2nd Pass Render

src/core/capture/tail_control.h

@@ -21,14 +21,19 @@ inline constexpr double kManualStepMs = 250.0;
 // The panel's current tail setting: mode + the length used only when Manual.
 // Default None so a capture with no explicit choice stays exact-bounds.
 // `manualMs` is clamped to kMaxTailMs before it ever reaches a CaptureRequest.
+// 2nd-Pass Render optional, off by default
 struct TailSetting {
-    TailMode mode     = TailMode::None;
-    double   manualMs = kDefaultManualTailMs;
+    TailMode mode       = TailMode::None;
+    double   manualMs   = kDefaultManualTailMs;
+    bool     secondPass = false;
 };
 
 // Cycles the tail mode: None -> Auto -> Manual -> None.
 TailMode cycleTailMode(TailMode current);
 
+// Toggles the 2nd-Pass Render
+bool toggleSecondPass(bool current);
+
 // The effective manual length a Manual capture uses: clamped to [0, kMaxTailMs].
 // Exposed so the panel can show the clamped value. Meaningful only for Manual.
 double clampManualMs(double manualMs);