On 11-12-22 11:54 AM, DRC wrote: > On 12/22/11 9:56 AM, Nathan Kidd wrote: >> On 11-12-22 09:36 AM, Stefan Eilemann wrote: >>> I need to detect within a C++ program whether or not I'm running under >>> VirtualGL, to enable certain optimizations. What is the recommended way to >>> do this? >> >> When VGL is running it overrides the GLX vendor strings with >> "VirtualGL". Try glXGetClientString() with GLX_VENDOR. >> http://www.opengl.org/sdk/docs/man/xhtml/glXGetClientString.xml > > Forget what I said about VGL_AUTOTEST. This is a much better approach, > in general, although I think that, in the OP's case, he wanted to know > about VGL's presence before the display connection was created.
If one really needs to know before "the" connection is made, it shouldn't be a difficulty to just: tmpdpy=XOpenDisplay(); glXGetClientString(tmpdpy); XCloseDisplay(tmpdpy); Trivia: I don't know why one would do this, but the way VGL hooks glXGetClientString, and _isremote is implemented, you technically could get away with passing in a bogus DPY, (though the API docs don't explicitly say that Xlib won't fall back to its error handler instead of just returning a NULL return value, in this case.) -Nathan ------------------------------------------------------------------------------ Write once. Port to many. Get the SDK and tools to simplify cross-platform app development. Create new or port existing apps to sell to consumers worldwide. Explore the Intel AppUpSM program developer opportunity. appdeveloper.intel.com/join http://p.sf.net/sfu/intel-appdev _______________________________________________ VirtualGL-Devel mailing list VirtualGL-Devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/virtualgl-devel
