{
	"register_extension":
	{
		"type": "device",
		"core": ""
	},
	"mandatory_features":
	{
		"VkPhysicalDevicePresentWaitFeaturesKHR":
		[
			{ "features": ["presentWait"],	"requirements": ["VK_KHR_present_wait"],		"mandatory_variant": ["vulkan"] }
		]
	}
}