Austin Eng bf3611ce73 Add tests for using a subresource as output attachment
This adds tests that it is possible to render into a subresource bound
as an output attachment. Attaching a subresource as an output attachment
is still not implemented correctly on OpenGL and Metal.

This CL also adds a helper to DawnTest to allow checking stencil buffer
contents.

Bug: dawn:430
Change-Id: Ic8652dd9da8d3c7a47d7b0548306e2054f642e7d
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/22164
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Corentin Wallez <cwallez@chromium.org>
2020-05-28 08:29:03 +00:00
..