void FrameTimeManagerCore::SubmitDisplayFrame( unsigned displayFrameIndex,
unsigned appFrameIndex,
double scanoutStartSeconds )
{
int displayFrameDelta = (displayFrameIndex - LastTiming.DisplayFrameIndex);
// FIXME: Add queue ahead support here by detecting two frames targeting the same scanout.
// Update frameDelta tracking.
if ((LastTiming.FrameSubmitSeconds > 0.0) && (displayFrameDelta < 2))
{
if (displayFrameDelta > 0)
{
double thisFrameDelta = (scanoutStartSeconds - LastTiming.FrameSubmitSeconds) / displayFrameDelta;
FrameTimeDeltas.Add(thisFrameDelta);
}
LastTiming.FrameDelta = calcFrameDelta();
}
// Update indices mapping
FrameIndices.Add(displayFrameIndex, appFrameIndex);
LastTiming.AppFrameIndex = appFrameIndex;
LastTiming.DisplayFrameIndex = displayFrameIndex;
LastTiming.FrameSubmitSeconds = scanoutStartSeconds;
LastTiming.AppToDisplayFrameRatio = FrameIndices.GetAppToDisplayFrameRatio();
// Update Lockless
LocklessTiming.SetState(LastTiming);
}
void FrameTimeManager::EndFrame()
{
// Record timing since last frame; must be called after Present & sync.
FrameTiming.NextFrameTime = ovr_GetTimeInSeconds();
if (FrameTiming.ThisFrameTime > 0.0)
{
FrameTimeDeltas.AddTimeDelta(FrameTiming.NextFrameTime - FrameTiming.ThisFrameTime);
FrameTiming.Inputs.FrameDelta = calcFrameDelta();
}
// Write to Lock-less
LocklessTiming.SetState(FrameTiming);
}
void FrameTimeManager::ResetFrameTiming(unsigned frameIndex,
bool dynamicPrediction,
bool sdkRender)
{
DynamicPrediction = dynamicPrediction;
SdkRender = sdkRender;
FrameTimeDeltas.Clear();
DistortionRenderTimes.Clear();
ScreenLatencyTracker.Reset();
FrameTiming.FrameIndex = frameIndex;
FrameTiming.NextFrameTime = 0.0;
FrameTiming.ThisFrameTime = 0.0;
FrameTiming.Inputs.FrameDelta = calcFrameDelta();
FrameTiming.Inputs.ScreenDelay = calcScreenDelay();
FrameTiming.Inputs.TimewarpWaitDelta = 0.0f;
LocklessTiming.SetState(FrameTiming);
}
void FrameTimeManager::EndFrame()
{
// Record timing since last frame; must be called after Present & sync.
FrameTiming.NextFrameTime = ovr_GetTimeInSeconds();
if (FrameTiming.ThisFrameTime > 0.0)
{
//Revisit dynamic pre-Timewarp delay adjustment logic
/*
double actualFrameDelta = FrameTiming.NextFrameTime - FrameTiming.ThisFrameTime;
if (VsyncEnabled)
TimewarpAdjuster.UpdateTimewarpWaitIfSkippedFrames(this, actualFrameDelta,
FrameTiming.NextFrameTime);
FrameTimeDeltas.AddTimeDelta(actualFrameDelta);
*/
FrameTimeDeltas.AddTimeDelta(FrameTiming.NextFrameTime - FrameTiming.ThisFrameTime);
FrameTiming.Inputs.FrameDelta = calcFrameDelta();
}
// Write to Lock-less
LocklessTiming.SetState(FrameTiming);
}
void FrameTimeManager::ResetFrameTiming(unsigned frameIndex,
bool dynamicPrediction,
bool sdkRender)
{
DynamicPrediction = dynamicPrediction;
SdkRender = sdkRender;
FrameTimeDeltas.Clear();
DistortionRenderTimes.Clear();
ScreenLatencyTracker.Reset();
//Revisit dynamic pre-Timewarp delay adjustment logic
//TimewarpAdjuster.Reset();
FrameTiming.FrameIndex = frameIndex;
FrameTiming.NextFrameTime = 0.0;
FrameTiming.ThisFrameTime = 0.0;
FrameTiming.Inputs.FrameDelta = calcFrameDelta();
// This one is particularly critical, and has been missed in the past because
// this init function wasn't called for app-rendered.
FrameTiming.Inputs.ScreenDelay = calcScreenDelay();
FrameTiming.Inputs.TimewarpWaitDelta = 0.0f;
LocklessTiming.SetState(FrameTiming);
}