I try the tutorial on Quartz Composer Programming Guide
(qc_howto.pdf). At page 42, before "Increase the Glow Effect", in
the viewer, i have 2-3 fps on the rotating cube.
I have an iMac G5 1.8 GHz GeForce FX 5200, but the OpenGL Info
patch say this : "Core Image accelerated" : FALSE (the name for my
video card is "NVIDIA NV34MAP OpenGL Engine" in the openGL Info
patch).
Why?
iMac G5 is Core Image Ready.
Is 2-3 fps a normal performance on iMac G5 ?
That is the correct behavior: the FX5200 can potentially support Core
Image in hardware, but does not by default, as in many cases,
rendering on the CPU gives better performances.