windows: Introduce a built-in GPU blacklist

Use a built-in JSON file in case the QT_OPENGL_BUGLIST environment
variable is not set. When QT_OPENGL_BUGLIST is set, the built-in list
is ignored.

To make the implementation simpler and more readable, some of the code
in QWindowsOpenGLTester is reshuffled a bit. It also caches the results
now, so it is safe and fast to call supportedRenderers() and friends
multiple times.

The blacklist currently contains the Intel card from QTBUG-43263 (Intel
GMA / HD3000 ?) and may also apply to QTBUG-42240.

[ChangeLog][QtGui] Qt now contains a built-in GPU driver blacklist for
Windows that disables the usage of desktop OpenGL with some older cards
that are known to be unstable with opengl32.dll.

Task-number: QTBUG-42240
Task-number: QTBUG-43263
Change-Id: I1ecd65b51fca77925317d52048e7ab01d9b8797c
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@theqtcompany.com>

1 files changed, 5 insertions, 3 deletions

diff --git a/src/plugins/platforms/windows/qwindowsintegration.cpp b/src/plugins/platforms/windows/qwindowsintegration.cpp
index 9fd18a1ef4..1041ecf44d 100644
--- a/src/plugins/platforms/windows/qwindowsintegration.cpp
+++ b/src/plugins/platforms/windows/qwindowsintegration.cpp
@@ -79,9 +79,7 @@
 #  include "qwindowsglcontext.h"
 #endif
 
-#ifndef Q_OS_WINCE
-#  include "qwindowsopengltester.h"
-#endif
+#include "qwindowsopengltester.h"
 
 QT_BEGIN_NAMESPACE
 
@@ -209,6 +207,10 @@ QWindowsIntegrationPrivate::QWindowsIntegrationPrivate(const QStringList &paramL
     : m_options(0)
     , m_fontDatabase(0)
 {
+#ifndef Q_OS_WINCE
+    Q_INIT_RESOURCE(openglblacklists);
+#endif
+
     static bool dpiAwarenessSet = false;
     int tabletAbsoluteRange = -1;
     // Default to per-monitor awareness to avoid being scaled when monitors with different DPI