Enhance Profiler with pre-allocated sort buffers and frame management improvements

Nerfed.Runtime/ProfilerVisualizer.cs

@@ -283,15 +283,22 @@ public static class ProfilerVisualizer
             return;
         }
 
-        bool isZoom = io.KeyCtrl;
-        if (isZoom)
+        if (!io.KeyCtrl && !io.KeyShift)
+        {
+            return; // plain scroll goes to ImGui vertical scrolling
+        }
+
+        float wheel = io.MouseWheel;
+        io.MouseWheel = 0; // consume so the child window doesn't also scroll vertically
+
+        if (io.KeyCtrl)
         {
             float previousZoom = state.Zoom;
             double visibleStartTicksBefore = timelineStartTicks + state.PanTicks;
             double mouseT = Math.Clamp((ImGui.GetMousePos().X - originX) / Math.Max(1f, canvasWidth), 0f, 1f);
             double pivotTick = visibleStartTicksBefore + (visibleDurationTicks * mouseT);
 
-            state.Zoom = Math.Clamp(state.Zoom * MathF.Pow(1.12f, io.MouseWheel), 1f, 128f);
+            state.Zoom = Math.Clamp(state.Zoom * MathF.Pow(1.12f, wheel), 1f, 128f);
             if (Math.Abs(previousZoom - state.Zoom) > float.Epsilon)
             {
                 double newVisibleDurationTicks = Math.Max(1d, timelineDurationTicks / state.Zoom);
@@ -303,7 +310,8 @@ public static class ProfilerVisualizer
         }
         else
         {
-            state.PanTicks -= io.MouseWheel * (visibleDurationTicks * 0.10d);
+            // Shift + scroll: horizontal pan
+            state.PanTicks -= wheel * (visibleDurationTicks * 0.10d);
             state.FollowLatest = false;
             userNavigated = true;
         }