Re: [osg-users] Enabling instancing should automatically disable display lists
If it's messy to automate the behavior, I think even a warning visible at a 'warn' log level would suffice. I.e. pop the message on add/insert PrimitiveSet if the drawarray is instanced and display lists are enabled on the Geometry. If I can squirrel away some time soon, I'll go ahead and submit a fix. -Trystan -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=58442#58442 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Enabling instancing should automatically disable display lists
Hi all, I found that OSG has display lists enabled by default on Geometry objects and it remains enabled even if instancing is enabled. This made for a fairly long and non-intuitive debug session as I was trying to figure out why my geometry failed to be drawn. Ultimately, I just had to setUseDisplayList( false ). According to the OpenGL spec. The error INVALID_OPERATION is generated if DrawArraysInstanced or DrawElementsInstanced is called during display list compilation, which is what finally clued me in. Wouldn't it makes sense to automatically disable display lists in the case instancing is enabled? Otherwise what is happening is very much hidden under the framework and not in a good way. Cheers, Trystan -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=58413#58413 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Enabling instancing should automatically disable display lists
How would you propose this work? Instancing is a property of the PrimitiveSet, and display list usage is a property of the Geometry object. Would you modify Geometry::addPrimitiveSet() to look for use of instancing, and if detected, disable display lists? What if the instanced PrimitiveSets are subsequently deleted? Would you need some way to save the original setting of display lists so that it could be restored? -Paul On Mon, Mar 3, 2014 at 12:09 PM, Trystan Larey-Williams trys...@trystan.org wrote: Wouldn't it makes sense to automatically disable display lists in the case instancing is enabled? ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
