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Fix for Oculus timewarp judder introduced by 20d784ba39

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Moved myAvatar->updateFromHMDSensorMatrix from Application::update
back into Application::paintGL, so it occurs between
displayPlugin->preRender() and displayPlugin->display().

We should render with the most up-to-date camera position as possible,
and sample it at the same frequency as the display rate.
This commit is contained in:
Anthony J. Thibault 2015-09-28 14:38:03 -07:00
parent 2d477ad3b9
commit e32eb38c3b
3 changed files with 15 additions and 5 deletions
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6
interface/src/Application.cpp
View file

@ -1055,6 +1055,9 @@ void Application::paintGL() {
displayPlugin->preRender();
_offscreenContext->makeCurrent();
// update the avatar with a fresh HMD pose
_myAvatar->updateFromHMDSensorMatrix(getHMDSensorPose());
auto lodManager = DependencyManager::get<LODManager>();
@ -2895,9 +2898,6 @@ void Application::update(float deltaTime) {
userInputMapper->getActionState(UserInputMapper::SHIFT), RIGHT_HAND_INDEX);
}
// update the avatar with a fresh HMD pose
_myAvatar->updateFromHMDSensorMatrix(getHMDSensorPose(), deltaTime);
updateThreads(deltaTime); // If running non-threaded, then give the threads some time to process...
updateCamera(deltaTime); // handle various camera tweaks like off axis projection

10
interface/src/avatar/MyAvatar.cpp
View file

@ -272,7 +272,15 @@ glm::mat4 MyAvatar::getSensorToWorldMatrix() const {
// best called at start of main loop just after we have a fresh hmd pose.
// update internal body position from new hmd pose.
void MyAvatar::updateFromHMDSensorMatrix(const glm::mat4& hmdSensorMatrix, float deltaTime) {
void MyAvatar::updateFromHMDSensorMatrix(const glm::mat4& hmdSensorMatrix) {
auto now = usecTimestampNow();
auto deltaUsecs = now - _lastUpdateFromHMDTime;
_lastUpdateFromHMDTime = now;
double actualDeltaTime = (double)deltaUsecs / (double)USECS_PER_SECOND;
const float BIGGEST_DELTA_TIME_SECS = 0.25f;
float deltaTime = glm::clamp((float)actualDeltaTime, 0.0f, BIGGEST_DELTA_TIME_SECS);
// update the sensorMatrices based on the new hmd pose
_hmdSensorMatrix = hmdSensorMatrix;
_hmdSensorPosition = extractTranslation(hmdSensorMatrix);

4
interface/src/avatar/MyAvatar.h
View file

@ -68,7 +68,7 @@ public:
// best called at start of main loop just after we have a fresh hmd pose.
// update internal body position from new hmd pose.
void updateFromHMDSensorMatrix(const glm::mat4& hmdSensorMatrix, float deltaTime);
void updateFromHMDSensorMatrix(const glm::mat4& hmdSensorMatrix);
// best called at end of main loop, just before rendering.
// update sensor to world matrix from current body position and hmd sensor.
@ -361,6 +361,8 @@ private:
bool _straightingLean = false;
float _straightingLeanAlpha = 0.0f;
quint64 _lastUpdateFromHMDTime = usecTimestampNow();
};
QScriptValue audioListenModeToScriptValue(QScriptEngine* engine, const AudioListenerMode& audioListenerMode);