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Adding VK_KHR_shared_presentable_image basic support

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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
This commit is contained in:
Lior Dekel 2022-09-07 13:42:33 +03:00
parent 962472c729
commit 908518c92e
1 changed files with 7 additions and 0 deletions
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7
layer/surface_api.cpp
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@ -63,6 +63,13 @@ wsi_layer_vkGetPhysicalDeviceSurfaceCapabilities2KHR(VkPhysicalDevice physicalDe
wsi::surface_properties *props = wsi::get_surface_properties(instance, pSurfaceInfo->surface);
assert(props != nullptr);
auto shared_present_surface_cap_struct = util::find_extension<VkSharedPresentSurfaceCapabilitiesKHR>(
VK_STRUCTURE_TYPE_SHARED_PRESENT_SURFACE_CAPABILITIES_KHR, pSurfaceCapabilities);
if (shared_present_surface_cap_struct != nullptr)
{
shared_present_surface_cap_struct->sharedPresentSupportedUsageFlags = VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
}
/*
* Any of the extensions that extend pSurfaceInfo are not supported by the
* swapchain implementation so it is safe to ignore pNext here, even if