tree 9559cce771bd7f7546437bf9afa4a3317a49dee6
parent 38ba51ce7ad82a4b4935ca5e71ea1570e2dd9ca3
author Austin Eng <enga@chromium.org> 1596122737 +0000
committer Commit Bot service account <commit-bot@chromium.org> 1596122737 +0000

Rephrase Format::aspect enum as an enum class mask

Format::aspect should be a mask so that it is easier to iterate over
and test if an aspect is present.

This CL also re-exports wgpu's EnumClassBitMask helpers in dawn_native.
It also adds an EnumMaskIterator which wraps BitSetIterator to allow
iterating over the enums in an enum mask.

Bug: dawn:439
Change-Id: I08180a45b27c6031e2f80b0fa1801716677fd813
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/24682
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Jiawei Shao <jiawei.shao@intel.com>
Commit-Queue: Austin Eng <enga@chromium.org>