The way it works with VirtualBox is that you actually run the VM software in VirtualGL rather than running VirtualGL in the VM. VBox already has its own mechanism for marshalling OpenGL calls from the guest to the host, so the host application works just like any other GLX app as far as VirtualGL is concerned.
KVM and Xen are a fundamentally different type of solution, though. They aren't self-contained and thus couldn't be run as applications in VirtualGL. And when you try to run VirtualGL inside of the VM, it's going to fail unless the VM is virtualizing the GPU somehow. If the VM can virtualize the GPU, then you really don't need VirtualGL, because 3D rendering should "just work". If the VM can virtualize the OpenGL stack, as VirtualBox is doing, then you would need to run the VM software in VirtualGL as we're doing with VBox. Note that it might be possible to open a display connection to :0.0 on the host and use VirtualGL inside the VM but set VGL_DISPLAY to point to the host display. We don't generally support this configuration because of security issues (you would have to open up TCP connections on the 3D-accelerated display, which is never a good idea in a production environment), but for a proof of concept, it might be OK -- assuming it works. On 3/8/13 4:41 PM, James Wettenhall wrote: > DRC, > >> Why can't you use VirtualGL? The Chimera page clearly says that they >> recommend "vendor-supplied graphics drivers", which VirtualGL would >> enable you to use. > > A litte more information. > > Our CentOS 6 VMs have the xorg-x11-drv-qxl driver installed. > > I just upgraded to the latest version: > https://rhn.redhat.com/errata/RHSA-2013-0218.html > > But trying to run glxgears with VirtualGL gives: > > Error: couldn't get an RGB, Double-buffered visual > > It may be that something needs to be tweaked at the hypervisor level: > > http://www.linux-kvm.org/page/SPICE > > I'll contact our KVM admins. ------------------------------------------------------------------------------ Symantec Endpoint Protection 12 positioned as A LEADER in The Forrester Wave(TM): Endpoint Security, Q1 2013 and "remains a good choice" in the endpoint security space. For insight on selecting the right partner to tackle endpoint security challenges, access the full report. http://p.sf.net/sfu/symantec-dev2dev _______________________________________________ VirtualGL-Users mailing list VirtualGL-Users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/virtualgl-users
