[skottie] Tweak skottie_tool --threads meaning
There's an implicit +1 to the SkTaskGroup worker count, as the
main/scheduling thread also participates in the queue.
This is quite confusing.
Adjust the --threads parameter such that 1 means single threaded,
2 means rendering on two threads, etc.
Change-Id: Ib55c4b0a29cb342c7d18a15384e1c511614ee7af
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/243740
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>
1 file changed