diff --git a/src/platform/qt/DisplayGL.cpp b/src/platform/qt/DisplayGL.cpp
index d949eb016..3736e34e0 100644
--- a/src/platform/qt/DisplayGL.cpp
+++ b/src/platform/qt/DisplayGL.cpp
@@ -11,6 +11,7 @@
 #include <QMutexLocker>
 #include <QOffscreenSurface>
 #include <QOpenGLContext>
+#include <QOpenGLFunctions>
 #include <QOpenGLPaintDevice>
 #include <QResizeEvent>
 #include <QScreen>
@@ -125,7 +126,22 @@ bool DisplayGL::supportsFormat(const QSurfaceFormat& format) {
 		           context.format().profile() == QSurfaceFormat::CompatibilityProfile ||
 		           context.format().testOption(QSurfaceFormat::DeprecatedFunctions))) {
 			// Supports the old stuff
-			s_supports[format] = true;
+			QOffscreenSurface surface;
+			surface.create();
+			if (!context.makeCurrent(&surface)) {
+				s_supports[format] = false;
+				return false;
+			}
+#ifdef Q_OS_WIN
+			QLatin1String renderer(reinterpret_cast<const char*>(context.functions()->glGetString(GL_RENDERER)));
+			if (renderer == "GDI Generic") {
+				// Windows' software OpenGL 1.1 implementation is not sufficient
+				s_supports[format] = false;
+				return false;
+			}
+#endif
+			s_supports[format] = context,hasExtension("GL_EXT_blend_color"); // Core as of 1.2
+			context.doneCurrent();
 		} else if (!context.isOpenGLES() && format.version() >= qMakePair(2, 1) && foundVersion < qMakePair(3, 0) && foundVersion >= qMakePair(2, 1)) {
 			// Weird edge case we support if ARB_framebuffer_object is present
 			QOffscreenSurface surface;