From 453d5b0052bd17ed74d47570ffff403ffcd9ebb3 Mon Sep 17 00:00:00 2001
From: Nicolas James <nj3ahxac@gmail.com>
Date: Wed, 8 Apr 2026 12:55:29 +1000
Subject: Fix refactor latency regression for VK_NV_LowLatency2 by checking if
 work has already completed

---
 src/strategies/low_latency2/swapchain_monitor.hh | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

(limited to 'src/strategies/low_latency2/swapchain_monitor.hh')

diff --git a/src/strategies/low_latency2/swapchain_monitor.hh b/src/strategies/low_latency2/swapchain_monitor.hh
index 837f8e4..a5f8362 100644
--- a/src/strategies/low_latency2/swapchain_monitor.hh
+++ b/src/strategies/low_latency2/swapchain_monitor.hh
@@ -26,16 +26,13 @@ class SwapchainMonitor final {
         void signal(const DeviceContext& device) const;
     };
 
-    // An empty vector here represents our 'no work' state.
     std::vector<std::unique_ptr<FrameSpan>> pending_frame_spans{};
 
-    // A pairing of semaphore -> submissions.
-    // If the Submissions completes then signal the bundled semaphore.
-    struct SemaphoreSpans {
+    struct PendingSignal {
         WakeupSemaphore wakeup_semaphore{};
         std::vector<std::unique_ptr<FrameSpan>> frame_spans{};
     };
-    std::optional<SemaphoreSpans> semaphore_spans{};
+    std::deque<PendingSignal> pending_signals{};
 
   protected:
     const DeviceContext& device;
-- 
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