There should not be a significant performance change in VGL 2.2 alpha, and in fact some users have observed it to be faster than previous releases. We are no longer using TurboJPEG/IPP, but we are using libjpeg-turbo, which is a fully open source codec with approximately the same performance.
With 2.2 alpha, you can set VGL_LOGO=1 to verify that VirtualGL is indeed activated (if so, it will display a VGL logo in the lower right corner of the 3D rendering area.) On 4/11/10 4:27 PM, Flo wrote: > I built a small app over the week-end ... to realize that it does not > reproduce the issue. > Every Qt openGL code and mine is running, but the app I want. > > However, I find a previous version of our app that is working (only with > VirtualGL 2.2alpha, seg fault with any other previous versions). I know we > did some speed improvement regarding Qt pixmap issues so I will dig into > that and let the mailinglist know as soon as I found which one of our > "improvements" caused this prob. > > I will send a small app reproducing the issue as soon as I found which part > of the code creates it. > > Now, the version of our app that works with VirtualGL2.2alpha is very slow. > Checking the release notes I saw you are not using the TurboJpeg anymore. Is > there a known decrease in performance with this change ? (glxgears is not > slow at all ... only our app .... again !) > > Best regards and thanks for the quick replies. > > Flo. > > -----Original Message----- > From: DRC [mailto:[email protected]] > Sent: Friday, April 09, 2010 1:52 AM > To: VirtualGL Users > Subject: Re: [VirtualGL-Users] QT + VirtualGL = black viewport flickering - > no display > > I'm not sure it is the same issue. Alex's issue was specific to MITK, > and he was able to resolve it by upgrading to a new version. > > Does your app use VTK or Qt or both? Is it something that could be > reproduced with a simple test application that I could build and run here? > > On 4/8/10 10:24 PM, Flo wrote: >> Dear All, >> >> I have an issue that was previously reported on you mailinglist here and >> not answered: >> > _http://sourceforge.net/mailarchive/message.php?msg_id=cbb4c0f20802191246o28 > [email protected]_ >> >> Specifically, I have a Qt application that uses 2D and 3D rendering in >> viewports. Although fine as standalone, when used through VirtualGL, >> every viewport (2D or 3D) is black. The only moment when I can see the >> proper content is by creating a mouse event (movement, click and else), >> where it flickers and for a second I can see the proper content before >> it becomes black again. >> >> I tried many combination of VirtualGL options but it seems not to do any >> good. >> >> The VirtualGL server is a SLED 11, although using few Suse OSS 11.2 >> repo, 64-bits and NVidia video card. >> >> "from what have been said: It sounds like if the >> >> OpenGL buffer is not flushed properly. >> >> We are also aware of problems with some OpenGL drivers, beside the >> >> ones from Nvidia, where setting the VTK rendering mode to "immediate" >> >> may help." >> >> But it didn't go any further in the thread. >> >> Any help would be greatly appreciated. >> >> Flo. >> >> >> >> > ---------------------------------------------------------------------------- > -- >> Download Intel® Parallel Studio Eval >> Try the new software tools for yourself. Speed compiling, find bugs >> proactively, and fine-tune applications for parallel performance. >> See why Intel Parallel Studio got high marks during beta. >> http://p.sf.net/sfu/intel-sw-dev >> >> >> >> _______________________________________________ >> VirtualGL-Users mailing list >> [email protected] >> https://lists.sourceforge.net/lists/listinfo/virtualgl-users > > ---------------------------------------------------------------------------- > -- > Download Intel® Parallel Studio Eval > Try the new software tools for yourself. Speed compiling, find bugs > proactively, and fine-tune applications for parallel performance. > See why Intel Parallel Studio got high marks during beta. > http://p.sf.net/sfu/intel-sw-dev > _______________________________________________ > VirtualGL-Users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/virtualgl-users > > > ------------------------------------------------------------------------------ > Download Intel® Parallel Studio Eval > Try the new software tools for yourself. Speed compiling, find bugs > proactively, and fine-tune applications for parallel performance. > See why Intel Parallel Studio got high marks during beta. > http://p.sf.net/sfu/intel-sw-dev > _______________________________________________ > VirtualGL-Users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/virtualgl-users ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ VirtualGL-Users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/virtualgl-users
