src/dawn_native/vulkan/VulkanInfo.cpp - dawn - Git at Google

 // Copyright 2017 The Dawn Authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 //     http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.

 #include "dawn_native/vulkan/VulkanInfo.h"

 #include "dawn_native/vulkan/AdapterVk.h"
 #include "dawn_native/vulkan/BackendVk.h"
 #include "dawn_native/vulkan/UtilsVulkan.h"
 #include "dawn_native/vulkan/VulkanError.h"

 #include <cstring>

 namespace dawn_native { namespace vulkan {

     namespace {
         ResultOrError<InstanceExtSet> GatherInstanceExtensions(
             const char* layerName,
             const dawn_native::vulkan::VulkanFunctions& vkFunctions,
             const std::unordered_map<std::string, InstanceExt>& knownExts) {
             uint32_t count = 0;
             VkResult vkResult = VkResult::WrapUnsafe(
                 vkFunctions.EnumerateInstanceExtensionProperties(layerName, &count, nullptr));
             if (vkResult != VK_SUCCESS && vkResult != VK_INCOMPLETE) {
                 return DAWN_INTERNAL_ERROR("vkEnumerateInstanceExtensionProperties");
             }

             std::vector<VkExtensionProperties> extensions(count);
             DAWN_TRY(CheckVkSuccess(vkFunctions.EnumerateInstanceExtensionProperties(
                                         layerName, &count, extensions.data()),
                                     "vkEnumerateInstanceExtensionProperties"));

             InstanceExtSet result;
             for (const VkExtensionProperties& extension : extensions) {
                 auto it = knownExts.find(extension.extensionName);
                 if (it != knownExts.end()) {
                     result.set(it->second, true);
                 }
             }

             return result;
         }

     }  // namespace

     bool VulkanGlobalKnobs::HasExt(InstanceExt ext) const {
         return extensions[ext];
     }

     bool VulkanDeviceKnobs::HasExt(DeviceExt ext) const {
         return extensions[ext];
     }

     ResultOrError<VulkanGlobalInfo> GatherGlobalInfo(const Backend& backend) {
         VulkanGlobalInfo info = {};
         const VulkanFunctions& vkFunctions = backend.GetFunctions();

         // Gather info on available API version
         {
             info.apiVersion = VK_MAKE_VERSION(1, 0, 0);
             if (vkFunctions.EnumerateInstanceVersion != nullptr) {
                 DAWN_TRY(CheckVkSuccess(vkFunctions.EnumerateInstanceVersion(&info.apiVersion),
                                         "vkEnumerateInstanceVersion"));
             }
         }

         // Gather the info about the instance layers
         {
             uint32_t count = 0;
             VkResult result =
                 VkResult::WrapUnsafe(vkFunctions.EnumerateInstanceLayerProperties(&count, nullptr));
             // From the Vulkan spec result should be success if there are 0 layers,
             // incomplete otherwise. This means that both values represent a success.
             // This is the same for all Enumarte functions
             if (result != VK_SUCCESS && result != VK_INCOMPLETE) {
                 return DAWN_INTERNAL_ERROR("vkEnumerateInstanceLayerProperties");
             }

             std::vector<VkLayerProperties> layersProperties(count);
             DAWN_TRY(CheckVkSuccess(
                 vkFunctions.EnumerateInstanceLayerProperties(&count, layersProperties.data()),
                 "vkEnumerateInstanceLayerProperties"));

             std::unordered_map<std::string, VulkanLayer> knownLayers = CreateVulkanLayerNameMap();
             for (const VkLayerProperties& layer : layersProperties) {
                 auto it = knownLayers.find(layer.layerName);
                 if (it != knownLayers.end()) {
                     info.layers.set(it->second, true);
                 }
             }
         }

         // Gather the info about the instance extensions
         {
             std::unordered_map<std::string, InstanceExt> knownExts = CreateInstanceExtNameMap();

             DAWN_TRY_ASSIGN(info.extensions,
                             GatherInstanceExtensions(nullptr, vkFunctions, knownExts));
             MarkPromotedExtensions(&info.extensions, info.apiVersion);
             info.extensions = EnsureDependencies(info.extensions);

             for (VulkanLayer layer : IterateBitSet(info.layers)) {
                 DAWN_TRY_ASSIGN(info.layerExtensions[layer],
                                 GatherInstanceExtensions(GetVulkanLayerInfo(layer).name,
                                                          vkFunctions, knownExts));
                 MarkPromotedExtensions(&info.layerExtensions[layer], info.apiVersion);
                 info.layerExtensions[layer] = EnsureDependencies(info.layerExtensions[layer]);
             }
         }

         return std::move(info);
     }

     ResultOrError<std::vector<VkPhysicalDevice>> GetPhysicalDevices(const Backend& backend) {
         VkInstance instance = backend.GetVkInstance();
         const VulkanFunctions& vkFunctions = backend.GetFunctions();

         uint32_t count = 0;
         VkResult result =
             VkResult::WrapUnsafe(vkFunctions.EnumeratePhysicalDevices(instance, &count, nullptr));
         if (result != VK_SUCCESS && result != VK_INCOMPLETE) {
             return DAWN_INTERNAL_ERROR("vkEnumeratePhysicalDevices");
         }

         std::vector<VkPhysicalDevice> physicalDevices(count);
         DAWN_TRY(CheckVkSuccess(
             vkFunctions.EnumeratePhysicalDevices(instance, &count, physicalDevices.data()),
             "vkEnumeratePhysicalDevices"));

         return std::move(physicalDevices);
     }

     ResultOrError<VulkanDeviceInfo> GatherDeviceInfo(const Adapter& adapter) {
         VulkanDeviceInfo info = {};
         VkPhysicalDevice physicalDevice = adapter.GetPhysicalDevice();
         const VulkanGlobalInfo& globalInfo = adapter.GetBackend()->GetGlobalInfo();
         const VulkanFunctions& vkFunctions = adapter.GetBackend()->GetFunctions();

         // Query the device properties first to get the ICD's `apiVersion`
         vkFunctions.GetPhysicalDeviceProperties(physicalDevice, &info.properties);

         // Gather info about device memory.
         {
             VkPhysicalDeviceMemoryProperties memory;
             vkFunctions.GetPhysicalDeviceMemoryProperties(physicalDevice, &memory);

             info.memoryTypes.assign(memory.memoryTypes,
                                     memory.memoryTypes + memory.memoryTypeCount);
             info.memoryHeaps.assign(memory.memoryHeaps,
                                     memory.memoryHeaps + memory.memoryHeapCount);
         }

         // Gather info about device queue families
         {
             uint32_t count = 0;
             vkFunctions.GetPhysicalDeviceQueueFamilyProperties(physicalDevice, &count, nullptr);

             info.queueFamilies.resize(count);
             vkFunctions.GetPhysicalDeviceQueueFamilyProperties(physicalDevice, &count,
                                                                info.queueFamilies.data());
         }

         // Gather the info about the device layers
         {
             uint32_t count = 0;
             VkResult result = VkResult::WrapUnsafe(
                 vkFunctions.EnumerateDeviceLayerProperties(physicalDevice, &count, nullptr));
             if (result != VK_SUCCESS && result != VK_INCOMPLETE) {
                 return DAWN_INTERNAL_ERROR("vkEnumerateDeviceLayerProperties");
             }

             info.layers.resize(count);
             DAWN_TRY(CheckVkSuccess(vkFunctions.EnumerateDeviceLayerProperties(
                                         physicalDevice, &count, info.layers.data()),
                                     "vkEnumerateDeviceLayerProperties"));
         }

         // Gather the info about the device extensions
         {
             uint32_t count = 0;
             VkResult result = VkResult::WrapUnsafe(vkFunctions.EnumerateDeviceExtensionProperties(
                 physicalDevice, nullptr, &count, nullptr));
             if (result != VK_SUCCESS && result != VK_INCOMPLETE) {
                 return DAWN_INTERNAL_ERROR("vkEnumerateDeviceExtensionProperties");
             }

             std::vector<VkExtensionProperties> extensionsProperties;
             extensionsProperties.resize(count);
             DAWN_TRY(
                 CheckVkSuccess(vkFunctions.EnumerateDeviceExtensionProperties(
                                    physicalDevice, nullptr, &count, extensionsProperties.data()),
                                "vkEnumerateDeviceExtensionProperties"));

             std::unordered_map<std::string, DeviceExt> knownExts = CreateDeviceExtNameMap();

             for (const VkExtensionProperties& extension : extensionsProperties) {
                 auto it = knownExts.find(extension.extensionName);
                 if (it != knownExts.end()) {
                     info.extensions.set(it->second, true);
                 }
             }

             MarkPromotedExtensions(&info.extensions, info.properties.apiVersion);
             info.extensions = EnsureDependencies(info.extensions, globalInfo.extensions,
                                                  info.properties.apiVersion);
         }

         // Gather general and extension features and properties
         //
         // Use vkGetPhysicalDevice{Features,Properties}2 if required to gather information about
         // the extensions. DeviceExt::GetPhysicalDeviceProperties2 is guaranteed to be available
         // because these extensions (transitively) depend on it in `EnsureDependencies`
         VkPhysicalDeviceFeatures2 features2 = {};
         features2.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_FEATURES_2;
         PNextChainBuilder featuresChain(&features2);

         VkPhysicalDeviceProperties2 properties2 = {};
         properties2.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_PROPERTIES_2;
         PNextChainBuilder propertiesChain(&properties2);

         if (info.extensions[DeviceExt::ShaderFloat16Int8]) {
             featuresChain.Add(&info.shaderFloat16Int8Features,
                               VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SHADER_FLOAT16_INT8_FEATURES_KHR);
         }

         if (info.extensions[DeviceExt::_16BitStorage]) {
             featuresChain.Add(&info._16BitStorageFeatures,
                               VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_16BIT_STORAGE_FEATURES);
         }

         if (info.extensions[DeviceExt::SubgroupSizeControl]) {
             featuresChain.Add(&info.subgroupSizeControlFeatures,
                               VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SUBGROUP_SIZE_CONTROL_FEATURES_EXT);
             propertiesChain.Add(
                 &info.subgroupSizeControlProperties,
                 VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SUBGROUP_SIZE_CONTROL_PROPERTIES_EXT);
         }

         if (info.extensions[DeviceExt::DriverProperties]) {
             propertiesChain.Add(&info.driverProperties,
                                 VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_DRIVER_PROPERTIES);
         }

         // If we have DeviceExt::GetPhysicalDeviceProperties2, use features2 and properties2 so
         // that features no covered by VkPhysicalDevice{Features,Properties} can be queried.
         //
         // Note that info.properties has already been filled at the start of this function to get
         // `apiVersion`.
         ASSERT(info.properties.apiVersion != 0);
         if (info.extensions[DeviceExt::GetPhysicalDeviceProperties2]) {
             vkFunctions.GetPhysicalDeviceProperties2(physicalDevice, &properties2);
             vkFunctions.GetPhysicalDeviceFeatures2(physicalDevice, &features2);
             info.features = features2.features;
         } else {
             ASSERT(features2.pNext == nullptr && properties2.pNext == nullptr);
             vkFunctions.GetPhysicalDeviceFeatures(physicalDevice, &info.features);
         }

         // TODO(cwallez@chromium.org): gather info about formats

         return std::move(info);
     }

     ResultOrError<VulkanSurfaceInfo> GatherSurfaceInfo(const Adapter& adapter,
                                                        VkSurfaceKHR surface) {
         VulkanSurfaceInfo info = {};

         VkPhysicalDevice physicalDevice = adapter.GetPhysicalDevice();
         const VulkanFunctions& vkFunctions = adapter.GetBackend()->GetFunctions();

         // Get the surface capabilities
         DAWN_TRY(CheckVkSuccess(vkFunctions.GetPhysicalDeviceSurfaceCapabilitiesKHR(
                                     physicalDevice, surface, &info.capabilities),
                                 "vkGetPhysicalDeviceSurfaceCapabilitiesKHR"));

         // Query which queue families support presenting this surface
         {
             size_t nQueueFamilies = adapter.GetDeviceInfo().queueFamilies.size();
             info.supportedQueueFamilies.resize(nQueueFamilies, false);

             for (uint32_t i = 0; i < nQueueFamilies; ++i) {
                 VkBool32 supported = VK_FALSE;
                 DAWN_TRY(CheckVkSuccess(vkFunctions.GetPhysicalDeviceSurfaceSupportKHR(
                                             physicalDevice, i, surface, &supported),
                                         "vkGetPhysicalDeviceSurfaceSupportKHR"));

                 info.supportedQueueFamilies[i] = (supported == VK_TRUE);
             }
         }

         // Gather supported formats
         {
             uint32_t count = 0;
             VkResult result = VkResult::WrapUnsafe(vkFunctions.GetPhysicalDeviceSurfaceFormatsKHR(
                 physicalDevice, surface, &count, nullptr));
             if (result != VK_SUCCESS && result != VK_INCOMPLETE) {
                 return DAWN_INTERNAL_ERROR("vkGetPhysicalDeviceSurfaceFormatsKHR");
             }

             info.formats.resize(count);
             DAWN_TRY(CheckVkSuccess(vkFunctions.GetPhysicalDeviceSurfaceFormatsKHR(
                                         physicalDevice, surface, &count, info.formats.data()),
                                     "vkGetPhysicalDeviceSurfaceFormatsKHR"));
         }

         // Gather supported presents modes
         {
             uint32_t count = 0;
             VkResult result =
                 VkResult::WrapUnsafe(vkFunctions.GetPhysicalDeviceSurfacePresentModesKHR(
                     physicalDevice, surface, &count, nullptr));
             if (result != VK_SUCCESS && result != VK_INCOMPLETE) {
                 return DAWN_INTERNAL_ERROR("vkGetPhysicalDeviceSurfacePresentModesKHR");
             }

             info.presentModes.resize(count);
             DAWN_TRY(CheckVkSuccess(vkFunctions.GetPhysicalDeviceSurfacePresentModesKHR(
                                         physicalDevice, surface, &count, info.presentModes.data()),
                                     "vkGetPhysicalDeviceSurfacePresentModesKHR"));
         }

         return std::move(info);
     }

 }}  // namespace dawn_native::vulkan
	// Copyright 2017 The Dawn Authors
	//
	// Licensed under the Apache License, Version 2.0 (the "License");
	// you may not use this file except in compliance with the License.
	// You may obtain a copy of the License at
	//
	// http://www.apache.org/licenses/LICENSE-2.0
	//
	// Unless required by applicable law or agreed to in writing, software
	// distributed under the License is distributed on an "AS IS" BASIS,
	// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	// See the License for the specific language governing permissions and
	// limitations under the License.

	#include "dawn_native/vulkan/VulkanInfo.h"

	#include "dawn_native/vulkan/AdapterVk.h"
	#include "dawn_native/vulkan/BackendVk.h"
	#include "dawn_native/vulkan/UtilsVulkan.h"
	#include "dawn_native/vulkan/VulkanError.h"

	#include <cstring>

	namespace dawn_native { namespace vulkan {

	namespace {
	ResultOrError<InstanceExtSet> GatherInstanceExtensions(
	const char* layerName,
	const dawn_native::vulkan::VulkanFunctions& vkFunctions,
	const std::unordered_map<std::string, InstanceExt>& knownExts) {
	uint32_t count = 0;
	VkResult vkResult = VkResult::WrapUnsafe(
	vkFunctions.EnumerateInstanceExtensionProperties(layerName, &count, nullptr));
	if (vkResult != VK_SUCCESS && vkResult != VK_INCOMPLETE) {
	return DAWN_INTERNAL_ERROR("vkEnumerateInstanceExtensionProperties");
	}

	std::vector<VkExtensionProperties> extensions(count);
	DAWN_TRY(CheckVkSuccess(vkFunctions.EnumerateInstanceExtensionProperties(
	layerName, &count, extensions.data()),
	"vkEnumerateInstanceExtensionProperties"));

	InstanceExtSet result;
	for (const VkExtensionProperties& extension : extensions) {
	auto it = knownExts.find(extension.extensionName);
	if (it != knownExts.end()) {
	result.set(it->second, true);
	}
	}

	return result;
	}

	} // namespace

	bool VulkanGlobalKnobs::HasExt(InstanceExt ext) const {
	return extensions[ext];
	}

	bool VulkanDeviceKnobs::HasExt(DeviceExt ext) const {
	return extensions[ext];
	}

	ResultOrError<VulkanGlobalInfo> GatherGlobalInfo(const Backend& backend) {
	VulkanGlobalInfo info = {};
	const VulkanFunctions& vkFunctions = backend.GetFunctions();

	// Gather info on available API version
	{
	info.apiVersion = VK_MAKE_VERSION(1, 0, 0);
	if (vkFunctions.EnumerateInstanceVersion != nullptr) {
	DAWN_TRY(CheckVkSuccess(vkFunctions.EnumerateInstanceVersion(&info.apiVersion),
	"vkEnumerateInstanceVersion"));
	}
	}

	// Gather the info about the instance layers
	{
	uint32_t count = 0;
	VkResult result =
	VkResult::WrapUnsafe(vkFunctions.EnumerateInstanceLayerProperties(&count, nullptr));
	// From the Vulkan spec result should be success if there are 0 layers,
	// incomplete otherwise. This means that both values represent a success.
	// This is the same for all Enumarte functions
	if (result != VK_SUCCESS && result != VK_INCOMPLETE) {
	return DAWN_INTERNAL_ERROR("vkEnumerateInstanceLayerProperties");
	}

	std::vector<VkLayerProperties> layersProperties(count);
	DAWN_TRY(CheckVkSuccess(
	vkFunctions.EnumerateInstanceLayerProperties(&count, layersProperties.data()),
	"vkEnumerateInstanceLayerProperties"));

	std::unordered_map<std::string, VulkanLayer> knownLayers = CreateVulkanLayerNameMap();
	for (const VkLayerProperties& layer : layersProperties) {
	auto it = knownLayers.find(layer.layerName);
	if (it != knownLayers.end()) {
	info.layers.set(it->second, true);
	}
	}
	}

	// Gather the info about the instance extensions
	{
	std::unordered_map<std::string, InstanceExt> knownExts = CreateInstanceExtNameMap();

	DAWN_TRY_ASSIGN(info.extensions,
	GatherInstanceExtensions(nullptr, vkFunctions, knownExts));
	MarkPromotedExtensions(&info.extensions, info.apiVersion);
	info.extensions = EnsureDependencies(info.extensions);

	for (VulkanLayer layer : IterateBitSet(info.layers)) {
	DAWN_TRY_ASSIGN(info.layerExtensions[layer],
	GatherInstanceExtensions(GetVulkanLayerInfo(layer).name,
	vkFunctions, knownExts));
	MarkPromotedExtensions(&info.layerExtensions[layer], info.apiVersion);
	info.layerExtensions[layer] = EnsureDependencies(info.layerExtensions[layer]);
	}
	}

	return std::move(info);
	}

	ResultOrError<std::vector<VkPhysicalDevice>> GetPhysicalDevices(const Backend& backend) {
	VkInstance instance = backend.GetVkInstance();
	const VulkanFunctions& vkFunctions = backend.GetFunctions();

	uint32_t count = 0;
	VkResult result =
	VkResult::WrapUnsafe(vkFunctions.EnumeratePhysicalDevices(instance, &count, nullptr));
	if (result != VK_SUCCESS && result != VK_INCOMPLETE) {
	return DAWN_INTERNAL_ERROR("vkEnumeratePhysicalDevices");
	}

	std::vector<VkPhysicalDevice> physicalDevices(count);
	DAWN_TRY(CheckVkSuccess(
	vkFunctions.EnumeratePhysicalDevices(instance, &count, physicalDevices.data()),
	"vkEnumeratePhysicalDevices"));

	return std::move(physicalDevices);
	}

	ResultOrError<VulkanDeviceInfo> GatherDeviceInfo(const Adapter& adapter) {
	VulkanDeviceInfo info = {};
	VkPhysicalDevice physicalDevice = adapter.GetPhysicalDevice();
	const VulkanGlobalInfo& globalInfo = adapter.GetBackend()->GetGlobalInfo();
	const VulkanFunctions& vkFunctions = adapter.GetBackend()->GetFunctions();

	// Query the device properties first to get the ICD's `apiVersion`
	vkFunctions.GetPhysicalDeviceProperties(physicalDevice, &info.properties);

	// Gather info about device memory.
	{
	VkPhysicalDeviceMemoryProperties memory;
	vkFunctions.GetPhysicalDeviceMemoryProperties(physicalDevice, &memory);

	info.memoryTypes.assign(memory.memoryTypes,
	memory.memoryTypes + memory.memoryTypeCount);
	info.memoryHeaps.assign(memory.memoryHeaps,
	memory.memoryHeaps + memory.memoryHeapCount);
	}

	// Gather info about device queue families
	{
	uint32_t count = 0;
	vkFunctions.GetPhysicalDeviceQueueFamilyProperties(physicalDevice, &count, nullptr);

	info.queueFamilies.resize(count);
	vkFunctions.GetPhysicalDeviceQueueFamilyProperties(physicalDevice, &count,
	info.queueFamilies.data());
	}

	// Gather the info about the device layers
	{
	uint32_t count = 0;
	VkResult result = VkResult::WrapUnsafe(
	vkFunctions.EnumerateDeviceLayerProperties(physicalDevice, &count, nullptr));
	if (result != VK_SUCCESS && result != VK_INCOMPLETE) {
	return DAWN_INTERNAL_ERROR("vkEnumerateDeviceLayerProperties");
	}

	info.layers.resize(count);
	DAWN_TRY(CheckVkSuccess(vkFunctions.EnumerateDeviceLayerProperties(
	physicalDevice, &count, info.layers.data()),
	"vkEnumerateDeviceLayerProperties"));
	}

	// Gather the info about the device extensions
	{
	uint32_t count = 0;
	VkResult result = VkResult::WrapUnsafe(vkFunctions.EnumerateDeviceExtensionProperties(
	physicalDevice, nullptr, &count, nullptr));
	if (result != VK_SUCCESS && result != VK_INCOMPLETE) {
	return DAWN_INTERNAL_ERROR("vkEnumerateDeviceExtensionProperties");
	}

	std::vector<VkExtensionProperties> extensionsProperties;
	extensionsProperties.resize(count);
	DAWN_TRY(
	CheckVkSuccess(vkFunctions.EnumerateDeviceExtensionProperties(
	physicalDevice, nullptr, &count, extensionsProperties.data()),
	"vkEnumerateDeviceExtensionProperties"));

	std::unordered_map<std::string, DeviceExt> knownExts = CreateDeviceExtNameMap();

	for (const VkExtensionProperties& extension : extensionsProperties) {
	auto it = knownExts.find(extension.extensionName);
	if (it != knownExts.end()) {
	info.extensions.set(it->second, true);
	}
	}

	MarkPromotedExtensions(&info.extensions, info.properties.apiVersion);
	info.extensions = EnsureDependencies(info.extensions, globalInfo.extensions,
	info.properties.apiVersion);
	}

	// Gather general and extension features and properties
	//
	// Use vkGetPhysicalDevice{Features,Properties}2 if required to gather information about
	// the extensions. DeviceExt::GetPhysicalDeviceProperties2 is guaranteed to be available
	// because these extensions (transitively) depend on it in `EnsureDependencies`
	VkPhysicalDeviceFeatures2 features2 = {};
	features2.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_FEATURES_2;
	PNextChainBuilder featuresChain(&features2);

	VkPhysicalDeviceProperties2 properties2 = {};
	properties2.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_PROPERTIES_2;
	PNextChainBuilder propertiesChain(&properties2);

	if (info.extensions[DeviceExt::ShaderFloat16Int8]) {
	featuresChain.Add(&info.shaderFloat16Int8Features,
	VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SHADER_FLOAT16_INT8_FEATURES_KHR);
	}

	if (info.extensions[DeviceExt::_16BitStorage]) {
	featuresChain.Add(&info._16BitStorageFeatures,
	VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_16BIT_STORAGE_FEATURES);
	}

	if (info.extensions[DeviceExt::SubgroupSizeControl]) {
	featuresChain.Add(&info.subgroupSizeControlFeatures,
	VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SUBGROUP_SIZE_CONTROL_FEATURES_EXT);
	propertiesChain.Add(
	&info.subgroupSizeControlProperties,
	VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SUBGROUP_SIZE_CONTROL_PROPERTIES_EXT);
	}

	if (info.extensions[DeviceExt::DriverProperties]) {
	propertiesChain.Add(&info.driverProperties,
	VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_DRIVER_PROPERTIES);
	}

	// If we have DeviceExt::GetPhysicalDeviceProperties2, use features2 and properties2 so
	// that features no covered by VkPhysicalDevice{Features,Properties} can be queried.
	//
	// Note that info.properties has already been filled at the start of this function to get
	// `apiVersion`.
	ASSERT(info.properties.apiVersion != 0);
	if (info.extensions[DeviceExt::GetPhysicalDeviceProperties2]) {
	vkFunctions.GetPhysicalDeviceProperties2(physicalDevice, &properties2);
	vkFunctions.GetPhysicalDeviceFeatures2(physicalDevice, &features2);
	info.features = features2.features;
	} else {
	ASSERT(features2.pNext == nullptr && properties2.pNext == nullptr);
	vkFunctions.GetPhysicalDeviceFeatures(physicalDevice, &info.features);
	}

	// TODO(cwallez@chromium.org): gather info about formats

	return std::move(info);
	}

	ResultOrError<VulkanSurfaceInfo> GatherSurfaceInfo(const Adapter& adapter,
	VkSurfaceKHR surface) {
	VulkanSurfaceInfo info = {};

	VkPhysicalDevice physicalDevice = adapter.GetPhysicalDevice();
	const VulkanFunctions& vkFunctions = adapter.GetBackend()->GetFunctions();

	// Get the surface capabilities
	DAWN_TRY(CheckVkSuccess(vkFunctions.GetPhysicalDeviceSurfaceCapabilitiesKHR(
	physicalDevice, surface, &info.capabilities),
	"vkGetPhysicalDeviceSurfaceCapabilitiesKHR"));

	// Query which queue families support presenting this surface
	{
	size_t nQueueFamilies = adapter.GetDeviceInfo().queueFamilies.size();
	info.supportedQueueFamilies.resize(nQueueFamilies, false);

	for (uint32_t i = 0; i < nQueueFamilies; ++i) {
	VkBool32 supported = VK_FALSE;
	DAWN_TRY(CheckVkSuccess(vkFunctions.GetPhysicalDeviceSurfaceSupportKHR(
	physicalDevice, i, surface, &supported),
	"vkGetPhysicalDeviceSurfaceSupportKHR"));

	info.supportedQueueFamilies[i] = (supported == VK_TRUE);
	}
	}

	// Gather supported formats
	{
	uint32_t count = 0;
	VkResult result = VkResult::WrapUnsafe(vkFunctions.GetPhysicalDeviceSurfaceFormatsKHR(
	physicalDevice, surface, &count, nullptr));
	if (result != VK_SUCCESS && result != VK_INCOMPLETE) {
	return DAWN_INTERNAL_ERROR("vkGetPhysicalDeviceSurfaceFormatsKHR");
	}

	info.formats.resize(count);
	DAWN_TRY(CheckVkSuccess(vkFunctions.GetPhysicalDeviceSurfaceFormatsKHR(
	physicalDevice, surface, &count, info.formats.data()),
	"vkGetPhysicalDeviceSurfaceFormatsKHR"));
	}

	// Gather supported presents modes
	{
	uint32_t count = 0;
	VkResult result =
	VkResult::WrapUnsafe(vkFunctions.GetPhysicalDeviceSurfacePresentModesKHR(
	physicalDevice, surface, &count, nullptr));
	if (result != VK_SUCCESS && result != VK_INCOMPLETE) {
	return DAWN_INTERNAL_ERROR("vkGetPhysicalDeviceSurfacePresentModesKHR");
	}

	info.presentModes.resize(count);
	DAWN_TRY(CheckVkSuccess(vkFunctions.GetPhysicalDeviceSurfacePresentModesKHR(
	physicalDevice, surface, &count, info.presentModes.data()),
	"vkGetPhysicalDeviceSurfacePresentModesKHR"));
	}

	return std::move(info);
	}

	}} // namespace dawn_native::vulkan