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Vive: smoother updates for IK driven by vive controllers

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Before this PR the simulation rate was clamped to never exceed 60htz.
This had problems when waving the vive hand controllers in the world,
they would jitter.  The simulation rate is now clamped to never exceed
120 htz.  This has the effect of synchronizing the display and the
update rates to 90htz.

Also there are improvements to vive support if threaded present is
disabled.
This commit is contained in:
Anthony Thibault 2016-02-19 15:58:13 -08:00
parent 1a8b926534
commit 942f2c13ab
2 changed files with 9 additions and 3 deletions
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3
interface/src/Application.cpp
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@ -210,7 +210,7 @@ static const QString INFO_EDIT_ENTITIES_PATH = "html/edit-commands.html";
static const unsigned int THROTTLED_SIM_FRAMERATE = 15;
static const int THROTTLED_SIM_FRAME_PERIOD_MS = MSECS_PER_SECOND / THROTTLED_SIM_FRAMERATE;
static const unsigned int CAPPED_SIM_FRAMERATE = 60;
static const unsigned int CAPPED_SIM_FRAMERATE = 120;
static const int CAPPED_SIM_FRAME_PERIOD_MS = MSECS_PER_SECOND / CAPPED_SIM_FRAMERATE;
static const uint32_t INVALID_FRAME = UINT32_MAX;
@ -1733,6 +1733,7 @@ bool Application::event(QEvent* event) {
if ((int)event->type() == (int)Paint) {
paintGL();
return true;
}
if (!_keyboardFocusedItem.isInvalidID()) {

9
plugins/openvr/src/OpenVrDisplayPlugin.cpp
View file

@ -101,9 +101,16 @@ glm::mat4 OpenVrDisplayPlugin::getHeadPose(uint32_t frameIndex) const {
float frameDuration = 1.f / displayFrequency;
float vsyncToPhotons = _system->GetFloatTrackedDeviceProperty(vr::k_unTrackedDeviceIndex_Hmd, vr::Prop_SecondsFromVsyncToPhotons_Float);
#if THREADED_PRESENT
// TODO: this seems awfuly long, 44ms total, but it produced the best results.
const float NUM_PREDICTION_FRAMES = 3.0f;
float predictedSecondsFromNow = NUM_PREDICTION_FRAMES * frameDuration + vsyncToPhotons;
#else
uint64_t frameCounter;
float timeSinceLastVsync;
_system->GetTimeSinceLastVsync(&timeSinceLastVsync, &frameCounter);
float predictedSecondsFromNow = 3.0f * frameDuration - timeSinceLastVsync + vsyncToPhotons;
#endif
vr::TrackedDevicePose_t predictedTrackedDevicePose[vr::k_unMaxTrackedDeviceCount];
_system->GetDeviceToAbsoluteTrackingPose(vr::TrackingUniverseSeated, predictedSecondsFromNow, predictedTrackedDevicePose, vr::k_unMaxTrackedDeviceCount);
@ -126,8 +133,6 @@ void OpenVrDisplayPlugin::internalPresent() {
_compositor->Submit(vr::Eye_Left, &texture, &leftBounds);
_compositor->Submit(vr::Eye_Right, &texture, &rightBounds);
glFinish();
vr::TrackedDevicePose_t currentTrackedDevicePose[vr::k_unMaxTrackedDeviceCount];
_compositor->WaitGetPoses(currentTrackedDevicePose, vr::k_unMaxTrackedDeviceCount, nullptr, 0);