VkSwapchainCreateInfoKHR still disallows CONCURRENT when queueFamilyIndexCount is 1 even with maintenance11

[Cyphall]

maintenance11 allows setting sharingMode to CONCURRENT when queueFamilyIndexCount is 1.
This was applied to VkImageCreateInfo, VkBufferCreateInfo, VkPhysicalDeviceImageDrmFormatModifierInfoEXT and VkTensorCreateInfoARM, but not to VkSwapchainCreateInfoKHR.

As it stands, VUID-VkSwapchainCreateInfoKHR-imageSharingMode-01278 still unconditionally requires that queueFamilyIndexCount is > 1 when sharingMode is CONCURRENT.

Is that intended?

[nanokatze]

Yes, when writing the spec for this I wasn't sure whether interactions between ordinary maint exts and WSI are okay. Either way this would probably have to be addressed in a future maint or, more likely, swapchain_maint ext. Thanks for the reminder, I completely forgot about this leftover.

[oddhack]

Assigning this to the SI TSG.