d_a_heitbrink wrote: > > What we did for our test was trigger a A/D deviceto I think a go from 0 to > 5v, and a we added a line in our fragment shader to over ride the color and > set it to white, or black depending on a value of a uniform. We change the > Uniform to 1 (to set it to white) and sent out our 5 v signal at the same > time. Both were set at the start of a frame. We used a photo diode to pick up > the change from black to white, and hooked that and our 5v signal to a > oscilloscope.
Well, this is pretty much exactly my method. But instead of an oscilloscope I sample the signal with a A/D capture card at 10KHz. Here is the promised data about the Oculus Rift DK1 & DK2: Oculus Rift DK1 + Vsync Off Min: 16.8 Max: 60.0 Avg: 37.6 Oculus Rift DK1 + Vsync On Min: 34.0 Max: 79.1 Avg: 48.1 Oculus Rift DK2 + Vsync Off Min: 17.0 Max: 65.0 Avg: 39.6 Oculus Rift DK2 + Vsync On Min: 24.0 Max: 70.1 Avg: 43.6 I also tested the latency on a Philips GLine screen, which supports Nvidia G-Sync. But I had to change GPU to do this, since G-Sync requires DisplayPort 1.2. So I had to upgrade to a GTX 770 card. Philips GLine + 60 Hz + Vsync Off Min: 2.8 Max: 23.0 Avg: 12.2 Philips GLine + 60Hz + Vsync On Min: 37.0 Max: 63.1 Avg: 60.7 Philips GLine + 60 Hz + Gsync Min: 58.9 Max: 63.1 Avg: 60.9 Philips GLine + Native 144Hz + Vsync On Min: 22.9 Max: 26.1 Avg: 24.5 Best regards Björn ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=63548#63548 _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
