tree bda1b5816a2333a6c70753f861aac9f412b4515a
parent 4e75f4556e8beab8c11a1c1c2e8ccad1db0d220d
author Yilong Li <liyl@google.com> 1611997614 -0800
committer swiftshader-scoped@luci-project-accounts.iam.gserviceaccount.com <swiftshader-scoped@luci-project-accounts.iam.gserviceaccount.com> 1612068439 +0000

Allow sampling usage when querying linear image format properties.

Currently, VkImages with VK_IMAGE_TILING_OPTIMAL tiling actually
also have a linear texel layout in our current implementation,
thus it can be sampled or used as blit source. And we would
like to add support to sampling features for linear images when
calling vkGetPhysicalDeviceImageFormatProperties() to query image
format properties.

Exceptions include images with compressed formats and images
created to be used as cube maps.

This will unblock SwiftShader users like AEMU/FEMU from sampling
host-visible memory shared between guest processes.

Bug: b/171299814
Bug: fuchsia:54153
Bug: fuchsia:68365
Test: dEQP-VK.*

Change-Id: Id9019fc9d9239fc85d0d2b086d4efd468844d254
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/49108
Kokoro-Result: kokoro <noreply+kokoro@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>
Commit-Queue: Yilong Li <liyl@google.com>
Tested-by: Yilong Li <liyl@google.com>