What did we learn today? 255 != 256
authormtklein <mtklein@chromium.org>
Thu, 25 Jun 2015 17:26:46 +0000 (10:26 -0700)
committerCommit bot <commit-bot@chromium.org>
Thu, 25 Jun 2015 17:26:46 +0000 (10:26 -0700)
commitb0c5071a376ecfb608c49886f2c86b1ce40b1389
tree7e84b5677cc0aaf6723beba10a09dc7bba85f1cc
parente9a3e3c17a313942042d6cfb9f4f0361a900d9e7
What did we learn today?  255 != 256

vcvt_n_f32_u32 and _u32_f32 work in power-of-2 fixed point, so (...,8)
meant 'please multiply or divide by 256'.  We need to use 255.  :(

BUG=skia:

Review URL: https://codereview.chromium.org/1204363002
src/opts/SkPMFloat_neon.h