SkBlitter is not thread safe; make one for each thread.
Otherwise, GM fancy_gradients would be drawn incorrectly and TSAN
will issue alerts as SkARGB32_Shader_Blitter has its own memory
that may be written during blitting.
As we make one blitter for each thread, we also don't need to
send in a thread-alloc for blitCoverageDeltas
Bug: skia:
Change-Id: Ie4ee0886b88c797ab57c65674b0b7527501b164f
Reviewed-on: https://skia-review.googlesource.com/120641
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Yuqian Li <liyuqian@google.com>
6 files changed