From a1f8c19355f7e0e673511c24feeae60d47f19c1c Mon Sep 17 00:00:00 2001
From: "Ngo Iok Ui (Wu Yu Wei)" <yuweiwu@pm.me>
Date: Mon, 29 Apr 2024 17:01:31 +0900
Subject: [PATCH] Fix flip_rect calculation (#32174)

---
 components/compositing/windowing.rs | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/components/compositing/windowing.rs b/components/compositing/windowing.rs
index 7d98f610bec..fc7ef379be1 100644
--- a/components/compositing/windowing.rs
+++ b/components/compositing/windowing.rs
@@ -249,7 +249,10 @@ impl EmbedderCoordinates {
     /// This should be used when drawing directly to the framebuffer with OpenGL commands.
     pub fn flip_rect(&self, rect: &DeviceIntRect) -> DeviceIntRect {
         let mut result = *rect;
-        result.min.y = self.framebuffer.height - result.min.y - result.size().height;
+        let min_y = self.framebuffer.height - result.max.y;
+        let max_y = self.framebuffer.height - result.min.y;
+        result.min.y = min_y;
+        result.max.y = max_y;
         result
     }