tree a7d0531ff2f30654e468b10180e31312732819b1
parent 1c92c159adf995b450275de69407625328bb2796
author Jiawei Shao <jiawei.shao@intel.com> 1551663098 +0000
committer Commit Bot service account <commit-bot@chromium.org> 1551663098 +0000

Add validation on the creation of 4x Multisampled textures

This patch adds validations on the creation of the multisampled textures
with sampleCount == 4. The validations include:
1. Only accept 1 or 4 as valid value of sampleCount.
2. According to Vulkan SPEC, when sampleCount > 1:
- The value of mipLevelCount can only be 1
- We cannot create cube map or cube map array texture views on this
  texture.

BUG=dawn:56
TEST=dawn_unittests

Change-Id: Iac7cbe7cd7af16216b9185afd37a80eef0712f6b
Reviewed-on: https://dawn-review.googlesource.com/c/5160
Commit-Queue: Jiawei Shao <jiawei.shao@intel.com>
Reviewed-by: Kai Ninomiya <kainino@chromium.org>