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[idd] capture: retire published pending damage

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Track damage received after each retained candidate snapshot. When a
candidate is submitted successfully, replace the global pending set
with its trailing damage instead of requiring the source generation
to remain unchanged.

This lets published full-frame damage retire while preserving newer
partial or full updates.
This commit is contained in:
Geoffrey McRae
2026-08-05 20:57:32 +10:00
parent ff5b43173a
commit f073099950
2 changed files with 86 additions and 53 deletions
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23
idd/LGIdd/CSwapChainProcessor.h
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@@ -75,7 +75,6 @@ private:
unsigned pitch = 0;
size_t frameSize = 0;
uint64_t sequence = 0;
uint64_t damageGeneration = 0;
uint64_t captureTime = 0;
uint64_t postProcessStart = 0;
uint64_t prepareCopyStart = 0;
@@ -87,12 +86,22 @@ private:
bool prepareTimingValid = false;
};
FrameCandidate m_candidates[LGMP_Q_FRAME_LEN];
SRWLOCK m_candidateLock = SRWLOCK_INIT;
SRWLOCK m_damageLock = SRWLOCK_INIT;
SRWLOCK m_pipelineLock = SRWLOCK_INIT;
uint64_t m_candidateSequence = 0;
uint64_t m_damageGeneration = 0;
struct CandidateDamageTail
{
uint64_t ownerSequence = 0;
RECT dirtyRects[LG_MAX_DIRTY_RECTS] = {};
unsigned nbDirtyRects = 0;
bool hasDamage = false;
bool active = false;
};
// An active tail records only damage received after its candidate snapshot.
FrameCandidate m_candidates[LGMP_Q_FRAME_LEN];
CandidateDamageTail m_candidateDamageTail[LGMP_Q_FRAME_LEN];
SRWLOCK m_candidateLock = SRWLOCK_INIT;
SRWLOCK m_damageLock = SRWLOCK_INIT;
SRWLOCK m_pipelineLock = SRWLOCK_INIT;
uint64_t m_candidateSequence = 0;
Wrappers::HandleT<Wrappers::HandleTraits::HANDLENullTraits> m_thread[3];
Wrappers::Event m_terminateEvent;