From 2d87d4204016946e0b1d03cb41830686c84acc7f Mon Sep 17 00:00:00 2001
From: Laszlo Agocs <laszlo.agocs@qt.io>
Date: Wed, 4 Oct 2023 21:45:32 +0200
Subject: [PATCH] rhi: Fix intro doc snippet with Vulkan

The QVulkanInstance must outlive the QRhi (if Vulkan is used).
Otherwise subtle problems may pop up upon application exit.

Change-Id: Ia7074c7f53633d51cf3bbdcc84e7f578214d9648
Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>
(cherry picked from commit 1d019de6b7090ea6c973f7e9fa780259a455ce98)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
---
 src/gui/doc/snippets/rhioffscreen/main.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/gui/doc/snippets/rhioffscreen/main.cpp b/src/gui/doc/snippets/rhioffscreen/main.cpp
index 217b07dcdad..1db1a8f59ab 100644
--- a/src/gui/doc/snippets/rhioffscreen/main.cpp
+++ b/src/gui/doc/snippets/rhioffscreen/main.cpp
@@ -11,6 +11,9 @@ int main(int argc, char **argv)
 {
     QGuiApplication app(argc, argv);
 
+#if QT_CONFIG(vulkan)
+    QVulkanInstance inst;
+#endif
     std::unique_ptr<QRhi> rhi;
 #if defined(Q_OS_WIN)
     QRhiD3D12InitParams params;
@@ -19,7 +22,6 @@ int main(int argc, char **argv)
     QRhiMetalInitParams params;
     rhi.reset(QRhi::create(QRhi::Metal, &params));
 #elif QT_CONFIG(vulkan)
-    QVulkanInstance inst;
     inst.setExtensions(QRhiVulkanInitParams::preferredInstanceExtensions());
     if (inst.create()) {
         QRhiVulkanInitParams params;