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[client/host/idd] correct frame timing attribution

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Use calibrated copy-queue timestamps to separate source and effect
waits from the actual framebuffer copy.

Exclude producer readiness waits from client import timing so the
same interval is not counted in both Copy and Import.
This commit is contained in:
Geoffrey McRae
2026-08-03 15:58:41 +10:00
parent c8e4b97c3c
commit aa289fa022
17 changed files with 630 additions and 92 deletions
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29
idd/LGIdd/CD3D12CommandQueue.h
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@@ -25,6 +25,7 @@
#include <wrl.h>
#include <d3d12.h>
#include <atomic>
#include <stdint.h>
using namespace Microsoft::WRL;
using namespace Microsoft::WRL::Wrappers;
@@ -41,11 +42,21 @@ class CD3D12CommandQueue
ComPtr<ID3D12CommandList > m_cmdList;
ComPtr<ID3D12Fence > m_fence;
std::atomic<bool> m_pending = false;
ComPtr<ID3D12QueryHeap> m_timestampHeap;
ComPtr<ID3D12Resource > m_timestampReadback;
UINT64 * m_timestampMap = nullptr;
UINT64 m_timestampFrequency = 0;
UINT64 m_calibrationGPU = 0;
UINT64 m_calibrationCPU = 0;
UINT64 m_qpcFrequency = 0;
bool m_timingSupported = false;
bool m_timingActive = false;
std::atomic<bool> m_pending = false;
HandleT<HANDLENullTraits> m_event;
HANDLE m_waitHandle = INVALID_HANDLE_VALUE;
UINT64 m_fenceValue = 0;
bool m_needsReset = false;
HANDLE m_waitHandle = INVALID_HANDLE_VALUE;
UINT64 m_fenceValue = 0;
bool m_needsReset = false;
typedef void (*CompletionFunction)(CD3D12CommandQueue * queue,
bool result, void * param1, void * param2);
@@ -54,6 +65,9 @@ class CD3D12CommandQueue
void * m_completionParams[2];
bool m_completionResult = true;
bool InitTiming(ID3D12Device3 * device, D3D12_COMMAND_LIST_TYPE type);
void UpdateClockCalibration();
void OnCompletion()
{
if (m_completionCallback)
@@ -62,6 +76,7 @@ class CD3D12CommandQueue
m_completionResult,
m_completionParams[0],
m_completionParams[1]);
UpdateClockCalibration();
m_pending = false;
}
@@ -90,6 +105,12 @@ class CD3D12CommandQueue
bool Reset();
bool Execute();
bool BeginTiming();
void EndTiming();
// Return the command-list start in QueryPerformanceCounter-domain ns.
bool GetGPUStartTime(uint64_t& start);
//void Wait();
bool IsReady () const { return !m_pending ; }
HANDLE GetEvent() const { return m_event.Get(); }