From d28463b8e765b96004c71837d2a807c1a8139a13 Mon Sep 17 00:00:00 2001
From: Guillaume Bottesi <bottesi@adobe.com>
Date: Tue, 13 May 2025 09:31:50 +0200
Subject: [PATCH] Prevent freeze in QSGRenderThread when pressing Win-D

---
 .../src/quick/scenegraph/qsgthreadedrenderloop.cpp        | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/qtdeclarative/src/quick/scenegraph/qsgthreadedrenderloop.cpp b/qtdeclarative/src/quick/scenegraph/qsgthreadedrenderloop.cpp
index 4fcaddf22c..9332704f58 100644
--- a/qtdeclarative/src/quick/scenegraph/qsgthreadedrenderloop.cpp
+++ b/qtdeclarative/src/quick/scenegraph/qsgthreadedrenderloop.cpp
@@ -632,8 +632,14 @@ void QSGRenderThread::syncAndRender()
         // An update request could still be delivered right before we get an
         // unexpose. With Vulkan on Windows for example attempting to render
         // leads to failures at this stage since the surface size is already 0.
-        if (effectiveOutputSize.isEmpty())
+        if (effectiveOutputSize.isEmpty()) {
+            if (syncRequested) {
+                mutex.lock();
+                waitCondition.wakeOne();
+                mutex.unlock();
+            }
             return;
+        }
 
         const QSize previousOutputSize = cd->swapchain->currentPixelSize();
         if (previousOutputSize != effectiveOutputSize || cd->swapchainJustBecameRenderable) {
-- 
2.48.1.windows.1