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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superseded candidates, include the scheduling hold in end-to-end timing,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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19
idd/LGIdd/CIndirectDeviceContext.h
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@@ -86,9 +86,10 @@ private:
CIVSHMEM m_ivshmem;
PLGMPHost m_lgmp = nullptr;
WDFTIMER m_lgmpTimer = nullptr;
PLGMPHostQueue m_frameQueue = nullptr;
PLGMPHost m_lgmp = nullptr;
WDFTIMER m_lgmpTimer = nullptr;
PLGMPHostQueue m_frameQueue = nullptr;
SRWLOCK m_lgmpProcessLock = SRWLOCK_INIT;
CFrameScheduler m_frameScheduler;
@@ -224,8 +225,11 @@ public:
};
bool FrameBufferAvailable() const;
void ProcessFrameQueue();
PreparedFrameBuffer PrepareFrameBuffer(unsigned pitch, const D12FrameFormat& srcFormat, const D12FrameFormat& dstFormat, const RECT * dirtyRects, unsigned nbDirtyRects);
bool PublishFrameBuffer(unsigned frameIndex, uint32_t scheduleGeneration);
void CommitFrameBuffer(unsigned frameIndex, uint32_t scheduleGeneration,
bool periodic);
void AbortFrameBuffer(unsigned frameIndex);
void FailFrameBuffer(unsigned frameIndex);
void CompleteFrameBuffer(unsigned frameIndex);
@@ -235,7 +239,14 @@ public:
void FinalizeFrameBuffer(unsigned frameIndex) const;
void ObserveFrame(uint64_t now);
bool SelectFrame(uint64_t now, bool force, uint32_t& generation);
void ForceFrame();
bool GetPublishTarget(uint64_t now, uint64_t& target,
uint32_t& generation, bool& periodic);
void FrameSuperseded();
HANDLE GetFrameScheduleEvent() const
{
return m_frameScheduler.GetWakeEvent();
}
void RecordFrameTiming(uint64_t duration);
void SendCursor(const IDARG_OUT_QUERY_HWCURSOR & info, const BYTE * data,