createGlContext

Creates a new GdkGLContext for the GdkDisplay.

The context is disconnected from any particular surface or surface and cannot be used to draw to any surface. It can only be used to draw to non-surface framebuffers like textures.

If the creation of the GdkGLContext failed, @error will be set. Before using the returned GdkGLContext, you will need to call method@Gdk.GLContext.make_current or method@Gdk.GLContext.realize.