From 099bd045d07f1a63628589203f5e5342f2722498 Mon Sep 17 00:00:00 2001
From: Damien Elmes <git@ichi2.net>
Date: Sat, 28 Jul 2018 16:38:22 +1000
Subject: [PATCH] default to software rendering on Windows/Linux

---
 aqt/__init__.py | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/aqt/__init__.py b/aqt/__init__.py
index ed44c8d94..25ea0f15d 100644
--- a/aqt/__init__.py
+++ b/aqt/__init__.py
@@ -223,6 +223,8 @@ def parseArgs(argv):
     parser.add_option("-b", "--base", help="path to base folder")
     parser.add_option("-p", "--profile", help="profile name to load")
     parser.add_option("-l", "--lang", help="interface language (en, de, etc)")
+    if not isMac:
+        parser.add_option("--hwaccel", action="store_true", help="enable hardware acceleration")
     return parser.parse_args(argv[1:])
 
 def run():
@@ -253,6 +255,13 @@ def _run(argv=None, exec=True):
     opts.base = opts.base or ""
     opts.profile = opts.profile or ""
 
+    if not isMac and not opts.hwaccel:
+        print("Hardware acceleration disabled.")
+        if isWin:
+            os.environ["QT_OPENGL"] = "software"
+        else:
+            os.environ["QT_XCB_FORCE_SOFTWARE_OPENGL"] = "1"
+
     # work around pyqt loading wrong GL library
     if isLin:
         import ctypes