void OgreNode::updateFBO()
{
Ogre::TexturePtr rttTexture = mRenderSystem->getRtt("RttTex", mSize.width(), mSize.height());
mRenderTarget = rttTexture->getBuffer()->getRenderTarget();
Ogre::Camera* cam = mRenderSystem->getOgreCamera();
mRenderTarget->addViewport(cam);
Ogre::Real aspectRatio = Ogre::Real(mSize.width()) / Ogre::Real(mSize.height());
cam->setAspectRatio(aspectRatio);
QSGGeometry::updateTexturedRectGeometry(&mGeometry,
QRectF(0, 0, mSize.width(), mSize.height()),
QRectF(0, 0, 1, 1));
Ogre::GLTexture *nativeTexture = static_cast<Ogre::GLTexture *>(rttTexture.get());
delete mTexture;
mTexture = mQuickWindow->createTextureFromId(nativeTexture->getGLID(), mSize);
mMaterial.setTexture(mTexture);
mMaterialO.setTexture(mTexture);
LOG(INFO) << "Updated FBO, new size: " << mSize.width() << "x" << mSize.height() << ", texture id: " << nativeTexture->getGLID();
}
// ----------------------------------------------------------------
// renders the frame
// ----------------------------------------------------------------
void OgreOpenVR::update()
{
// update the parent camera node's orientation and position with the new tracking data
Ogre::Quaternion q = m_orientation;
Ogre::Quaternion q_hack; q_hack.FromAngleAxis(Ogre::Radian(Ogre::Degree(180)), Ogre::Vector3::UNIT_Y);
if (!lockToCamera && m_waist != NULL)
{
q = q_hack * m_mat4HMDPose.extractQuaternion() * m_waist->getOrientation();
}
else if (!lockToCamera)
{
q = q * m_mat4HMDPose.extractQuaternion();
}
m_cameraNode->setOrientation(q);
//m_position = m_mat4HMDPose.getTrans();
m_cameraNode->setPosition(m_position); // -m_poseNeutralPosition);
Ogre::Root::getSingleton().renderOneFrame();
Ogre::GLTexture* gt = ((Ogre::GLTexture*)m_ogreRenderTexture.get());
GLuint srcid = gt->getGLID();
// In OpenGL, the render texture comes out topside-bottomwards.
// u1 v1 u2 v2
const vr::VRTextureBounds_t lbounds = { 0.0f, 1.0f, 0.5f, 0.0f };
const vr::VRTextureBounds_t rbounds = { 0.5f, 1.0f, 1.0f, 0.0f };
vr::Texture_t stereoTexture = { (void*)srcid, vr::API_OpenGL, vr::ColorSpace_Gamma };
vr::VRCompositor()->Submit(vr::Eye_Left, &stereoTexture, &lbounds);
vr::VRCompositor()->Submit(vr::Eye_Right, &stereoTexture, &rbounds);
if (m_recording)
{
static auto pre = boost::posix_time::microsec_clock::local_time();
static auto now = boost::posix_time::microsec_clock::local_time();
now = boost::posix_time::microsec_clock::local_time();
if ((now - pre).total_milliseconds() > 40)
{
pre = now;
static uint8_t *rgb = NULL;
static GLubyte * pixels = NULL;
ffmpeg_encoder_glread_rgb(&rgb, &pixels, m_window->getWidth(), m_window->getHeight());
//ffmpeg_encoder_glgettexture_rgb(&rgb, &pixels, srcid, gt->getWidth(), gt->getHeight());
ffmpeg_encoder_encode_frame(rgb);
}
}
glFlush();
glFinish();
m_frameIndex++;
// update the tracked device positions
updateHMDPos();
}
int OgreOculus::go(void)
{
// Create Root object
root = new Ogre::Root("plugin.cfg", "ogre.cfg");
// OpenGL
root->loadPlugin("RenderSystem_GL_d");
root->setRenderSystem(root->getRenderSystemByName("OpenGL Rendering Subsystem"));
// Initialize Root
root->initialise(false);
// Initialize Oculus
ovrHmd hmd;
ovrHmdDesc hmdDesc;
ovrGraphicsLuid luid;
ovr_Initialize(nullptr);
if(ovr_Create(&hmd, &luid) != ovrSuccess)
exit(-1);
hmdDesc = ovr_GetHmdDesc(hmd);
if(ovr_ConfigureTracking(hmd,
ovrTrackingCap_Orientation |ovrTrackingCap_MagYawCorrection |ovrTrackingCap_Position,
0) != ovrSuccess)
exit(-2);
// Turn off HUD
ovr_SetInt(hmd, "PerfHudMode", ovrPerfHud_Off);
// Create a window
window = root->createRenderWindow("Ogre + Oculus = <3", hmdDesc.Resolution.w/2, hmdDesc.Resolution.h/2, false);
// Create scene manager and cameras
smgr = root->createSceneManager(Ogre::ST_GENERIC);
// Load Ogre resource paths from config file
Ogre::ConfigFile cf;
cf.load("resources_d.cfg");
// Go through all sections & settings in the file and add resources
Ogre::ConfigFile::SectionIterator seci = cf.getSectionIterator();
Ogre::String secName, typeName, archName;
while (seci.hasMoreElements())
{
secName = seci.peekNextKey();
Ogre::ConfigFile::SettingsMultiMap *settings = seci.getNext();
Ogre::ConfigFile::SettingsMultiMap::iterator i;
for (i = settings->begin(); i != settings->end(); ++i)
{
typeName = i->first;
archName = i->second;
Ogre::ResourceGroupManager::getSingleton().addResourceLocation(
archName, typeName, secName);
}
}
// Set resources
Ogre::TextureManager::getSingleton().setDefaultNumMipmaps(5);
Ogre::ResourceGroupManager::getSingleton().initialiseAllResourceGroups();
// Create the model itself via OgreModel.cpp
createOgreModel(smgr);
// Create camera
createCamera();
// Set viewport and background color
Ogre::Viewport* vp = window->addViewport(mCamera);
vp->setBackgroundColour(Ogre::ColourValue(34, 89, 0)); // Yellow
// Set aspect ratio
mCamera->setAspectRatio(
Ogre::Real(vp->getActualWidth()) /
Ogre::Real(vp->getActualHeight()));
// Initialize glew
if(glewInit() != GLEW_OK)
exit(-3);
// Get texture sizes
ovrSizei texSizeL, texSizeR;
texSizeL = ovr_GetFovTextureSize(hmd, ovrEye_Left, hmdDesc.DefaultEyeFov[left], 1);
texSizeR = ovr_GetFovTextureSize(hmd, ovrEye_Right, hmdDesc.DefaultEyeFov[right], 1);
// Calculate render buffer size
ovrSizei bufferSize;
bufferSize.w = texSizeL.w + texSizeR.w;
bufferSize.h = max(texSizeL.h, texSizeR.h);
// Create render texture set
ovrSwapTextureSet* textureSet;
if(ovr_CreateSwapTextureSetGL(hmd, GL_RGB, bufferSize.w, bufferSize.h, &textureSet) != ovrSuccess)
exit(-4);
// Create Ogre render texture
Ogre::GLTextureManager* textureManager = static_cast<Ogre::GLTextureManager*>(Ogre::GLTextureManager::getSingletonPtr());
Ogre::TexturePtr rtt_texture(textureManager->createManual("RttTex", Ogre::ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME,
Ogre::TEX_TYPE_2D, bufferSize.w, bufferSize.h, 0, Ogre::PF_R8G8B8, Ogre::TU_RENDERTARGET));
Ogre::RenderTexture* rttEyes = rtt_texture->getBuffer(0, 0)->getRenderTarget();
Ogre::GLTexture* gltex = static_cast<Ogre::GLTexture*>(Ogre::GLTextureManager::getSingleton().getByName("RttTex").getPointer());
GLuint renderTextureID = gltex->getGLID();
// Put camera viewport on the ogre render texture
Ogre::Viewport* vpts[nbEyes];
vpts[left]=rttEyes->addViewport(cams[left], 0, 0, 0, 0.5f);
vpts[right]=rttEyes->addViewport(cams[right], 1, 0.5f, 0, 0.5f);
vpts[left]->setBackgroundColour(Ogre::ColourValue(34, 89, 0)); // Black background
vpts[right]->setBackgroundColour(Ogre::ColourValue(34, 89, 0));
ovrTexture* mirrorTexture;
if(ovr_CreateMirrorTextureGL(hmd, GL_RGB, hmdDesc.Resolution.w, hmdDesc.Resolution.h, &mirrorTexture) != ovrSuccess)
exit(-5);
Ogre::TexturePtr mirror_texture(textureManager->createManual("MirrorTex", Ogre::ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME,
Ogre::TEX_TYPE_2D, hmdDesc.Resolution.w, hmdDesc.Resolution.h, 0, Ogre::PF_R8G8B8, Ogre::TU_RENDERTARGET));
// Get GLIDs
GLuint ogreMirrorTextureID = static_cast<Ogre::GLTexture*>(Ogre::GLTextureManager::getSingleton().getByName("MirrorTex").getPointer())->getGLID();
GLuint oculusMirrorTextureID = ((ovrGLTexture*)mirrorTexture)->OGL.TexId;
// Create EyeRenderDesc
ovrEyeRenderDesc EyeRenderDesc[nbEyes];
EyeRenderDesc[left] = ovr_GetRenderDesc(hmd, ovrEye_Left, hmdDesc.DefaultEyeFov[left]);
EyeRenderDesc[right] = ovr_GetRenderDesc(hmd, ovrEye_Right, hmdDesc.DefaultEyeFov[right]);
// Get offsets
ovrVector3f offset[nbEyes];
offset[left]=EyeRenderDesc[left].HmdToEyeViewOffset;
offset[right]=EyeRenderDesc[right].HmdToEyeViewOffset;
// Compositor layer
ovrLayerEyeFov layer;
layer.Header.Type = ovrLayerType_EyeFov;
layer.Header.Flags = 0;
layer.ColorTexture[left] = textureSet;
layer.ColorTexture[right] = textureSet;
layer.Fov[left] = EyeRenderDesc[left].Fov;
layer.Fov[right] = EyeRenderDesc[right].Fov;
layer.Viewport[left] = OVR::Recti(0, 0, bufferSize.w/2, bufferSize.h);
layer.Viewport[right] = OVR::Recti(bufferSize.w/2, 0, bufferSize.w/2, bufferSize.h);
// Get projection matrices
for(size_t eyeIndex(0); eyeIndex < ovrEye_Count; eyeIndex++)
{
// Get the projection matrix
OVR::Matrix4f proj = ovrMatrix4f_Projection(EyeRenderDesc[eyeIndex].Fov,
static_cast<float>(0.01f),
4000,
true);
// Convert it to Ogre matrix
Ogre::Matrix4 OgreProj;
for(size_t x(0); x < 4; x++)
for(size_t y(0); y < 4; y++)
OgreProj[x][y] = proj.M[x][y];
// Set the matrix
cams[eyeIndex]->setCustomProjectionMatrix(true, OgreProj);
}
// Variables for render loop
bool render(true);
ovrFrameTiming hmdFrameTiming;
ovrTrackingState ts;
OVR::Posef pose;
ovrLayerHeader* layers;
// Create event listener for handling user input
createEventListener();
//Run physics loop in a new thread
std::map<Ogre::Entity*, Ogre::Vector3> positionRequests;
std::map<Ogre::Entity*, std::string> animationRequests;
std::map<Ogre::Entity*, std::vector<int>> rotationRequests;
std::map<std::string, std::string> message;
std::thread physicsThread(physicsLoop, smgr, &message, &positionRequests, &animationRequests, &rotationRequests);
// Render loop
while(render)
{
// Suspend physics loop and perform requested movement/rotations/animations
if(positionRequests.size() > 0 || animationRequests.size() > 0 || rotationRequests.size() > 0){
message.insert(std::pair<std::string, std::string>("", ""));
for(auto const &request : positionRequests) {
Ogre::Vector3 pos = request.second;
Ogre::SceneNode* sceneNode = request.first->getParentSceneNode();
sceneNode->setPosition(pos);
}
for(auto const &request : animationRequests) {
request.first->getAnimationState(request.second)->addTime(0.1);
}
for(auto const &request : rotationRequests) {
Ogre::SceneNode* sceneNode = request.first->getParentSceneNode();
sceneNode->roll(Ogre::Degree(request.second[0]));
sceneNode->pitch(Ogre::Degree(request.second[1]));
sceneNode->yaw(Ogre::Degree(request.second[2]));
}
positionRequests.clear();
animationRequests.clear();
rotationRequests.clear();
// Resume physics loop
message.clear();
}
// Update Ogre window
Ogre::WindowEventUtilities::messagePump();
// Advance textureset index
textureSet->CurrentIndex = (textureSet->CurrentIndex + 1) % textureSet->TextureCount;
// Capture user input
mKeyboard->capture();
mMouse->capture();
// Movement calculations
mPlayerNode->translate(mDirection, Ogre::Node::TS_LOCAL);
hmdFrameTiming = ovr_GetFrameTiming(hmd, 0);
ts = ovr_GetTrackingState(hmd, hmdFrameTiming.DisplayMidpointSeconds);
pose = ts.HeadPose.ThePose;
ovr_CalcEyePoses(pose, offset, layer.RenderPose);
oculusOrient = pose.Rotation;
oculusPos = pose.Translation;
mHeadNode->setOrientation(Ogre::Quaternion(oculusOrient.w, oculusOrient.x, oculusOrient.y, oculusOrient.z) * initialOculusOrientation.Inverse());
// Apply head tracking
mHeadNode->setPosition(headPositionTrackingSensitivity * Ogre::Vector3(oculusPos.x, oculusPos.y,oculusPos.z));
// Update Ogre viewports
root->_fireFrameRenderingQueued();
vpts[left]->update();
vpts[right]->update();
// Copy the rendered image to the Oculus Swap Texture
glCopyImageSubData(renderTextureID, GL_TEXTURE_2D, 0, 0, 0, 0,
((ovrGLTexture*)(&textureSet->Textures[textureSet->CurrentIndex]))->OGL.TexId, GL_TEXTURE_2D, 0, 0, 0, 0,
bufferSize.w,bufferSize.h, 1);
layers = &layer.Header;
// Submit new frame to the Oculus and update window
ovr_SubmitFrame(hmd, 0, nullptr, &layers, 1);
window->update();
// Exit loop when window is closed
if(window->isClosed()) render = false;
}
// Shud down Oculus
ovr_Destroy(hmd);
ovr_Shutdown();
// Delete Ogre root and return
delete root;
return EXIT_SUCCESS;
}
