Horde3D

I experimented with multi-sample antialiasing, and found that the CPU consumption is higher with increasing sample count. where is the CPU busy? in horde3d, in driver, or where. Is that normal or buggy? I get increases from 75% to 100% from 0 to 16 sample counts. I tried adding maxSamples to the deferred pipeline, and the modified HDR pipeline of http://www.horde3d.org/forums/viewtopic.php?f=1&t=518. I understand worse frame ratio, but is not MSAA hardware accelerated? (NVIDIA GeForce GT 220 here). Thank you in advance.

Where those numbers are coming from? Are you using a profiler (such as VTune, ...) ?

no, poor man's windows task manager performance bar.

Is vsync on or off? If vsync is off, that's normal. Turn on the vsync and try again.