From 8617ec7250a516764e348adfd3bff12f37e7b008 Mon Sep 17 00:00:00 2001
From: Mike Hordecki <mike@hordecki.com>
Date: Fri, 16 Aug 2019 22:35:39 +0200
Subject: [PATCH] Add support for OpenGL software rendering.

In some systems, the default Qt hardware renderer is buggy. There's a Qt
option for forcing software rendering. This commit adds support for a
new environment variable, ANKI_SOFTWAREOPENGL, that, when set, will
prompt Anki to force software OpenGL in Qt.
---
 aqt/__init__.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/aqt/__init__.py b/aqt/__init__.py
index 1645209b1..1d6df5930 100644
--- a/aqt/__init__.py
+++ b/aqt/__init__.py
@@ -309,6 +309,10 @@ def _run(argv=None, exec=True):
     if not os.environ.get("ANKI_NOHIGHDPI"):
         QCoreApplication.setAttribute(Qt.AA_EnableHighDpiScaling)
 
+    # Opt into software rendering. Useful for buggy systems.
+    if os.environ.get("ANKI_SOFTWAREOPENGL"):
+        QCoreApplication.setAttribute(Qt.AA_UseSoftwareOpenGL)
+
     # create the app
     QCoreApplication.setApplicationName("Anki")
     QGuiApplication.setDesktopFileName("anki.desktop")