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[idd] serialize framebuffer copies on one queue

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Replace the rotating D3D12 copy queues with two framebuffer-bound
recording slots on one physical COPY queue. Keep allocator, command
list, query range, callback state, and fence target independent per
slot.

Submit source waits, execution, and signaling on the shared timeline.
Track framebuffer ownership through completion and serialize LGMP
publication around the last successfully published frame.
This commit is contained in:
Geoffrey McRae
2026-08-03 18:08:36 +10:00
parent 843207c628
commit ff4ca7d786
12 changed files with 813 additions and 423 deletions
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7
idd/LGIdd/CIndirectDeviceContext.h
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@@ -103,8 +103,10 @@ private:
size_t m_alignSize = 0;
size_t m_frameMemoryOffset = 0;
size_t m_maxFrameSize = 0;
int m_frameIndex = 0;
std::atomic<LONG> m_publishedFrameIndex = -1;
std::atomic<bool> m_frameInFlight[LGMP_Q_FRAME_LEN] = {};
SRWLOCK m_framePublishLock = SRWLOCK_INIT;
bool m_frameResendPending = false;
uint32_t m_formatVer = 0;
uint32_t m_frameSerial = 0;
PLGMPMemory m_frameMemory[LGMP_Q_FRAME_LEN] = {};
@@ -217,6 +219,9 @@ public:
bool FrameBufferAvailable() const;
PreparedFrameBuffer PrepareFrameBuffer(unsigned pitch, const D12FrameFormat& srcFormat, const D12FrameFormat& dstFormat, const RECT * dirtyRects, unsigned nbDirtyRects);
bool PublishFrameBuffer(unsigned frameIndex);
void AbortFrameBuffer(unsigned frameIndex);
void FailFrameBuffer(unsigned frameIndex);
void CompleteFrameBuffer(unsigned frameIndex);
void SetFrameTiming(unsigned frameIndex, uint64_t captureTime,
uint64_t postProcessTime, uint64_t copyTime, uint64_t readyTime);
void WriteFrameBuffer(unsigned frameIndex, void* src, size_t offset, size_t len, bool setWritePos) const;