Hi Tim, I've continued to try various combinations of tests out and can't yet figure out why the call
GLint bits = 0; extensions->glGetQueryiv(GL_TIMESTAMP, GL_QUERY_COUNTER_BITS_ARB, &bits); Is resulting in a 'invalid enumerant' error. I also added another test alongside the GL_TIMESTAMP one: extensions->glGetQueryiv(TIME_ELAPSED, GL_QUERY_COUNTER_BITS_ARB, &bits), And this works fine and returns a value of 32 for bits, so it would at seem like the driver just doesn't like GL_TIMESTAMP and GL_QUERY_COUNTER_BITS_ARB together. Curiously I'm getting values out of the State::frameCompleted() method, an sample of the output I get if I ignore the getTimestampBits() being set to 0. State::frameCompleted() setting time stamp. timestamp=7378321843000 State::frameCompleted() setting time stamp. timestamp=7378377420000 State::frameCompleted() setting time stamp. timestamp=7378377669000 State::frameCompleted() setting time stamp. timestamp=7378378034000 State::frameCompleted() setting time stamp. timestamp=7378389865000 State::frameCompleted() setting time stamp. timestamp=7378443963000 State::frameCompleted() setting time stamp. timestamp=7378444120000 State::frameCompleted() setting time stamp. timestamp=7378444335000 What type of values do you get for timestamp for NVidia? Robert. _______________________________________________ osg-submissions mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-submissions-openscenegraph.org
