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[idd] scheduler: pace secondary frame delivery

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This commit is contained in:
Geoffrey McRae
2026-08-05 17:10:35 +10:00
parent c7ed04412e
commit f95c8f0660
5 changed files with 422 additions and 181 deletions
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67
idd/LGIdd/CSwapChainProcessor.cpp
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@@ -231,11 +231,15 @@ void CSwapChainProcessor::PublisherThread()
m_devContext->GetPublishTarget(
now, target, schedule, periodic, republish);
if (!HasReadyCandidate())
const bool ready = HasReadyCandidate();
if (!ready)
{
m_devContext->ProcessFrameQueue();
if (HasReadyCandidate())
continue;
if (republish && m_devContext->HasPublishedFrame())
{
m_devContext->ProcessFrameQueue();
if (m_devContext->RepublishFrameBuffer(schedule))
continue;
@@ -247,6 +251,37 @@ void CSwapChainProcessor::PublisherThread()
continue;
}
const uint64_t replayNow = CFrameScheduler::Nanotime();
uint64_t replayTarget;
if (m_devContext->GetSharedFrameTarget(replayNow, replayTarget))
{
bool retry = false;
if (replayTarget <= replayNow)
{
if (m_devContext->ReplaySharedFrame(replayNow, retry))
continue;
if (!retry)
{
if (m_publishTimer.Get())
CancelWaitableTimer(m_publishTimer.Get());
if (WaitForMultipleObjects(
ARRAYSIZE(idleHandles), idleHandles, FALSE, INFINITE) ==
WAIT_OBJECT_0)
break;
continue;
}
}
const uint64_t delay = replayTarget > replayNow ?
replayTarget - replayNow : PUBLISH_RETRY_NS;
ArmPublishTimer(m_publishTimer.Get(), delay);
if (WaitForMultipleObjects(
ARRAYSIZE(timerHandles), timerHandles, FALSE, INFINITE) ==
WAIT_OBJECT_0)
break;
continue;
}
if (m_publishTimer.Get())
CancelWaitableTimer(m_publishTimer.Get());
if (WaitForMultipleObjects(
@@ -256,6 +291,34 @@ void CSwapChainProcessor::PublisherThread()
continue;
}
uint64_t replayTarget;
if (m_devContext->GetSharedFrameTarget(now, replayTarget) &&
replayTarget < target)
{
if (replayTarget <= now)
{
m_devContext->ProcessFrameQueue();
bool retry = false;
if (m_devContext->ReplaySharedFrame(
CFrameScheduler::Nanotime(), retry))
continue;
if (retry)
replayTarget = now + PUBLISH_RETRY_NS;
else
replayTarget = target;
}
const uint64_t delay = replayTarget > now ?
replayTarget - now : PUBLISH_RETRY_NS;
ArmPublishTimer(m_publishTimer.Get(), delay);
if (WaitForMultipleObjects(
ARRAYSIZE(timerHandles), timerHandles, FALSE, INFINITE) ==
WAIT_OBJECT_0)
break;
continue;
}
if (target > now)
{
ArmPublishTimer(m_publishTimer.Get(), target - now);