I suppose if all it's doing is drawing rectangular window borders in the same way that people have for the last thirty years, then software OpenGL will be easily fast enough to do it.
Posted Aug 7, 2009 4:11 UTC (Fri) by drag (subscriber, #31333)
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EXACTLY.
OS X used composited desktop with NO acceleration AT ALL for a long time.
They didn't have acceleration until 'Quartz Extreme' came out. You know what the hardware requirements were for GPU driven compositing?
* AMD (ATI) Radeon, AGP-based, 16MB VRAM minimum, or better
* NVIDIA GeForce2 MX, 16MB VRAM minimum, or better
OS X 10.0 came out over EIGHT YEARS AGO with a software-driven composited desktop. This thing ran fine on PowerMAC G3 with 266mhz processors. I know, because I had to set them up for a part-time job I had at the time. (as long as you had enough RAM)