How do I enable multisampling when I create the window? How should I initialize OpenGL to match?
Took me a while to figure this one out.
The trick is to use a QSurfaceFormat
in your QWindow
's constructor like so:
setSurfaceType(QWindow::OpenGLSurface);
QSurfaceFormat format;
format.setSamples(4); // Set the number of samples used for multisampling
setFormat(format); // Note we set the format on the window...
create(); // Create the window
context = new QOpenGLContext(this);
context->setFormat(format); // ...and set the format on the context too
context->create();
And later, when initialising OpenGL:
glEnable(GL_MULTISAMPLE); // This seems to be the default given the configuration above, but just in case that's not universal...
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