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 "common/Log.h"
 #include "dawn_native/vulkan/AdapterVk.h"
 #include "dawn_native/vulkan/BackendVk.h"
 #include "dawn_native/vulkan/VulkanError.h"

 #include <cstring>

 namespace dawn_native { namespace vulkan {

     namespace {
         bool IsLayerName(const VkLayerProperties& layer, const char* name) {
             return strncmp(layer.layerName, name, VK_MAX_EXTENSION_NAME_SIZE) == 0;
         }

         bool EnumerateInstanceExtensions(const char* layerName,
                                          const dawn_native::vulkan::VulkanFunctions& vkFunctions,
                                          std::vector<VkExtensionProperties>* extensions) {
             uint32_t count = 0;
             VkResult result = VkResult::WrapUnsafe(
                 vkFunctions.EnumerateInstanceExtensionProperties(layerName, &count, nullptr));
             if (result != VK_SUCCESS && result != VK_INCOMPLETE) {
                 return false;
             }
             extensions->resize(count);
             result = VkResult::WrapUnsafe(vkFunctions.EnumerateInstanceExtensionProperties(
                 layerName, &count, extensions->data()));
             return (result == VK_SUCCESS);
         }

     }  // namespace

     const char kLayerNameKhronosValidation[] = "VK_LAYER_KHRONOS_validation";
     const char kLayerNameLunargVKTrace[] = "VK_LAYER_LUNARG_vktrace";
     const char kLayerNameRenderDocCapture[] = "VK_LAYER_RENDERDOC_Capture";
     const char kLayerNameFuchsiaImagePipeSwapchain[] = "VK_LAYER_FUCHSIA_imagepipe_swapchain";

     bool VulkanGlobalKnobs::HasExt(InstanceExt ext) const {
         return extensions.Has(ext);
     }

     bool VulkanDeviceKnobs::HasExt(DeviceExt ext) const {
         return extensions.Has(ext);
     }

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

         // Gather info on available API version
         {
             uint32_t supportedAPIVersion = VK_MAKE_VERSION(1, 0, 0);
             if (vkFunctions.EnumerateInstanceVersion) {
                 vkFunctions.EnumerateInstanceVersion(&supportedAPIVersion);
             }

             // Use Vulkan 1.1 if it's available.
             info.apiVersion = (supportedAPIVersion >= VK_MAKE_VERSION(1, 1, 0))
                                   ? VK_MAKE_VERSION(1, 1, 0)
                                   : VK_MAKE_VERSION(1, 0, 0);
         }

         // 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");
             }

             info.layers.resize(count);
             DAWN_TRY(CheckVkSuccess(
                 vkFunctions.EnumerateInstanceLayerProperties(&count, info.layers.data()),
                 "vkEnumerateInstanceLayerProperties"));

             for (const auto& layer : info.layers) {
                 if (IsLayerName(layer, kLayerNameKhronosValidation)) {
                     info.validation = true;
                 }
                 if (IsLayerName(layer, kLayerNameLunargVKTrace)) {
                     info.vktrace = true;
                 }
                 if (IsLayerName(layer, kLayerNameRenderDocCapture)) {
                     info.renderDocCapture = true;
                 }
                 // Technical note: Fuchsia implements the swapchain through
                 // a layer (VK_LAYER_FUCHSIA_image_pipe_swapchain), which adds
                 // an instance extensions (VK_FUCHSIA_image_surface) to all ICDs.
                 if (IsLayerName(layer, kLayerNameFuchsiaImagePipeSwapchain)) {
                     info.fuchsiaImagePipeSwapchain = true;
                 }
             }
         }

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

             std::vector<VkExtensionProperties> extensionsProperties;
             if (!EnumerateInstanceExtensions(nullptr, vkFunctions, &extensionsProperties)) {
                 return DAWN_INTERNAL_ERROR("vkEnumerateInstanceExtensionProperties");
             }

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

             // Specific handling for the Fuchsia swapchain surface creation extension
             // which is normally part of the Fuchsia-specific swapchain layer.
             if (info.fuchsiaImagePipeSwapchain &&
                 !info.HasExt(InstanceExt::FuchsiaImagePipeSurface)) {
                 if (!EnumerateInstanceExtensions(kLayerNameFuchsiaImagePipeSwapchain, vkFunctions,
                                                  &extensionsProperties)) {
                     return DAWN_INTERNAL_ERROR("vkEnumerateInstanceExtensionProperties");
                 }

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

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

         // TODO(cwallez@chromium:org): Each layer can expose additional extensions, query them?

         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();

         // Gather general info about the device
         vkFunctions.GetPhysicalDeviceProperties(physicalDevice, &info.properties);
         vkFunctions.GetPhysicalDeviceFeatures(physicalDevice, &info.features);

         // 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);
         }

         // Gather additional information for some of the extensions
         {
             if (info.extensions.Has(DeviceExt::ShaderFloat16Int8)) {
                 info.shaderFloat16Int8Features.sType =
                     VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SHADER_FLOAT16_INT8_FEATURES_KHR;

                 VkPhysicalDeviceFeatures2KHR physicalDeviceFeatures2 = {};
                 physicalDeviceFeatures2.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_FEATURES_2_KHR;
                 physicalDeviceFeatures2.pNext = &info.shaderFloat16Int8Features;
                 vkFunctions.GetPhysicalDeviceFeatures2(physicalDevice, &physicalDeviceFeatures2);
             }

             if (info.extensions.Has(DeviceExt::_16BitStorage)) {
                 info._16BitStorageFeatures.sType =
                     VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_16BIT_STORAGE_FEATURES;

                 VkPhysicalDeviceFeatures2 physicalDeviceFeatures2 = {};
                 physicalDeviceFeatures2.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_FEATURES_2;
                 physicalDeviceFeatures2.pNext = &info._16BitStorageFeatures;
                 vkFunctions.GetPhysicalDeviceFeatures2(physicalDevice, &physicalDeviceFeatures2);
             }
         }

         // 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 "common/Log.h"
	#include "dawn_native/vulkan/AdapterVk.h"
	#include "dawn_native/vulkan/BackendVk.h"
	#include "dawn_native/vulkan/VulkanError.h"

	#include <cstring>

	namespace dawn_native { namespace vulkan {

	namespace {
	bool IsLayerName(const VkLayerProperties& layer, const char* name) {
	return strncmp(layer.layerName, name, VK_MAX_EXTENSION_NAME_SIZE) == 0;
	}

	bool EnumerateInstanceExtensions(const char* layerName,
	const dawn_native::vulkan::VulkanFunctions& vkFunctions,
	std::vector<VkExtensionProperties>* extensions) {
	uint32_t count = 0;
	VkResult result = VkResult::WrapUnsafe(
	vkFunctions.EnumerateInstanceExtensionProperties(layerName, &count, nullptr));
	if (result != VK_SUCCESS && result != VK_INCOMPLETE) {
	return false;
	}
	extensions->resize(count);
	result = VkResult::WrapUnsafe(vkFunctions.EnumerateInstanceExtensionProperties(
	layerName, &count, extensions->data()));
	return (result == VK_SUCCESS);
	}

	} // namespace

	const char kLayerNameKhronosValidation[] = "VK_LAYER_KHRONOS_validation";
	const char kLayerNameLunargVKTrace[] = "VK_LAYER_LUNARG_vktrace";
	const char kLayerNameRenderDocCapture[] = "VK_LAYER_RENDERDOC_Capture";
	const char kLayerNameFuchsiaImagePipeSwapchain[] = "VK_LAYER_FUCHSIA_imagepipe_swapchain";

	bool VulkanGlobalKnobs::HasExt(InstanceExt ext) const {
	return extensions.Has(ext);
	}

	bool VulkanDeviceKnobs::HasExt(DeviceExt ext) const {
	return extensions.Has(ext);
	}

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

	// Gather info on available API version
	{
	uint32_t supportedAPIVersion = VK_MAKE_VERSION(1, 0, 0);
	if (vkFunctions.EnumerateInstanceVersion) {
	vkFunctions.EnumerateInstanceVersion(&supportedAPIVersion);
	}

	// Use Vulkan 1.1 if it's available.
	info.apiVersion = (supportedAPIVersion >= VK_MAKE_VERSION(1, 1, 0))
	? VK_MAKE_VERSION(1, 1, 0)
	: VK_MAKE_VERSION(1, 0, 0);
	}

	// 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");
	}

	info.layers.resize(count);
	DAWN_TRY(CheckVkSuccess(
	vkFunctions.EnumerateInstanceLayerProperties(&count, info.layers.data()),
	"vkEnumerateInstanceLayerProperties"));

	for (const auto& layer : info.layers) {
	if (IsLayerName(layer, kLayerNameKhronosValidation)) {
	info.validation = true;
	}
	if (IsLayerName(layer, kLayerNameLunargVKTrace)) {
	info.vktrace = true;
	}
	if (IsLayerName(layer, kLayerNameRenderDocCapture)) {
	info.renderDocCapture = true;
	}
	// Technical note: Fuchsia implements the swapchain through
	// a layer (VK_LAYER_FUCHSIA_image_pipe_swapchain), which adds
	// an instance extensions (VK_FUCHSIA_image_surface) to all ICDs.
	if (IsLayerName(layer, kLayerNameFuchsiaImagePipeSwapchain)) {
	info.fuchsiaImagePipeSwapchain = true;
	}
	}
	}

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

	std::vector<VkExtensionProperties> extensionsProperties;
	if (!EnumerateInstanceExtensions(nullptr, vkFunctions, &extensionsProperties)) {
	return DAWN_INTERNAL_ERROR("vkEnumerateInstanceExtensionProperties");
	}

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

	// Specific handling for the Fuchsia swapchain surface creation extension
	// which is normally part of the Fuchsia-specific swapchain layer.
	if (info.fuchsiaImagePipeSwapchain &&
	!info.HasExt(InstanceExt::FuchsiaImagePipeSurface)) {
	if (!EnumerateInstanceExtensions(kLayerNameFuchsiaImagePipeSwapchain, vkFunctions,
	&extensionsProperties)) {
	return DAWN_INTERNAL_ERROR("vkEnumerateInstanceExtensionProperties");
	}

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

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

	// TODO(cwallez@chromium:org): Each layer can expose additional extensions, query them?

	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();

	// Gather general info about the device
	vkFunctions.GetPhysicalDeviceProperties(physicalDevice, &info.properties);
	vkFunctions.GetPhysicalDeviceFeatures(physicalDevice, &info.features);

	// 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);
	}

	// Gather additional information for some of the extensions
	{
	if (info.extensions.Has(DeviceExt::ShaderFloat16Int8)) {
	info.shaderFloat16Int8Features.sType =
	VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SHADER_FLOAT16_INT8_FEATURES_KHR;

	VkPhysicalDeviceFeatures2KHR physicalDeviceFeatures2 = {};
	physicalDeviceFeatures2.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_FEATURES_2_KHR;
	physicalDeviceFeatures2.pNext = &info.shaderFloat16Int8Features;
	vkFunctions.GetPhysicalDeviceFeatures2(physicalDevice, &physicalDeviceFeatures2);
	}

	if (info.extensions.Has(DeviceExt::_16BitStorage)) {
	info._16BitStorageFeatures.sType =
	VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_16BIT_STORAGE_FEATURES;

	VkPhysicalDeviceFeatures2 physicalDeviceFeatures2 = {};
	physicalDeviceFeatures2.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_FEATURES_2;
	physicalDeviceFeatures2.pNext = &info._16BitStorageFeatures;
	vkFunctions.GetPhysicalDeviceFeatures2(physicalDevice, &physicalDeviceFeatures2);
	}
	}

	// 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