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Adding VK_KHR_shared_presentable_image basic support

Lior Dekel requested to merge Lior.Dekel/vulkan-wsi-layer:shared_presentable_image_surface_support into master

To comply with ICDs that expose the VK_KHR_shared_presentable_image extension, the Layer needs to handle VkSharedPresentSurfaceCapabilitiesKHR struct (holds sType=VK_STRUCTURE_TYPE_SHARED_PRESENT_SURFACE_CAPABILITIES_KHR) for queries on the VkSurfaces managed by the Layer. A simple implementation that sets the minimum required flags is provided in this commit. Since no WSI layer swapchain will support the shared presentable modes, no other functionality is required. VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT must be included in the sharedPresentSupportedUsageFlags field but implementations may support additional usages.

Signed-off-by: Lior Dekel lior.dekel@arm.com Change-Id: I73b29e54a84376c663b3cada989c910d1ba27293

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