On 12/22/11 2:10 PM, Nathan Kidd wrote: > On 11-12-13 07:12 AM, DRC wrote: >> I'm going to go ahead and release 2.3, since it's overdue and we're >> reasonably confident that the VGL_DEFAULTFBCONFIG feature will fix Abaqus. > > I just heard back today about testing with GLX_STENCIL_SIZE,8. The > patch is it is working fine, but bad news is, they can't reproduce the > problem any more. > > I have seen at a remote GLX trace where Abaqus does explicitly choose > and use a stencil buffer. Previously a beta VGL that simply forced > stencil on all the time did solve the problem. Knowing German > thoroughness I believe the best explanation is not user confusion but > that something is tickling Abaqus so sometimes it tries to use stencil > and sometimes not. Thus, I think the app recipe is still useful, but > should be qualified by "may require". > > The Abaqus Scripting Reference Manual (found by Google) doesn't mention > any configuration setting for stencil (non)use. > > :(
Well, that is sort of what was happening with whatever other app it was that prompted this thread to begin with. It was only sometimes choosing a StaticGray FBConfig. There's also a reported issue with Avizo that I can't reproduce but which seems to be the same sort of issue, only with multisampling rather than the stencil buffer (that user hasn't yet replied back as to whether VGL_DEFAULTFBCONFIG fixes it.) Whereas multisampling isn't really something we can choose for the user, I don't see any downside to always enabling a stencil buffer with the default FB config and allowing the user to override that with VGL_DEFAULTFBCONFIG=GLX_STENCIL,0. The overriding goal in VirtualGL is to eliminate app recipes, so being able to eliminate the Abaqus one would be a plus, even if we're eliminating it in a less than elegant way. ------------------------------------------------------------------------------ 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
