tree fbf99e52dc4327b9197e5bc67688277293851e41
parent 678f6b1a55a9b50becc3b84ea971ab55638d478d
author Mike Klein <mtklein@chromium.org> 1516826195 -0500
committer Skia Commit-Bot <skia-commit-bot@chromium.org> 1516829940 +0000

Keep SkRasterPipelineSpriteBlitter's src/dst offset math in size_t

With big enough y and stride (e.g. 27 and ~20000000) the expression

    - bpp*x - bpp*y*fSrcPtr.stride

can underflow, and cause mayhem.

Bug: chromium:797796
Change-Id: Ifc412230c4c7eadfcd36446113be9ac1753b5b1c
Reviewed-on: https://skia-review.googlesource.com/99343
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Klein <mtklein@chromium.org>