tree 4904054dfe419aeb9ec41813ea3ad6a921128937
parent d543d58760b20c3e414fe39e9232dfa2f8692886
author Jiawei Shao <jiawei.shao@intel.com> 1587430090 +0000
committer Commit Bot service account <commit-bot@chromium.org> 1587430090 +0000

Validate texture usage scope with storage textures in one render pass

This patch adds the validation rules on the texture usage scope with
storage textures in one render pass.
1. Write-only storage cannot be used in combination with anything else
in the same render pass.
2. Sampled and read-only storage are allowed to be used in the same
render pass.

This patch also adds dawn_unittests to test the storage texture usage
scope in one render pass:
1. read-only or write-only storage only
2. read-only or write-only storage + sampled
3. read-only or write-only storage + output attachment
4. read-only + write-only

This patch also removes kWritableBufferUsages as it is not used in Dawn
at all.

BUG=dawn:267
TEST=dawn_unittests

Change-Id: Ib2a0f06ec8d183c5f812f87459c6b1b8f79937e0
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/19820
Commit-Queue: Jiawei Shao <jiawei.shao@intel.com>
Reviewed-by: Austin Eng <enga@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>