tree bdf681040600c10efe22b16e3aa2baec98d3a7fd
parent 710b62fdf1227d0da9c890b4d43f3f1c447f7fc9
author Sunny Sachanandani <sunnyps@chromium.org> 1708979765 +0000
committer Dawn LUCI CQ <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com> 1708979765 +0000

d3d12: Reintroduce DXGI keyed mutex support

Reintroduce DXGI keyed mutex support to the D3D12 backend, except that
the keyed mutex is now acquired in a tight scope around command buffer
execution similar to the D3D11 backend.

A KeyedMutex wrapper is introduced since we need a custom deleter to
dispose the keyed mutex with D3D11on12 and ComPtr doesn't support that.
The wrapper doesn't have a scoped Guard helper because abseil containers
don't yet support transparent comparator/hash functions and we don't
have too many places where we acquire and release the keyed mutex.

The SharedTextureMemory concurrent read test is now enabled on both
D3D11 and D3D12 when using keyed mutex.

Bug: dawn:2311
Change-Id: I78272990ef4d7ebd5ade45ab98542423e020e0cc
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/171741
Reviewed-by: Austin Eng <enga@chromium.org>
Commit-Queue: Sunny Sachanandani <sunnyps@chromium.org>
Auto-Submit: Sunny Sachanandani <sunnyps@chromium.org>
Kokoro: Kokoro <noreply+kokoro@google.com>