Printable View
I am new to X-Windows/Linux programming, so this is probably a dumb question, but...
I am working on an application that only needs a valid GL context. I don't actually need visible rendering window. The example apps I have seen call XOpenDisplay to connect to the X-Server. Is this necessary to get a GL context?
CD
From the function reference, it seems that glXCreateContext does require a Display object, so you will have to call XOpenDisplay to get a display.
~P
Once I have a valid context, can I call XCloseDisplay and kill the server?
CD
Quote:
Originally Posted by Sykotik
I would say no. With GLX, the OpenGL commands/data are part of the X Window Specification proper (as an extension), so you actually do need the display to operate on your back-buffer. You'll probably only be able to close the connection to the X server once you're done with whatever you need to do with the OpenGL context.Quote:
Originally Posted by CelticDaddio
Reason for this is the whole network transparency shebang of X, I think: execute the application on the server, have it display (or in your case, render in the off-screen pixmap) on the client -- that kind of thing.
Of course, I'm just speaking off the top of my head and from prior experience with X and/or OpenGL, so I'm open to being corrected. :)