From 51f5dcb67881a80956207631c45a8c71de4c3420 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Wed, 16 Mar 2022 06:57:30 +0530
Subject: [PATCH] Allow usage of webengine in main calibre process

---
 src/calibre/gui2/__init__.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/calibre/gui2/__init__.py b/src/calibre/gui2/__init__.py
index b96afb5f1b..6975d626cd 100644
--- a/src/calibre/gui2/__init__.py
+++ b/src/calibre/gui2/__init__.py
@@ -926,6 +926,9 @@ class Application(QApplication):
     def __init__(self, args, force_calibre_style=False, override_program_name=None, headless=False, color_prefs=gprefs, windows_app_uid=None):
         self.ignore_palette_changes = False
         QNetworkProxyFactory.setUseSystemConfiguration(True)
+        # Allow import of webengine after construction of QApplication on new
+        # enough PyQt
+        QApplication.setAttribute(Qt.ApplicationAttribute.AA_ShareOpenGLContexts)
         if iswindows:
             self.windows_app_uid = None
             if windows_app_uid: