snow: only create n_cpus fragments

Since snow_context_t needs another member anyways, stick n_cpus in there
to inform the fragmenter of precisely how many fragments to make.

This renderer doesn't benefit from tiling or any such locality, so it uses
the slice fragmenter and really only benefits from as many fragments as there
are CPUs.  Any additional fragments is just wasted fragmenting overhead.

0 files changed, 0 insertions, 0 deletions