Upon looking at this more closely, it actually wasn't the size of the pixmap that was the problem. It was the extent. Xorg apparently doesn't allow pixmaps with a width/height larger than 32767. I've tweaked the code accordingly.
On 12/9/11 6:37 AM, DRC wrote: > I believe the code in trunk should fix this. What was happening was the > app was using glXUseXFont() with a rather large font. In an attempt to > reduce round trips to the X server (because, when using the VGL > Transport, the X server is remotely located), VirtualGL tries to load > the entire font into a single pixmap/X image and build the OpenGL > bitmaps from this pixmap/image. I'm not entirely sure how beneficial > that behavior is, but since I went to the trouble of implementing it > years ago, I'm not going to argue with my former self. The issue is > that, when using large fonts, that pixmap can become quite large (5 > megapixels, in the case of the font Oasys Primer was trying to use.) > What I did was to break the font up into groups, such that no one group > will cause a pixmap of more than 1 megapixel to be created. > > NOTE: I wonder aloud whether it wouldn't be better to create an > invisible window on the 3D X server and use that for creating the > temporary pixmaps rather than putting them on the 2D X server. That > would eliminate the need to control round trips, and we could revert > back to the behavior of Mesa, which is to create a pixmap for every > glyph and then immediately destroy it. I'm inclined to do nothing as > long as the current behavior isn't a performance issue, but there is an > option to change it if it ever becomes one. > > > On 12/7/11 8:21 AM, filip.ged...@gridcore.se wrote: >> I tried some more cases, running the application on the local x server >> with VGL and running with TightVNC. >> >> All X servers except TurboVNC gives the same error when running the >> application with VGL. >> The application works using the X servers build in OGL implementation. >> Mesa in the case of the VNC servers and a NVIDIA device in Xorg. >> >> The versions used are: >> VGL 2.2.1 >> Tight 1.2.9 >> Tiger 1.1.0 >> Turbo 1.0.2 >> Xorg 6.9.0 >> >> Do you have any idea on what could could cause this? >> To me it looks like it's something with VGL. >> >> For you to be able to test it. Do you need a copy of the application or >> would it be possible for you to work remotely to one of our computers >> where we have a license? >> >> Best Regards >> -- >> Filip Gedell >> >> >> >> >> From: filip.ged...@gridcore.se >> To: VirtualGL Users <virtualgl-users@lists.sourceforge.net>, >> Date: 2011-12-07 13:10 >> Subject: Re: [VirtualGL-Users] Oasys Primer problem >> ------------------------------------------------------------------------ >> >> >> >> It works fine with TurboVNC. >> Thanks for the tip, I will try the TigerVNC list. >> >> -- >> Filip Gedell >> Software Engineer >> Gridcore AB >> Aschebergsgatan 46 >> 411 33 Göteborg >> Phone: +46 31 18 21 60 >> Cell: +46 733 18 21 62 >> >> >> >> From: DRC <dcomman...@users.sourceforge.net> >> To: virtualgl-users@lists.sourceforge.net, >> Date: 2011-12-07 11:08 >> Subject: Re: [VirtualGL-Users] Oasys Primer problem >> ------------------------------------------------------------------------ >> >> >> >> Does it happen with TurboVNC as well? If not, then please forward to >> tigervnc-users. If so, then is it possible to obtain a copy of the app >> for testing? >> >> >> On 12/7/11 2:09 AM, filip.ged...@gridcore.se wrote: >>> Hi, >>> >>> We are trying to run Oasys Primer using TigerVNC and VGL. >>> >>> The application starts and the process is reading event data from the X >>> socket. The problem is that the ui is not updating and not responding to >>> any user input. >>> >>> Enabling VGL_TRACE shows that a call to glXUseXFont seems to fail and >>> the application prints the error message: "Space allocation failure >>> (BadAlloc) when allocating Pixmap". >>> >>> This is followed by the following lines repeated about 200 times: >>> "X Server error detected: >>> BadDrawable (invalid Pixmap or Window parameter) >>> Protocol request: 55 >>> Resource ID: a00298 >>> Trying XSync" >>> >>> The failed call to glXUseXFont is the last entry in the VGL log file. >>> >>> Anyone that have experience with this application or have experienced >>> similar problems? >> >> ------------------------------------------------------------------------------ >> Cloud Services Checklist: Pricing and Packaging Optimization >> This white paper is intended to serve as a reference, checklist and >> point of >> discussion for anyone considering optimizing the pricing and packaging >> model >> of a cloud services business. 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Read Now! >> http://www.accelacomm.com/jaw/sfnl/114/51491232/_______________________________________________ >> VirtualGL-Users mailing list >> VirtualGL-Users@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/virtualgl-users >> >> >> >> ------------------------------------------------------------------------------ >> Cloud Services Checklist: Pricing and Packaging Optimization >> This white paper is intended to serve as a reference, checklist and point of >> discussion for anyone considering optimizing the pricing and packaging model >> of a cloud services business. Read Now! >> http://www.accelacomm.com/jaw/sfnl/114/51491232/ >> >> >> >> _______________________________________________ >> VirtualGL-Users mailing list >> VirtualGL-Users@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/virtualgl-users ------------------------------------------------------------------------------ Cloud Services Checklist: Pricing and Packaging Optimization This white paper is intended to serve as a reference, checklist and point of discussion for anyone considering optimizing the pricing and packaging model of a cloud services business. Read Now! http://www.accelacomm.com/jaw/sfnl/114/51491232/ _______________________________________________ VirtualGL-Users mailing list VirtualGL-Users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/virtualgl-users
