I'm looking for standard/convenient solution for picking a set of vertices (see attach). Questions:
- is glFeedbackBuffer a way to go?
- if so how can I detect vertex indices and (more important) vertex visibility (e.g. it's overlapped by polygon(s)). Solutions based on culling/normals aren't perfect, for example no vertices could be selected on plane turned back. In other hand it looks too expensive to write a raytracer for this task.