At Wed, 27 Jun 2012 23:14:21 +0200, Petr Samarin wrote: > I was trying out some examples from the documentation and used openGL code > outside of openGL context!
That makes sense. I vaguely recall that Apple's GL is likely to crash without a context, while other GL implementations tend not to crash in that case. I'm not sure of the right way to add a check for a context. The context is determined outside of the GL API, and the `sgl' library inherits the assumption that a context will be set somehow --- possibly via `racket/gui', but possibly through some other library. One possibility is to introduce a third library that GL libraries like `sgl' and context-supplying libraries like `racket/gui' could use to communicate o the availability of a context. If `sgl' insists that a context is available according to the next library, then there's an issue of backward compatibility (in case someone uses `sgl' with contexts other than from `racket/gui'). Also, I think a check implemented that way might significantly affect performance. Any other ideas? ____________________ Racket Users list: http://lists.racket-lang.org/users
