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[idd] scheduler: retain frames for publication deadlines

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Prepare each acquired content frame into one of two private GPU
candidates so the IddCx frame can be released without copying it to
IVSHMEM immediately.

Wake a high-resolution publisher at the client deadline and send the
newest completed candidate. Preserve accumulated damage across
superseded candidates, include the scheduling hold in end-to-end timing,
and keep transport work on the existing physical copy queue.
This commit is contained in:
Geoffrey McRae
2026-08-05 12:38:07 +10:00
parent afb80e0ae4
commit 0b9b805530
7 changed files with 953 additions and 276 deletions
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51
idd/LGIdd/CIndirectDeviceContext.cpp
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@@ -1246,7 +1246,10 @@ void CIndirectDeviceContext::LGMPTimer()
}
LGMP_STATUS status;
if ((status = lgmpHostProcess(m_lgmp)) != LGMP_OK)
AcquireSRWLockExclusive(&m_lgmpProcessLock);
status = lgmpHostProcess(m_lgmp);
ReleaseSRWLockExclusive(&m_lgmpProcessLock);
if (status != LGMP_OK)
{
if (status == LGMP_ERR_CORRUPTED)
{
@@ -1348,6 +1351,19 @@ bool CIndirectDeviceContext::FrameBufferAvailable() const
return !m_frameInFlight[frameIndex].load(std::memory_order_acquire);
}
void CIndirectDeviceContext::ProcessFrameQueue()
{
if (!m_lgmp)
return;
AcquireSRWLockExclusive(&m_lgmpProcessLock);
const LGMP_STATUS status = lgmpHostProcess(m_lgmp);
ReleaseSRWLockExclusive(&m_lgmpProcessLock);
if (status != LGMP_OK && status != LGMP_ERR_CORRUPTED)
DEBUG_ERROR("lgmpHostProcess Failed: %s", lgmpStatusString(status));
}
CIndirectDeviceContext::PreparedFrameBuffer CIndirectDeviceContext::PrepareFrameBuffer(
unsigned pitch, const D12FrameFormat& srcFormat, const D12FrameFormat& dstFormat,
const RECT * dirtyRects, unsigned nbDirtyRects)
@@ -1524,11 +1540,6 @@ bool CIndirectDeviceContext::PublishFrameBuffer(unsigned frameIndex,
}
ReleaseSRWLockExclusive(&m_framePublishLock);
if (status == LGMP_OK)
m_frameScheduler.FramePublished(
scheduleGeneration, m_frame[frameIndex]->frameSerial,
CFrameScheduler::Nanotime());
if (status != LGMP_OK)
{
DEBUG_ERROR("Failed to publish frame: %s", lgmpStatusString(status));
@@ -1538,15 +1549,37 @@ bool CIndirectDeviceContext::PublishFrameBuffer(unsigned frameIndex,
return true;
}
void CIndirectDeviceContext::CommitFrameBuffer(unsigned frameIndex,
uint32_t scheduleGeneration, bool periodic)
{
if (frameIndex >= LGMP_Q_FRAME_LEN)
return;
m_frameScheduler.FramePublished(
scheduleGeneration, m_frame[frameIndex]->frameSerial,
CFrameScheduler::Nanotime(), periodic);
}
void CIndirectDeviceContext::ObserveFrame(uint64_t now)
{
m_frameScheduler.ObserveFrame(now);
}
bool CIndirectDeviceContext::SelectFrame(uint64_t now, bool force,
uint32_t& generation)
void CIndirectDeviceContext::ForceFrame()
{
return m_frameScheduler.SelectFrame(now, force, generation);
m_frameScheduler.ForceFrame();
}
bool CIndirectDeviceContext::GetPublishTarget(uint64_t now,
uint64_t& target, uint32_t& generation, bool& periodic)
{
return m_frameScheduler.GetPublishTarget(
now, target, generation, periodic);
}
void CIndirectDeviceContext::FrameSuperseded()
{
m_frameScheduler.FrameSuperseded();
}
void CIndirectDeviceContext::RecordFrameTiming(uint64_t duration)