Corentin Wallez df90930683 wire::client: Make Buffer::MapAsync surface server-side errors.
In the WebGPU specification, validation errors for mapAsync take
precedence over the early-unmap or early-destroy promise resolution.

Change the client to wait for the mapAsync status from the server before
sending the cancelation through the callback. If the server sends back
an error, then it takes precedence over the client-side status.

Also adds tests for the updated semantic.

Bug: dawn:445

Change-Id: I7bf1d8bbb3cb62d73ab19ecdf0aad2963e854964
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/29300
Commit-Queue: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Stephen White <senorblanco@chromium.org>
2020-10-05 11:03:21 +00:00
..
2020-07-10 20:33:08 +00:00