From 70abae4a3f0492e433a68dd368e139455e9f2d97 Mon Sep 17 00:00:00 2001
From: gliptic <gliptic@users.noreply.github.com>
Date: Thu, 30 Apr 2026 14:31:34 +0200
Subject: [PATCH] fix: 100% CPU use in App.run

durationTo is inverted, making it a busy loop.
---
 src/vxfw/App.zig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/vxfw/App.zig b/src/vxfw/App.zig
index 355ad24..0220c6b 100644
--- a/src/vxfw/App.zig
+++ b/src/vxfw/App.zig
@@ -112,7 +112,7 @@ pub fn run(self: *App, widget: vxfw.Widget, opts: Options) anyerror!void {
 
     while (true) {
         const now = std.Io.Timestamp.now(self.io, .real);
-        const duration = next_frame.durationTo(now);
+        const duration = now.durationTo(next_frame);
         if (duration.nanoseconds <= 0) {
             // Deadline exceeded. Schedule the next frame
             next_frame = now.addDuration(tick);
-- 
2.51.2