tree 190144f7eaa2c2afb61551fe1ec25d6802c4a759
parent b84576af0a4386a88bf5f8453b8ff7bc0db3adcc
author Ben Wagner <bungeman@google.com> 1535752099 -0400
committer Skia Commit-Bot <skia-commit-bot@chromium.org> 1536084056 +0000

Make fallback font iterator in shaper cache fallback.

Most of the time when doing fallback there is a simple ping pong between
the requested font and a given fallback font. Use the fallback entry as
a cache of one. This greatly speeds up the example layout.

In the future more work will be done on caching.

Change-Id: I3efe819d6d08d096715cf505cc8d894a282a745b
Reviewed-on: https://skia-review.googlesource.com/151100
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>