https://bugs.freedesktop.org/show_bug.cgi?id=34495 --- Comment #31 from Pierre-Eric Pelloux-Prayer <pelloux@xxxxxxxxx> 2011-07-01 10:33:20 PDT --- (In reply to comment #29) > More food for thought: > > Using an fbo which is bigger than 1x1 is a waste of space since we only want to > know Z values. Using a 32x32 fbo with some custom shaders we could handle 32*32 > entries and so on. > > With some more shader magic maybe we could have the left half of the fbo for > minZ values and the other half for maxZ values? > > Am I dreaming or is this doable? I tried smaller FBO (8x8 I think), but the selection in Blender worked less reliably. But maybe that was related to wrong Z values being returned, and thus causing problem to Blender's selection algorithm. And, using 2 FBO might not be that expensive 1) if they are small 2) if state changes and read back are batched But I'm far from being an expert, so I guess we'll need to build it first to see if how well it performs. Thanks for the help ! -- Configure bugmail: https://bugs.freedesktop.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug. _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
