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[client/idd/obs] scheduler: isolate timing owner delivery

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This commit is contained in:
Geoffrey McRae
2026-08-05 14:58:21 +10:00
parent 0b9b805530
commit c7ed04412e
21 changed files with 1572 additions and 362 deletions
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43
idd/LGIdd/CSwapChainProcessor.cpp
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@@ -35,7 +35,7 @@ static const uint64_t PUBLISH_RETRY_NS = 1000000ULL;
static const DWORD CANDIDATE_WAIT_MS = 2;
static_assert(LGMP_Q_FRAME_LEN == 2,
"IDD damage repair assumes two alternating frame buffers");
"IDD candidate pipeline assumes two slots");
class CSRWExclusiveLock
{
@@ -223,8 +223,30 @@ void CSwapChainProcessor::PublisherThread()
for (;;)
{
const uint64_t now = CFrameScheduler::Nanotime();
uint64_t target;
CFrameScheduler::Schedule schedule;
bool periodic;
bool republish;
m_devContext->GetPublishTarget(
now, target, schedule, periodic, republish);
if (!HasReadyCandidate())
{
if (republish && m_devContext->HasPublishedFrame())
{
m_devContext->ProcessFrameQueue();
if (m_devContext->RepublishFrameBuffer(schedule))
continue;
ArmPublishTimer(m_publishTimer.Get(), PUBLISH_RETRY_NS);
if (WaitForMultipleObjects(
ARRAYSIZE(timerHandles), timerHandles, FALSE, INFINITE) ==
WAIT_OBJECT_0)
break;
continue;
}
if (m_publishTimer.Get())
CancelWaitableTimer(m_publishTimer.Get());
if (WaitForMultipleObjects(
@@ -234,12 +256,6 @@ void CSwapChainProcessor::PublisherThread()
continue;
}
const uint64_t now = CFrameScheduler::Nanotime();
uint64_t target;
uint32_t generation;
bool periodic;
m_devContext->GetPublishTarget(now, target, generation, periodic);
if (target > now)
{
ArmPublishTimer(m_publishTimer.Get(), target - now);
@@ -252,9 +268,9 @@ void CSwapChainProcessor::PublisherThread()
const uint64_t publishStart = CFrameScheduler::Nanotime();
m_devContext->ProcessFrameQueue();
if (!m_devContext->FrameBufferAvailable() ||
if (!m_devContext->FrameBufferAvailable(schedule) ||
!PublishNewestCandidate(
generation, periodic, publishStart))
schedule, periodic, publishStart))
{
ArmPublishTimer(m_publishTimer.Get(), PUBLISH_RETRY_NS);
if (WaitForMultipleObjects(
@@ -907,7 +923,8 @@ void CSwapChainProcessor::SignalCandidateState()
}
bool CSwapChainProcessor::PublishNewestCandidate(
uint32_t scheduleGeneration, bool periodic, uint64_t publishStart)
const CFrameScheduler::Schedule& schedule, bool periodic,
uint64_t publishStart)
{
int selectedCandidate = -1;
uint64_t newestSequence = 0;
@@ -1007,7 +1024,7 @@ bool CSwapChainProcessor::PublishNewestCandidate(
RECT copyDirtyRects[LG_MAX_DIRTY_RECTS * 2] = {};
unsigned nbCopyDirtyRects = 0;
bool fullCopy =
bool fullCopy = buffer.fullCopy ||
candidate.nbDirtyRects == 0 || nbPreviousDirtyRects == 0;
if (!fullCopy)
@@ -1060,7 +1077,7 @@ bool CSwapChainProcessor::PublishNewestCandidate(
// Reserve the LGMP message before submitting the copy. This makes post
// failure recoverable without racing a very fast GPU completion callback.
if (!m_devContext->PublishFrameBuffer(
buffer.frameIndex, scheduleGeneration))
buffer.frameIndex, schedule))
{
copySlot->Cancel();
m_devContext->AbortFrameBuffer(buffer.frameIndex);
@@ -1104,7 +1121,7 @@ bool CSwapChainProcessor::PublishNewestCandidate(
ReleaseSRWLockExclusive(&m_damageLock);
m_devContext->CommitFrameBuffer(
buffer.frameIndex, scheduleGeneration, periodic);
buffer.frameIndex, schedule, periodic);
unsigned superseded = 0;
AcquireSRWLockExclusive(&m_candidateLock);