If creation of frame-buffer object for saving of a screenshot fails, fallback to using back-buffer. This can be disabled via the following rootrc setting:   OpenGL.SavePictureFallbackToBB: off
If creation of frame-buffer object for saving of a screenshot fails, fallback
to using back-buffer. This can be disabled via the following rootrc setting:
  OpenGL.SavePictureFallbackToBB: off

Latest SLC5, SLC6 intel/mesa drivers seem to be good at lying that they
support FBOs and then flipping backwards once you ask them to cough up one.


git-svn-id: acec3fd5b7ea1eb9e79d6329d318e8118ee2e14f@44695 27541ba8-7e3a-0410-8455-c3a389f83636

veprbl/root,nilqed/root,BerserkerTroll/root,gbitzes/root,omazapa/root-old,evgeny-boger/root,CristinaCristescu/root,alexschlueter/cern-root,zzxuanyuan/root,bbockelm/root,veprbl/root,zzxuanyuan/root-compressor-dummy,bbockelm/root,root-mirror/root,0x0all/ROOT,veprbl/root,cxx-hep/root-cern,karies/root,abhinavmoudgil95/root,root-mirror/root,smarinac/root,zzxuanyuan/root,Duraznos/root,alexschlueter/cern-root,abhinavmoudgil95/root,gganis/root,omazapa/root,buuck/root,sawenzel/root,esakellari/root,zzxuanyuan/root-compressor-dummy,thomaskeck/root,zzxuanyuan/root-compressor-dummy,pspe/root,sirinath/root,esakellari/my_root_for_test,esakellari/root,omazapa/root-old,sawenzel/root,sawenzel/root,gbitzes/root,bbockelm/root,cxx-hep/root-cern,esakellari/root,gganis/root,Y--/root,satyarth934/root,simonpf/root,nilqed/root,karies/root,sawenzel/root,Duraznos/root,olifre/root,zzxuanyuan/root,sirinath/root,abhinavmoudgil95/root,sirinath/root,davidlt/root,georgtroska/root,evgeny-boger/root,thomaskeck/root,bbockelm/root,karies/root,olifre/root,mhuwiler/rootauto,agarciamontoro/root,cxx-hep/root-cern,cxx-hep/root-cern,georgtroska/root,esakellari/root,omazapa/root,buuck/root,smarinac/root,gbitzes/root,mattkretz/root,omazapa/root,buuck/root,agarciamontoro/root,esakellari/my_root_for_test,karies/root,esakellari/root,root-mirror/root,vukasinmilosevic/root,zzxuanyuan/root-compressor-dummy,root-mirror/root,mkret2/root,olifre/root,dfunke/root,simonpf/root,agarciamontoro/root,arch1tect0r/root,simonpf/root,bbockelm/root,sirinath/root,beniz/root,dfunke/root,nilqed/root,esakellari/my_root_for_test,root-mirror/root,zzxuanyuan/root,abhinavmoudgil95/root,lgiommi/root,georgtroska/root,esakellari/my_root_for_test,arch1tect0r/root,lgiommi/root,dfunke/root,mattkretz/root,nilqed/root,omazapa/root,Duraznos/root,krafczyk/root,esakellari/root,perovic/root,jrtomps/root,Y--/root,buuck/root,0x0all/ROOT,zzxuanyuan/root,arch1tect0r/root,lgiommi/root,sawenzel/root,agarciamontoro/root,Y--/root,buuck/root,simonpf/root,simonpf/root,smarinac/root,omazapa/root-old,CristinaCristescu/root,krafczyk/root,omazapa/root,davidlt/root,perovic/root,evgeny-boger/root,buuck/root,perovic/root,esakellari/root,omazapa/root,simonpf/root,0x0all/ROOT,perovic/root,buuck/root,gganis/root,evgeny-boger/root,sirinath/root,beniz/root,Y--/root,arch1tect0r/root,vukasinmilosevic/root,thomaskeck/root,perovic/root,beniz/root,satyarth934/root,bbockelm/root,sbinet/cxx-root,karies/root,sawenzel/root,BerserkerTroll/root,davidlt/root,agarciamontoro/root,krafczyk/root,mkret2/root,nilqed/root,mkret2/root,mattkretz/root,gbitzes/root,arch1tect0r/root,CristinaCristescu/root,olifre/root,esakellari/my_root_for_test,sirinath/root,olifre/root,davidlt/root,veprbl/root,thomaskeck/root,olifre/root,pspe/root,satyarth934/root,mattkretz/root,lgiommi/root,krafczyk/root,root-mirror/root,esakellari/my_root_for_test,dfunke/root,pspe/root,alexschlueter/cern-root,nilqed/root,lgiommi/root,olifre/root,smarinac/root,abhinavmoudgil95/root,CristinaCristescu/root,bbockelm/root,omazapa/root,omazapa/root,mhuwiler/rootauto,sbinet/cxx-root,zzxuanyuan/root-compressor-dummy,thomaskeck/root,esakellari/root,gbitzes/root,pspe/root,georgtroska/root,pspe/root,gganis/root,davidlt/root,pspe/root,zzxuanyuan/root-compressor-dummy,0x0all/ROOT,olifre/root,satyarth934/root,zzxuanyuan/root-compressor-dummy,BerserkerTroll/root,zzxuanyuan/root-compressor-dummy,0x0all/ROOT,alexschlueter/cern-root,pspe/root,karies/root,simonpf/root,sirinath/root,omazapa/root-old,karies/root,zzxuanyuan/root,nilqed/root,davidlt/root,arch1tect0r/root,omazapa/root-old,krafczyk/root,gbitzes/root,sbinet/cxx-root,0x0all/ROOT,BerserkerTroll/root,abhinavmoudgil95/root,dfunke/root,satyarth934/root,thomaskeck/root,CristinaCristescu/root,agarciamontoro/root,sbinet/cxx-root,sawenzel/root,zzxuanyuan/root-compressor-dummy,Duraznos/root,jrtomps/root,sawenzel/root,zzxuanyuan/root,smarinac/root,mattkretz/root,esakellari/my_root_for_test,sbinet/cxx-root,vukasinmilosevic/root,esakellari/my_root_for_test,mattkretz/root,gbitzes/root,bbockelm/root,mattkretz/root,georgtroska/root,krafczyk/root,nilqed/root,BerserkerTroll/root,cxx-hep/root-cern,mkret2/root,satyarth934/root,beniz/root,mhuwiler/rootauto,agarciamontoro/root,beniz/root,jrtomps/root,mkret2/root,mhuwiler/rootauto,gganis/root,dfunke/root,alexschlueter/cern-root,vukasinmilosevic/root,beniz/root,dfunke/root,Y--/root,zzxuanyuan/root,gbitzes/root,Y--/root,georgtroska/root,alexschlueter/cern-root,omazapa/root-old,vukasinmilosevic/root,smarinac/root,sawenzel/root,beniz/root,CristinaCristescu/root,veprbl/root,agarciamontoro/root,CristinaCristescu/root,gganis/root,satyarth934/root,simonpf/root,lgiommi/root,Duraznos/root,mattkretz/root,georgtroska/root,krafczyk/root,dfunke/root,jrtomps/root,mkret2/root,CristinaCristescu/root,karies/root,smarinac/root,abhinavmoudgil95/root,veprbl/root,pspe/root,CristinaCristescu/root,buuck/root,0x0all/ROOT,krafczyk/root,mhuwiler/rootauto,zzxuanyuan/root,veprbl/root,arch1tect0r/root,zzxuanyuan/root,pspe/root,b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