tree fc8cdeafcaa907dcac88087649306a7850061ac1
parent 9d1171d1ce2239cb37850f37a5418bb58e2efcf6
author Mike Klein <mtklein@google.com> 1556124160 -0500
committer Skia Commit-Bot <skia-commit-bot@chromium.org> 1556139538 +0000

cut SK_SAMPLES_FOR_X, simplify SK_?32_SHIFT

SK_SAMPLES_FOR_X doesn't do anything other than set the SK_?32_SHIFT
macros, so we can just set them instead, and further we can derive
everything we need from SK_R32_SHIFT.

Change-Id: I766d00c868da04939208353d09201f189a99c0c7
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/210121
Commit-Queue: Hal Canary <halcanary@google.com>
Reviewed-by: Hal Canary <halcanary@google.com>
Auto-Submit: Mike Klein <mtklein@google.com>