Disable Desktop Open GL but keep ANGLE + Software OpenGL fallbacks.

[dagheyman]

Hi,

So I've read this document, which explains a lot of things, but I still have one question. How can I disable loading Desktop OpenGL (because our users are having a lot of problems with it), but still trying ANGLE and Software OpenGL dynamically?

Right now I have

app.setAttribute(Qt::AA_UseOpenGLES);

set to force the use of ANGLE, but it fails on some virtual machines where the software rendering seems to work.