Austin Eng 74d4e53fc6 Make loapOp/storeOp undefined valid
It is valid for depth/stencil attachment if the attachments are
readonly. It is not valid for color attachments. Make the enum valid,
and update validation.

Caught in CTS roll
https://chromium-review.googlesource.com/c/chromium/src/+/3499286

Bug: dawn:1269
Change-Id: Ib849ed757ccca145f85cadea6f92a1f2a5082d49
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/82540
Reviewed-by: Loko Kung <lokokung@google.com>
Reviewed-by: Brandon Jones <bajones@chromium.org>
Commit-Queue: Austin Eng <enga@chromium.org>
2022-03-09 18:43:51 +00:00
..
2022-03-05 01:34:02 +00:00
2022-02-21 17:56:32 +00:00
2022-02-11 00:45:51 +00:00