gl3 Conditional Render

[Barnes]

I am a very long time trying to use this extension, but faced with constant challenges. On the ati card is not working at all, even though the drivers have the support of the original expansion from Nvidia. We have long been "kicked" them as support. Only one answer is "yes we know, we work." And the silence ... Not not one month since.... On Nvidia's also not going smoothly - great job on the gf260 - gf660ti and bugs on the old 9800gt and a new dual-chip 690. But occusion query works fine booth nv-ati (bugs were on the ati but they corrected) but it is very slow. Losing such an extension that gives up to 20 fps at light cull is not very desirable.....