Some time ago, with OpenCPN
2.5, I started developing a plugin that draws an overlay. Now I rebuilt it with the latest source code for OpenCPN
3.0, and tested it with 3.0.0, and now 3.0.1.
It still works, but when running in OpenGL mode RenderOverlay
doesn't get called. If I read the OpenCPN source code correctly, then also in OpenGL-mode the 'old'-style rendering should work.
So before I go into more detail, is this assumption correct, or do I have to duplicate the rendering for OpenGL?