> i965 is fully programmable.  It can do vertex, geometry, hull, domain, and
> fragment shading in hardware.  The only thing the i965 classic driver uses
> software rendering for is some deprecated and rarely used GL 1.x features.

I think the original 965G and 965GM chip suffered from a balance
problem, where at least under Windows driver for a time, it ran the
Vertex shader pipeline on the CPU, because it was overall faster than
running VS and FS on the GPU.

Dave.
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