tree a0c55d6c1e80d17db5ccf98200e3044fa640387d
parent bd5eb6fa269ab9599f76f36d4cd8e0be11684f85
author Yunchao He <yunchao.he@intel.com> 1640059342 +0000
committer Dawn LUCI CQ <dawn-scoped@luci-project-accounts.iam.gserviceaccount.com> 1640059342 +0000

Implement readonly depth/stencil without sample from it

This change add a couple end2end tests when readonly depth/stencil
attahcment is enabled in render pass and the pipeline doesn't
sample from the depth/stencil attachment. The pipeline only do
depth/stencil test.

This situation may not be useful in real world applications. But
it is possible that developers do it in this way. And it impacts
the implementation on some backend like Vulkan.

Bug: dawn:485
Change-Id: I8a81330659295cd4a2f00591b6ead719538babd9
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/71441
Reviewed-by: Austin Eng <enga@chromium.org>
Commit-Queue: Yunchao He <yunchao.he@intel.com>