Chris, you're right about the heterogeneous case. Current svn trunk HEAD of the osgWorks project has a couple tools that might help.
There is a struct osgwTools::Capabilities that your app can invoke while any context is current (as in a Camera pre-draw callback). It obtains the GL_RENDERER string plus other strings and GL implementation dependent constants. It has a dump(std::ostream&) method, which your app can invoke to display the queried values.
There is also a standalone application called osgwcaps, which simply creates a pbuffer context, makes it current, creates a Capabilities struct, and dumps the values to osg::ALWAYS.
Chris, I agree it would be nice to have this someplace instantly accessible. I might be able to add a static that would query these values at DLL load time.
I hope this helps. -Paul On 1/15/2013 8:17 AM, Chris Hanson wrote:
I've been in this situation before too, and it would be very handy to have the GL_RENDERER and other identifying strings stored in OSG for the user code to query. Since many people don't know you have to have the context valid, and others don't know where/when OS has a valid context bound, it would be useful. Potentially, this information could be per-window-specific, couldn't it? Multiple heterogenous display cards on one machine could return different results for different contexts. On Tue, Jan 15, 2013 at 4:32 AM, Alistair Baxter <[email protected] <mailto:[email protected]>> wrote: My solution thus far has been to call glGetString in the same function after my call to osg::GL2Extensions::Get, since the OpenGL context appears to be valid at that time - indeed the glGetString call is made internally by the GLExtensions stuff at that time.____ __ __ It just seems like the renderer string should be exposed by the extensions object and it’s not.____ __ __ *From:*[email protected] <mailto:[email protected]> [mailto:[email protected] <mailto:[email protected]>] *On Behalf Of *Gianluca Natale *Sent:* 15 January 2013 10:54 *To:* OpenSceneGraph Users *Subject:* [osg-users] R: GL_RENDERER string____ __ __ Out of OSG/Qt, I think you should:____ __1)__Create a very simple rendering context (associated to the window created by your application);____ __2)__Make that rendering context as the current one;____ __3)__Call glGetString(GL_RENDERER, …);____ __ __ Steps 1 and 2 are required, since all gl calls need a current rendering context to work with.____ About steps 1 and 2, you should look at how OSG create the rendering context.____ __ __ *Da:*[email protected] <mailto:[email protected]> [mailto:[email protected]] *Per conto di *Alistair Baxter *Inviato:* martedì 15 gennaio 2013 10:47 *A:* [email protected] <mailto:[email protected]> *Oggetto:* [osg-users] GL_RENDERER string____ __ __ I’m wanting to get the GL_RENDERER string out of my OpenSceneGraph / Qt application for debug purposes, and potentially for showing to users for technical support purposes.____ __ __ I can get the likes of GL and GLSL version from the osg::GL2Extensions object, and I can see the renderer string being queries in the source code, but I’m having difficulty figuring out how to get it out.____ _______________________________________________ osg-users mailing list [email protected] <mailto:[email protected]> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- Chris 'Xenon' Hanson, omo sanza lettere. [email protected] http://www.alphapixel.com/ Training • Consulting • Contracting 3D • Scene Graphs (Open Scene Graph/OSG) • OpenGL 2 • OpenGL 3 • OpenGL 4 • GLSL • OpenGL ES 1 • OpenGL ES 2 • OpenCL Digital Imaging • GIS • GPS • osgEarth • Terrain • Telemetry • Cryptography • Digital Audio • LIDAR • Kinect • Embedded • Mobile • iPhone/iPad/iOS • Android @alphapixel <https://twitter.com/alphapixel> facebook.com/alphapixel <http://facebook.com/alphapixel> (775) 623-PIXL [7495] _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
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