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[nvmflinger] prefer newest queued frames to reduce input latency

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xbzk 2026-03-15 07:26:16 -03:00
parent f0a4ac7359
commit 6cf9d3ce75
1 changed files with 12 additions and 0 deletions
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12
src/core/hle/service/nvnflinger/buffer_queue_consumer.cpp
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@ -45,6 +45,18 @@ Status BufferQueueConsumer::AcquireBuffer(BufferItem* out_buffer,
auto front(core->queue.begin());
// Bound queue latency (if no present deadline is requested) while preserving one-frame
// backpressure so game pacing does not run ahead.
if (expected_present.count() == 0 && core->queue.size() > 2) {
while (core->queue.size() > 2) {
const auto stale = core->queue.begin();
if (core->StillTracking(*stale)) slots[stale->slot].buffer_state = BufferState::Free;
core->queue.erase(stale);
}
core->SignalDequeueCondition();
front = core->queue.begin();
}
// If expected_present is specified, we may not want to return a buffer yet.
if (expected_present.count() != 0) {
constexpr auto MAX_REASONABLE_NSEC = 1000000000LL; // 1 second