tree aafb569c3e6f3a5c1c73bdc55d6067eee51e72e5
parent fce44b5fe1fe63021310bdd50e34e4d22fca7d22
author Jiawei Shao <jiawei.shao@intel.com> 1589329035 +0000
committer Commit Bot service account <commit-bot@chromium.org> 1589329035 +0000

Add validation on the buffer-to-buffer copies within same buffer

This patch adds the validation on the buffer-to-buffer copies within the
same buffer. When the source and destination buffer are the same one in
CopyBufferToBuffer(), the copy region cannot overlap or it will cause
undefined behaviors on Metal and Vulkan.

BUG=dawn:17
TEST=dawn_unittests, dawn_end2end_tests

Change-Id: I63ab790787ec0a973ae22787a9348bddfb6a5373
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/21602
Reviewed-by: Austin Eng <enga@chromium.org>
Commit-Queue: Jiawei Shao <jiawei.shao@intel.com>