDistance * m_Scale) * -0.5f, 0.f, 0.f));
else translate.translate(CVector((m_DevicePtr->InterpupillaryDistance * m_Scale) * 0.5f, 0.f, 0.f));
CMatrix mat = m_CameraMatrix[cid] * translate;
if (camera->getTransformMode() == NL3D::UTransformable::RotQuat)
{
camera->setPos(mat.getPos());
camera->setRotQuat(mat.getRot());
}
else
{
// camera->setTransformMode(NL3D::UTransformable::DirectMatrix);
camera->setMatrix(mat);
}
}
bool CStereoLibVR::wantClear()
{
switch (m_Stage)
{
case 1:
m_SubStage = 1;
return true;
}
return m_Driver->getPolygonMode() != UDriver::Filled;
}
bool CStereoLibVR::wantScene()
{
switch (m_Stage)
{
case 1:
case 2:
m_SubStage = 2;
return true;
}
return m_Driver->getPolygonMode() != UDriver::Filled;
}
bool CStereoLibVR::wantInterface3D()
{
switch (m_Stage)
{
case 3:
case 4:
m_SubStage = 3;
return true;
}
return m_Driver->getPolygonMode() != UDriver::Filled;
}
bool CStereoLibVR::wantInterface2D()
{
switch (m_Stage)
{
case 5:
case 6:
m_SubStage = 4;
return true;
}
return m_Driver->getPolygonMode() != UDriver::Filled;
}
/// Returns non-NULL if a new render target was set
bool CStereoLibVR::beginRenderTarget()
{
// render target always set before driver clear
// nlassert(m_SubStage <= 1);
if (m_Driver && m_Stage == 1 && (m_Driver->getPolygonMode() == UDriver::Filled))
{
static_cast<CDriverUser *>(m_Driver)->setRenderTarget(*m_BarrelTexU, 0, 0, 0, 0);
return true;
}
return false;
}
/// Returns true if a render target was fully drawn
bool CStereoLibVR::endRenderTarget()
{
// after rendering of course
// nlassert(m_SubStage > 1);
if (m_Driver && m_Stage == 6 && (m_Driver->getPolygonMode() == UDriver::Filled)) // set to 4 to turn off distortion of 2d gui
{
struct stereo_config st_conf;
hmd_get_stereo_config(m_DevicePtr->HMDDevice, &st_conf);
CTextureUser cu;
(static_cast<CDriverUser *>(m_Driver))->setRenderTarget(cu);
bool fogEnabled = m_Driver->fogEnabled();
m_Driver->enableFog(false);
m_Driver->setMatrixMode2D11();
CViewport vp = CViewport();
m_Driver->setViewport(vp);
uint32 width, height;
m_Driver->getWindowSize(width, height);
NL3D::IDriver *drvInternal = (static_cast<CDriverUser *>(m_Driver))->getDriver();
NL3D::CMaterial *barrelMat = m_BarrelMat.getObjectPtr();
barrelMat->setTexture(0, m_BarrelTex);
drvInternal->activePixelProgram(m_PixelProgram);
float w = float(m_BarrelQuadLeft.V1.x),// / float(width),
h = float(m_BarrelQuadLeft.V2.y),// / float(height),
x = float(m_BarrelQuadLeft.V0.x),/// / float(width),
y = float(m_BarrelQuadLeft.V0.y);// / float(height);
//TODO: stereo_config stuff
float lensViewportShift = st_conf.proj.projection_offset;
float lensCenterX = x + (w + lensViewportShift * 0.5f) * 0.5f;
float lensCenterY = y + h * 0.5f;
float screenCenterX = x + w * 0.5f;
float screenCenterY = y + h * 0.5f;
float scaleX = (w / 2 / st_conf.distort.scale);
float scaleY = (h / 2 / st_conf.distort.scale);
float scaleInX = (2 / w);
float scaleInY = (2 / h);
drvInternal->setPixelProgramConstant(0, lensCenterX, lensCenterY, 0.f, 0.f);
drvInternal->setPixelProgramConstant(1, screenCenterX, screenCenterY, 0.f, 0.f);
drvInternal->setPixelProgramConstant(2, scaleX, scaleY, 0.f, 0.f);
drvInternal->setPixelProgramConstant(3, scaleInX, scaleInY, 0.f, 0.f);
drvInternal->setPixelProgramConstant(4, 1, st_conf.distort.distortion_k);
m_Driver->drawQuad(m_BarrelQuadLeft, m_BarrelMat);
x = w;
lensCenterX = x + (w - lensViewportShift * 0.5f) * 0.5f;
screenCenterX = x + w * 0.5f;
drvInternal->setPixelProgramConstant(0, lensCenterX, lensCenterY, 0.f, 0.f);
drvInternal->setPixelProgramConstant(1, screenCenterX, screenCenterY, 0.f, 0.f);
m_Driver->drawQuad(m_BarrelQuadRight, m_BarrelMat);
drvInternal->activePixelProgram(NULL);
m_Driver->enableFog(fogEnabled);
return true;
}
return false;
}
NLMISC::CQuat CStereoLibVR::getOrientation() const
{
if (m_OrientationCached)
return m_OrientationCache;
unsigned int t = NLMISC::CTime::getLocalTime();
hmd_update(m_DevicePtr->HMDDevice, &t);
float quat[4];
hmd_get_rotation(m_DevicePtr->HMDDevice, quat);
NLMISC::CMatrix coordsys;
float csys[] = {
1.0f, 0.0f, 0.0f, 0.0f,
0.0f, 0.0f, -1.0f, 0.0f,
0.0f, 1.0f, 0.0f, 0.0f,
0.0f, 0.0f, 0.0f, 1.0f,
};
coordsys.set(csys);
NLMISC::CMatrix matovr;
matovr.setRot(NLMISC::CQuat(quat[1], quat[2], quat[3], quat[0]));
NLMISC::CMatrix matr;
matr.rotateX(NLMISC::Pi * 0.5f); // fix this properly... :) (note: removing this allows you to use rift while lying down)
NLMISC::CMatrix matnel = matr * matovr * coordsys;
NLMISC::CQuat finalquat = matnel.getRot();
m_OrientationCache = finalquat;
m_OrientationCached = true;
return finalquat;
}
/// Get GUI shift
void CStereoLibVR::getInterface2DShift(uint cid, float &x, float &y, float distance) const
{
#if 0
// todo: take into account m_EyePosition
NLMISC::CVector vector = CVector(0.f, -distance, 0.f);
NLMISC::CQuat rot = getOrientation();
rot.invert();
NLMISC::CMatrix mat;
mat.rotate(rot);
//if (m_Stage % 2) mat.translate(CVector(m_DevicePtr->HMDInfo.InterpupillaryDistance * -0.5f, 0.f, 0.f));
//else mat.translate(CVector(m_DevicePtr->HMDInfo.InterpupillaryDistance * 0.5f, 0.f, 0.f));
mat.translate(vector);
CVector proj = CStereoOVR::getCurrentFrustum(cid).project(mat.getPos());
NLMISC::CVector ipd;
if (m_Stage % 2) ipd = CVector(m_DevicePtr->HMDInfo.InterpupillaryDistance * -0.5f, 0.f, 0.f);
else ipd = CVector(m_DevicePtr->HMDInfo.InterpupillaryDistance * 0.5f, 0.f, 0.f);
CVector projipd = CStereoOVR::getCurrentFrustum(cid).project(vector + ipd);
CVector projvec = CStereoOVR::getCurrentFrustum(cid).project(vector);
x = (proj.x + projipd.x - projvec.x - 0.5f);
y = (proj.y + projipd.y - projvec.y - 0.5f);
#elif 1
// Alternative method
// todo: take into account m_EyePosition
NLMISC::CVector vec = CVector(0.f, -distance, 0.f);
NLMISC::CVector ipd;
if (m_Stage % 2) ipd = CVector((m_DevicePtr->InterpupillaryDistance * m_Scale) * -0.5f, 0.f, 0.f);
else ipd = CVector((m_DevicePtr->InterpupillaryDistance * m_Scale) * 0.5f, 0.f, 0.f);
NLMISC::CQuat rot = getOrientation();
NLMISC::CQuat modrot = NLMISC::CQuat(CVector(0.f, 1.f, 0.f), NLMISC::Pi);
rot = rot * modrot;
float p = NLMISC::Pi + atan2f(2.0f * ((rot.x * rot.y) + (rot.z * rot.w)), 1.0f - 2.0f * ((rot.y * rot.y) + (rot.w * rot.w)));
if (p > NLMISC::Pi) p -= NLMISC::Pi * 2.0f;
float t = -atan2f(2.0f * ((rot.x * rot.w) + (rot.y * rot.z)), 1.0f - 2.0f * ((rot.z * rot.z) + (rot.w * rot.w)));// // asinf(2.0f * ((rot.x * rot.z) - (rot.w * rot.y)));
CVector rotshift = CVector(p, 0.f, t) * -distance;
CVector proj = CStereoLibVR::getCurrentFrustum(cid).project(vec + ipd + rotshift);
x = (proj.x - 0.5f);
y = (proj.y - 0.5f);
#endif
}
void CStereoLibVR::setEyePosition(const NLMISC::CVector &v)
{
m_EyePosition = v;
}
const NLMISC::CVector &CStereoLibVR::getEyePosition() const
{
return m_EyePosition;
}
void CStereoLibVR::setScale(float s)
{
m_EyePosition = m_EyePosition * (s / m_Scale);
m_Scale = s;
}
void CStereoLibVR::listDevices(std::vector<CStereoDeviceInfo> &devicesOut)
{
// For now, LibVR doesn't support multiple devices
struct hmd *hmd = hmd_open_first(0);
if (hmd)
{
CStereoDeviceInfo deviceInfoOut;
CStereoLibVRDeviceHandle *handle = new CStereoLibVRDeviceHandle();
deviceInfoOut.Factory = static_cast<IStereoDeviceFactory *>(handle);
deviceInfoOut.Class = CStereoDeviceInfo::StereoHMD;
deviceInfoOut.Library = CStereoDeviceInfo::LibVR;
//TODO: manufacturer, produc name
//TODO: serial
devicesOut.push_back(deviceInfoOut);
hmd_close(hmd);
}
}
bool CStereoLibVR::isLibraryInUse()
{
nlassert(s_DeviceCounter >= 0);
return s_DeviceCounter > 0;
}
void CStereoLibVR::releaseLibrary()
{
nlassert(s_DeviceCounter == 0);
}
bool CStereoLibVR::isDeviceCreated()
{
return m_DevicePtr->HMDDevice != NULL;
}
} /* namespace NL3D */
#endif /* HAVE_LIBVR */
/* end of file */