add matrix compare to text blob key
In multi-threaded use, the cache would return a blob with direct
sub runs without comparing matrices. If two direct blobs have
different matrices, then they are incompatible. The original
code would find that the blob did not exist in the cache.
It would then make a new blob and insert it into the cache.
During that time, a different thread would create an
incompatible blob and insert it into the cache. The original
thread would insert the new blob into the cache, but the cache
finding an existing blob would return the incompatible blob.
The solution was to make the matrix, and drawing type part of
the key. Now, only compatible blobs are returned from the cache.
Change-Id: I318c756f07c84dd48b353b25639f9dcbe80c7b4b
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/377976
Commit-Queue: Herb Derby <herb@google.com>
Reviewed-by: Robert Phillips <robertphillips@google.com>
4 files changed