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[dxvk] Improve low-latency frame pacing for cpu-limited frames

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netborg 2025-02-22 18:21:02 +01:00
parent b59a1b9083
commit 0f3cbd6f66
1 changed files with 11 additions and 1 deletions
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12
src/dxvk/framepacer/dxvk_framepacer_mode_low_latency.h
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@ -87,7 +87,13 @@ namespace dxvk {
m->start + microseconds(m->gpuStart+getGpuStartToFinishPrediction()) - now).count();
int32_t targetGpuSync = gpuReadyPrediction + props.gpuSync;
int32_t delay = targetGpuSync - props.cpuUntilGpuSync + m_lowLatencyOffset;
int32_t gpuDelay = targetGpuSync - props.cpuUntilGpuSync;
int32_t cpuReadyPrediction = duration_cast<microseconds>(
m->start + microseconds(props.csFinished) - now).count();
int32_t cpuDelay = cpuReadyPrediction - props.csStart;
int32_t delay = std::max(gpuDelay, cpuDelay) + m_lowLatencyOffset;
m_lastStart = sleepFor( now, delay );
@ -143,6 +149,8 @@ namespace dxvk {
props.gpuSync = gpuRun[numLoop-1];
props.cpuUntilGpuSync = offset + duration_cast<microseconds>( m->gpuSubmit[numLoop-1] - m->start ).count();
props.optimizedGpuTime = optimizedGpuTime;
props.csStart = m->csStart;
props.csFinished = m->csFinished;
props.isOutlier = isOutlier(frameId);
m_propsFinished.store( frameId );
@ -171,6 +179,8 @@ namespace dxvk {
int32_t optimizedGpuTime; // gpu executing packed submits in one go
int32_t gpuSync; // us after gpuStart
int32_t cpuUntilGpuSync;
int32_t csStart;
int32_t csFinished;
bool isOutlier;
};