tree d9312e41bde5ac7a50e813c8c79cd5b58c86d127
parent 216c10d2703b888537457e6419ab25171fa2630e
author Jiawei Shao <jiawei.shao@intel.com> 1589847071 +0000
committer Commit Bot service account <commit-bot@chromium.org> 1589847071 +0000

Disallow the copies within the same buffer

This patch adds the validation that forbids the buffer-to-buffer copies
when the source and destination buffer are the same one as in D3D12 the
Source and Destination resource cannot be the same when doing a
CopyBufferRegion.

BUG=dawn:17, dawn:420
TEST=dawn_unittests

Change-Id: Ie3e0c5361919ff369240a65d6e7fbae05b8332b0
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/21780
Reviewed-by: Bryan Bernhart <bryan.bernhart@intel.com>
Reviewed-by: Austin Eng <enga@chromium.org>
Commit-Queue: Jiawei Shao <jiawei.shao@intel.com>