Merge pull request #7395 from hyperlogic/tony/openvr-crash-on-exit

openvr crash on exit fix

interface/src/Application.cpp

@@ -1420,6 +1420,8 @@ void Application::paintGL() {
     // FIXME not needed anymore?
     _offscreenContext->makeCurrent();
 
+    displayPlugin->updateHeadPose(_frameCount);
+
     // update the avatar with a fresh HMD pose
     getMyAvatar()->updateFromHMDSensorMatrix(getHMDSensorPose());
 
@@ -1600,12 +1602,7 @@ void Application::paintGL() {
             auto baseProjection = renderArgs._viewFrustum->getProjection();
             auto hmdInterface = DependencyManager::get<HMDScriptingInterface>();
             float IPDScale = hmdInterface->getIPDScale();
-
-            // Tell the plugin what pose we're using to render.  In this case we're just using the
-            // unmodified head pose because the only plugin that cares (the Oculus plugin) uses it
-            // for rotational timewarp.  If we move to support positonal timewarp, we need to
-            // ensure this contains the full pose composed with the eye offsets.
-            mat4 headPose = displayPlugin->getHeadPose(_frameCount);
+            mat4 headPose = displayPlugin->getHeadPose();
 
             // FIXME we probably don't need to set the projection matrix every frame,
             // only when the display plugin changes (or in non-HMD modes when the user
@@ -1622,6 +1619,10 @@ void Application::paintGL() {
                 mat4 eyeOffsetTransform = glm::translate(mat4(), eyeOffset * -1.0f * IPDScale);
                 eyeOffsets[eye] = eyeOffsetTransform;
 
+                // Tell the plugin what pose we're using to render.  In this case we're just using the
+                // unmodified head pose because the only plugin that cares (the Oculus plugin) uses it
+                // for rotational timewarp.  If we move to support positonal timewarp, we need to
+                // ensure this contains the full pose composed with the eye offsets.
                 displayPlugin->setEyeRenderPose(_frameCount, eye, headPose * glm::inverse(eyeOffsetTransform));
 
                 eyeProjections[eye] = displayPlugin->getEyeProjection(eye, baseProjection);
@@ -2977,7 +2978,7 @@ void Application::updateMyAvatarLookAtPosition() {
             lookAtPosition.x = -lookAtPosition.x;
         }
         if (isHMD) {
-            glm::mat4 headPose = getActiveDisplayPlugin()->getHeadPose(_frameCount);
+            glm::mat4 headPose = getActiveDisplayPlugin()->getHeadPose();
             glm::quat hmdRotation = glm::quat_cast(headPose);
             lookAtSpot = _myCamera.getPosition() + myAvatar->getOrientation() * (hmdRotation * lookAtPosition);
         } else {
@@ -4929,7 +4930,7 @@ mat4 Application::getEyeOffset(int eye) const {
 
 mat4 Application::getHMDSensorPose() const {
     if (isHMDMode()) {
-        return getActiveDisplayPlugin()->getHeadPose(_frameCount);
+        return getActiveDisplayPlugin()->getHeadPose();
     }
     return mat4();
 }

interface/src/avatar/AvatarUpdate.cpp

@@ -30,7 +30,6 @@ void AvatarUpdate::synchronousProcess() {
 
     // Keep our own updated value, so that our asynchronous code can consult it.
     _isHMDMode = qApp->isHMDMode();
-    auto frameCount = qApp->getFrameCount();
 
     QSharedPointer<AvatarManager> manager = DependencyManager::get<AvatarManager>();
     MyAvatar* myAvatar = manager->getMyAvatar();
@@ -38,7 +37,7 @@ void AvatarUpdate::synchronousProcess() {
 
     // transform the head pose from the displayPlugin into avatar coordinates.
     glm::mat4 invAvatarMat = glm::inverse(createMatFromQuatAndPos(myAvatar->getOrientation(), myAvatar->getPosition()));
-    _headPose = invAvatarMat * (myAvatar->getSensorToWorldMatrix() * qApp->getActiveDisplayPlugin()->getHeadPose(frameCount));
+    _headPose = invAvatarMat * (myAvatar->getSensorToWorldMatrix() * qApp->getActiveDisplayPlugin()->getHeadPose());
 
     if (!isThreaded()) {
         process();

interface/src/avatar/MyAvatar.cpp

@@ -1258,7 +1258,7 @@ void MyAvatar::renderBody(RenderArgs* renderArgs, ViewFrustum* renderFrustum, fl
     if (qApp->isHMDMode()) {
         glm::vec3 cameraPosition = qApp->getCamera()->getPosition();
 
-        glm::mat4 headPose = qApp->getActiveDisplayPlugin()->getHeadPose(qApp->getFrameCount());
+        glm::mat4 headPose = qApp->getActiveDisplayPlugin()->getHeadPose();
         glm::mat4 leftEyePose = qApp->getActiveDisplayPlugin()->getEyeToHeadTransform(Eye::Left);
         leftEyePose = leftEyePose * headPose;
         glm::vec3 leftEyePosition = extractTranslation(leftEyePose);

libraries/display-plugins/src/display-plugins/CompositorHelper.cpp

@@ -342,7 +342,7 @@ void CompositorHelper::computeHmdPickRay(const glm::vec2& cursorPos, glm::vec3&
 }
 
 glm::mat4 CompositorHelper::getUiTransform() const {
-    return _currentCamera * glm::inverse(_currentDisplayPlugin->getHeadPose(_currentFrame));
+    return _currentCamera * glm::inverse(_currentDisplayPlugin->getHeadPose());
 }
 
 //Finds the collision point of a world space ray

libraries/display-plugins/src/display-plugins/hmd/HmdDisplayPlugin.cpp

@@ -160,4 +160,8 @@ void HmdDisplayPlugin::updateFrameData() {
     Parent::updateFrameData();
     Lock lock(_mutex);
     _currentRenderEyePoses = _renderEyePoses[_currentRenderFrameIndex];
-}
+}
+
+glm::mat4 HmdDisplayPlugin::getHeadPose() const {
+    return _headPoseCache.get();
+}

libraries/display-plugins/src/display-plugins/hmd/HmdDisplayPlugin.h

@@ -7,6 +7,8 @@
 //
 #pragma once
 
+#include <ThreadSafeValueCache.h>
+
 #include <QtGlobal>
 
 #include "../OpenGLDisplayPlugin.h"
@@ -24,7 +26,7 @@ public:
     void setEyeRenderPose(uint32_t frameIndex, Eye eye, const glm::mat4& pose) override final;
     bool isDisplayVisible() const override { return isHmdMounted(); }
 
-
+    virtual glm::mat4 getHeadPose() const override;
 
 protected:
     virtual void hmdPresent() = 0;
@@ -46,6 +48,7 @@ protected:
     using EyePoses = std::array<glm::mat4, 2>;
     QMap<uint32_t, EyePoses> _renderEyePoses;
     EyePoses _currentRenderEyePoses;
+    ThreadSafeValueCache<glm::mat4> _headPoseCache { glm::mat4() };
 
 private:
     bool _enablePreview { false };

libraries/plugins/src/plugins/DisplayPlugin.h

@@ -121,8 +121,12 @@ public:
         static const glm::mat4 transform; return transform;
     }
 
-    virtual glm::mat4 getHeadPose(uint32_t frameIndex) const {
-        static const glm::mat4 pose; return pose;
+    // will query the underlying hmd api to compute the most recent head pose
+    virtual void updateHeadPose(uint32_t frameIndex) {}
+
+    // returns a copy of the most recent head pose, computed via updateHeadPose
+    virtual glm::mat4 getHeadPose() const {
+        return glm::mat4();
     }
 
     // Needed for timewarp style features

plugins/oculus/src/OculusBaseDisplayPlugin.cpp

@@ -15,14 +15,11 @@ void OculusBaseDisplayPlugin::resetSensors() {
     ovr_RecenterPose(_session);
 }
 
-glm::mat4 OculusBaseDisplayPlugin::getHeadPose(uint32_t frameIndex) const {
-    static uint32_t lastFrameSeen = 0;
+void OculusBaseDisplayPlugin::updateHeadPose(uint32_t frameIndex) {
     auto displayTime = ovr_GetPredictedDisplayTime(_session, frameIndex);
-    auto trackingState = ovr_GetTrackingState(_session, displayTime, frameIndex > lastFrameSeen);
-    if (frameIndex > lastFrameSeen) {
-        lastFrameSeen = frameIndex;
-    }
-    return toGlm(trackingState.HeadPose.ThePose);
+    auto trackingState = ovr_GetTrackingState(_session, displayTime, true);
+    mat4 headPose = toGlm(trackingState.HeadPose.ThePose);
+    _headPoseCache.set(headPose);
 }
 
 bool OculusBaseDisplayPlugin::isSupported() const {

plugins/oculus/src/OculusBaseDisplayPlugin.h

@@ -20,7 +20,7 @@ public:
 
     // Stereo specific methods
     virtual void resetSensors() override final;
-    virtual glm::mat4 getHeadPose(uint32_t frameIndex) const override;
+    virtual void updateHeadPose(uint32_t frameIndex) override;
 
 protected:
     void customizeContext() override;

plugins/oculusLegacy/src/OculusLegacyDisplayPlugin.cpp

@@ -35,14 +35,10 @@ void OculusLegacyDisplayPlugin::resetSensors() {
     ovrHmd_RecenterPose(_hmd);
 }
 
-glm::mat4 OculusLegacyDisplayPlugin::getHeadPose(uint32_t frameIndex) const {
-    static uint32_t lastFrameSeen = 0;
-    if (frameIndex > lastFrameSeen) {
-        Lock lock(_mutex);
-        _trackingState = ovrHmd_GetTrackingState(_hmd, ovr_GetTimeInSeconds());
-        lastFrameSeen = frameIndex;
-    }
-    return toGlm(_trackingState.HeadPose.ThePose);
+void OculusLegacyDisplayPlugin::updateHeadPose(uint32_t frameIndex) {
+    Lock lock(_mutex);
+    _trackingState = ovrHmd_GetTrackingState(_hmd, ovr_GetTimeInSeconds());
+    _headPoseCache.set(toGlm(_trackingState.HeadPose.ThePose));
 }
 
 bool OculusLegacyDisplayPlugin::isSupported() const {

plugins/oculusLegacy/src/OculusLegacyDisplayPlugin.h

@@ -26,7 +26,7 @@ public:
 
     // Stereo specific methods
     virtual void resetSensors() override;
-    virtual glm::mat4 getHeadPose(uint32_t frameIndex) const override;
+    virtual void updateHeadPose(uint32_t frameIndex) override;
 
     virtual float getTargetFrameRate() override;
 

plugins/openvr/src/OpenVrDisplayPlugin.cpp

@@ -112,7 +112,7 @@ void OpenVrDisplayPlugin::resetSensors() {
     _sensorResetMat = glm::inverse(cancelOutRollAndPitch(m));
 }
 
-glm::mat4 OpenVrDisplayPlugin::getHeadPose(uint32_t frameIndex) const {
+void OpenVrDisplayPlugin::updateHeadPose(uint32_t frameIndex) {
 
     float displayFrequency = _system->GetFloatTrackedDeviceProperty(vr::k_unTrackedDeviceIndex_Hmd, vr::Prop_DisplayFrequency_Float);
     float frameDuration = 1.f / displayFrequency;
@@ -139,14 +139,15 @@ glm::mat4 OpenVrDisplayPlugin::getHeadPose(uint32_t frameIndex) const {
         _trackedDeviceLinearVelocities[i] = transformVectorFast(_sensorResetMat, toGlm(_trackedDevicePose[i].vVelocity));
         _trackedDeviceAngularVelocities[i] = transformVectorFast(_sensorResetMat, toGlm(_trackedDevicePose[i].vAngularVelocity));
     }
-    return _trackedDevicePoseMat4[0];
+
+    _headPoseCache.set(_trackedDevicePoseMat4[0]);
 }
 
 void OpenVrDisplayPlugin::hmdPresent() {
     // Flip y-axis since GL UV coords are backwards.
     static vr::VRTextureBounds_t leftBounds{ 0, 0, 0.5f, 1 };
     static vr::VRTextureBounds_t rightBounds{ 0.5f, 0, 1, 1 };
-    
+
     vr::Texture_t texture { (void*)oglplus::GetName(_compositeFramebuffer->color), vr::API_OpenGL, vr::ColorSpace_Auto };
 
     _compositor->Submit(vr::Eye_Left, &texture, &leftBounds);

plugins/openvr/src/OpenVrDisplayPlugin.h

@@ -27,7 +27,7 @@ public:
 
     // Stereo specific methods
     virtual void resetSensors() override;
-    virtual glm::mat4 getHeadPose(uint32_t frameIndex) const override;
+    virtual void updateHeadPose(uint32_t frameIndex) override;
 
 protected:
     void internalActivate() override;