vulkan - 关于 MoltenVK 上 VK_KHR_portability_subset 的 Vulkan 验证警告 catch-22

Question

我在 Big Sur（2014 年中 15" Retina）上使用带有 MoltenVK（和 GLFW）的 Vulkan 1.2.170。我创建了实例，VK_LAYER_KHRONOS_validation当我打电话时vkCreateDevice我收到警告

VUID-VkDeviceCreateInfo-pProperties-04451(ERROR / SPEC): msgNum: 976972960 - Validation Error:
 [ VUID-VkDeviceCreateInfo-pProperties-04451 ] Object 0: handle = 0x10cfaad00, 
type = VK_OBJECT_TYPE_PHYSICAL_DEVICE; | MessageID = 0x3a3b6ca0 | vkCreateDevice: 
VK_KHR_portability_subset must be enabled because physical device VkPhysicalDevice 0x10cfaad00[] 
supports it The Vulkan spec states: If the [VK_KHR_portability_subset] extension is included in 
pProperties of vkEnumerateDeviceExtensionProperties, ppEnabledExtensions must include 
"VK_KHR_portability_subset".

好的，好的，我将它添加到 extensions 参数作为唯一的扩展名。然后它说

Missing extension required by the device extension VK_KHR_portability_subset:
VK_KHR_get_physical_device_properties2.

和段错误。如果我添加VK_KHR_get_physical_device_properties2，它会崩溃说它不存在，这是真的（vkEnumerateDeviceExtensionProperties不返回它）。

这是一个错误还是它会接受一些扩展？

如果有帮助，支持的扩展是

VK_KHR_16bit_storage VK_KHR_8bit_storage VK_KHR_bind_memory2 VK_KHR_create_renderpass2 VK_KHR_dedicated_allocation VK_KHR_depth_stencil_resolve VK_KHR_descriptor_update_template VK_KHR_device_group VK_KHR_driver_properties VK_KHR_external_fence VK_KHR_external_memory VK_KHR_external_semaphore VK_KHR_get_memory_requirements2 VK_KHR_image_format_list VK_KHR_maintenance1 VK_KHR_maintenance2 VK_KHR_maintenance3 VK_KHR_multiview VK_KHR_portability_subset VK_KHR_push_descriptor VK_KHR_relaxed_block_layout VK_KHR_sampler_mirror_clamp_to_edge VK_KHR_sampler_ycbcr_conversion VK_KHR_shader_draw_parameters VK_KHR_shader_float16_int8 VK_KHR_storage_buffer_storage_class VK_KHR_swapchain VK_KHR_swapchain_mutable_format VK_KHR_timeline_semaphore VK_KHR_uniform_buffer_standard_layout VK_KHR_variable_pointers VK_EXT_debug_marker VK_EXT_descriptor_indexingVK_EXT_fragment_shader_interlock VK_EXT_hdr_metadata VK_EXT_host_query_reset VK_EXT_image_robustness VK_EXT_inline_uniform_block VK_EXT_memory_budget VK_EXT_private_data VK_EXT_robustness2 VK_EXT_scalar_block_layout VK_EXT_shader_viewport_index_layer VK_EXT_subgroup_size_control VK_EXT_texel_buffer_alignment VK_EXT_vertex_attribute_divisor VK_AMD_gpu_shader_half_float VK_AMD_negative_viewport_height VK_AMD_shader_trinary_minmax VK_INTEL_shader_integer_functions2 VK_GOOGLE_display_timing VK_NV_glsl_shaderVK_AMD_gpu_shader_half_float VK_AMD_negative_viewport_height VK_AMD_shader_trinary_minmax VK_INTEL_shader_integer_functions2 VK_GOOGLE_display_timing VK_NV_glsl_shaderVK_AMD_gpu_shader_half_float VK_AMD_negative_viewport_height VK_AMD_shader_trinary_minmax VK_INTEL_shader_integer_functions2 VK_GOOGLE_display_timing VK_NV_glsl_shader

标签： vulkanmoltenvk

Answer 1

原来VK_KHR_get_physical_device_properties2是一个实例扩展，而不是一个设备扩展，所以它被传递给vkCreateInstance这样的：

VkInstanceCreateInfo instCreateInfo;
const char* instExtension = "VK_KHR_get_physical_device_properties2";
instCreateInfo.enabledExtensionCount = 1;
instCreateInfo.ppEnabledExtensionNames = &instExtension;
// etcetera
VkInstance instance;
vkCreateInstance(&instCreateInfo, nullptr, &instance);

// ...

VkDeviceCreateInfo deviceCreateInfo;
const char* deviceExtension = "VK_KHR_portability_subset";
deviceCreateInfo.enabledExtensionCount = 1;
deviceCreateInfo.ppEnabledExtensionNames = &deviceExtension;
// etcetera
VkDevice device;
vkCreateDevice(physicalDevice, &deviceCreateInfo, nullptr, &device);