Nvidia's proprietary driver creates a real OpenGL compatibility profile without this option, meanwhile Intel (and probably AMD, I haven't tested it) require that QSurfaceFormat::FormatOption::DeprecatedFunctions is explicitly enabled.
Nvidia's proprietary driver creates a real OpenGL compatibility profile without this option, meanwhile Intel (and probably AMD, I haven't tested it) require that QSurfaceFormat::FormatOption::DeprecatedFunctions is explicitly enabled.