Function ovr_GetSessionPhysicalDeviceVk

ReviveXR/REV_CAPI_Vk.cpp:93–135

OVR_PUBLIC_FUNCTION(ovrResult)
ovr_GetSessionPhysicalDeviceVk(
	ovrSession session,
	ovrGraphicsLuid luid,
	VkInstance instance,
	VkPhysicalDevice* out_physicalDevice)
{
	XR_FUNCTION(session->Instance, GetVulkanGraphicsDeviceKHR);

	if (!out_physicalDevice)
		ovrError_InvalidParameter;

	VulkanLibrary = LoadLibraryW(L"vulkan-1.dll");
	if (!VulkanLibrary)
		return ovrError_InitializeVulkan;

	VK_LIBRARY_FUNCTION(VulkanLibrary, vkGetInstanceProcAddr);
	VK_INSTANCE_FUNCTION(instance, vkGetDeviceProcAddr);
	VK_INSTANCE_FUNCTION(instance, vkGetPhysicalDeviceProperties);
	VK_INSTANCE_FUNCTION(instance, vkGetPhysicalDeviceQueueFamilyProperties);

	CHK_XR(GetVulkanGraphicsDeviceKHR(session->Instance, session->System, instance, &g_Binding.physicalDevice));
	g_Binding.instance = instance;

	VkPhysicalDeviceProperties props;
	vkGetPhysicalDeviceProperties(g_Binding.physicalDevice, &props);

	// The extension uses the OpenXR version format instead of the Vulkan one
	XrVersion version = XR_MAKE_VERSION(
		VK_VERSION_MAJOR(props.apiVersion),
		VK_VERSION_MINOR(props.apiVersion),
		VK_VERSION_PATCH(props.apiVersion)
	);

	// This should always succeed, it's more of a sanity check
	XR_FUNCTION(session->Instance, GetVulkanGraphicsRequirementsKHR);
	XrGraphicsRequirementsVulkanKHR graphicsReq = XR_TYPE(GRAPHICS_REQUIREMENTS_VULKAN_KHR);
	CHK_XR(GetVulkanGraphicsRequirementsKHR(session->Instance, session->System, &graphicsReq));
	if (version < graphicsReq.minApiVersionSupported)
		return ovrError_IncompatibleGPU;

	*out_physicalDevice = g_Binding.physicalDevice;
	return ovrSuccess;
}

#undef ovr_SetSynchonizationQueueVk
OVR_PUBLIC_FUNCTION(ovrResult) ovr_SetSynchonizationQueueVk(ovrSession session, VkQueue queue)