| // 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/DeviceVk.h" |
| |
| #include "common/Platform.h" |
| #include "dawn_native/BackendConnection.h" |
| #include "dawn_native/ChainUtils_autogen.h" |
| #include "dawn_native/Error.h" |
| #include "dawn_native/ErrorData.h" |
| #include "dawn_native/VulkanBackend.h" |
| #include "dawn_native/vulkan/AdapterVk.h" |
| #include "dawn_native/vulkan/BackendVk.h" |
| #include "dawn_native/vulkan/BindGroupLayoutVk.h" |
| #include "dawn_native/vulkan/BindGroupVk.h" |
| #include "dawn_native/vulkan/BufferVk.h" |
| #include "dawn_native/vulkan/CommandBufferVk.h" |
| #include "dawn_native/vulkan/ComputePipelineVk.h" |
| #include "dawn_native/vulkan/FencedDeleter.h" |
| #include "dawn_native/vulkan/PipelineLayoutVk.h" |
| #include "dawn_native/vulkan/QuerySetVk.h" |
| #include "dawn_native/vulkan/QueueVk.h" |
| #include "dawn_native/vulkan/RenderPassCache.h" |
| #include "dawn_native/vulkan/RenderPipelineVk.h" |
| #include "dawn_native/vulkan/ResourceMemoryAllocatorVk.h" |
| #include "dawn_native/vulkan/SamplerVk.h" |
| #include "dawn_native/vulkan/ShaderModuleVk.h" |
| #include "dawn_native/vulkan/StagingBufferVk.h" |
| #include "dawn_native/vulkan/SwapChainVk.h" |
| #include "dawn_native/vulkan/TextureVk.h" |
| #include "dawn_native/vulkan/UtilsVulkan.h" |
| #include "dawn_native/vulkan/VulkanError.h" |
| |
| namespace dawn_native { namespace vulkan { |
| |
| // static |
| ResultOrError<Device*> Device::Create(Adapter* adapter, const DeviceDescriptor* descriptor) { |
| Ref<Device> device = AcquireRef(new Device(adapter, descriptor)); |
| DAWN_TRY(device->Initialize()); |
| return device.Detach(); |
| } |
| |
| Device::Device(Adapter* adapter, const DeviceDescriptor* descriptor) |
| : DeviceBase(adapter, descriptor) { |
| InitTogglesFromDriver(); |
| } |
| |
| MaybeError Device::Initialize() { |
| // Copy the adapter's device info to the device so that we can change the "knobs" |
| mDeviceInfo = ToBackend(GetAdapter())->GetDeviceInfo(); |
| |
| // Initialize the "instance" procs of our local function table. |
| VulkanFunctions* functions = GetMutableFunctions(); |
| *functions = ToBackend(GetAdapter())->GetBackend()->GetFunctions(); |
| |
| // Two things are crucial if device initialization fails: the function pointers to destroy |
| // objects, and the fence deleter that calls these functions. Do not do anything before |
| // these two are set up, so that a failed initialization doesn't cause a crash in |
| // ShutDownImpl() |
| { |
| VkPhysicalDevice physicalDevice = ToBackend(GetAdapter())->GetPhysicalDevice(); |
| |
| VulkanDeviceKnobs usedDeviceKnobs = {}; |
| DAWN_TRY_ASSIGN(usedDeviceKnobs, CreateDevice(physicalDevice)); |
| *static_cast<VulkanDeviceKnobs*>(&mDeviceInfo) = usedDeviceKnobs; |
| |
| DAWN_TRY(functions->LoadDeviceProcs(mVkDevice, mDeviceInfo)); |
| |
| // The queue can be loaded before the fenced deleter because their lifetime is tied to |
| // the device. |
| GatherQueueFromDevice(); |
| |
| mDeleter = std::make_unique<FencedDeleter>(this); |
| } |
| |
| mRenderPassCache = std::make_unique<RenderPassCache>(this); |
| mResourceMemoryAllocator = std::make_unique<ResourceMemoryAllocator>(this); |
| |
| mExternalMemoryService = std::make_unique<external_memory::Service>(this); |
| mExternalSemaphoreService = std::make_unique<external_semaphore::Service>(this); |
| |
| DAWN_TRY(PrepareRecordingContext()); |
| |
| // The environment can request to use D32S8 or D24S8 when it's not available. Override |
| // the decision if it is not applicable. |
| ApplyDepth24PlusS8Toggle(); |
| |
| return DeviceBase::Initialize(Queue::Create(this)); |
| } |
| |
| Device::~Device() { |
| ShutDownBase(); |
| } |
| |
| ResultOrError<Ref<BindGroupBase>> Device::CreateBindGroupImpl( |
| const BindGroupDescriptor* descriptor) { |
| return BindGroup::Create(this, descriptor); |
| } |
| ResultOrError<Ref<BindGroupLayoutBase>> Device::CreateBindGroupLayoutImpl( |
| const BindGroupLayoutDescriptor* descriptor, |
| PipelineCompatibilityToken pipelineCompatibilityToken) { |
| return BindGroupLayout::Create(this, descriptor, pipelineCompatibilityToken); |
| } |
| ResultOrError<Ref<BufferBase>> Device::CreateBufferImpl(const BufferDescriptor* descriptor) { |
| return Buffer::Create(this, descriptor); |
| } |
| ResultOrError<Ref<CommandBufferBase>> Device::CreateCommandBuffer( |
| CommandEncoder* encoder, |
| const CommandBufferDescriptor* descriptor) { |
| return CommandBuffer::Create(encoder, descriptor); |
| } |
| ResultOrError<Ref<ComputePipelineBase>> Device::CreateComputePipelineImpl( |
| const ComputePipelineDescriptor* descriptor) { |
| return ComputePipeline::Create(this, descriptor); |
| } |
| ResultOrError<Ref<PipelineLayoutBase>> Device::CreatePipelineLayoutImpl( |
| const PipelineLayoutDescriptor* descriptor) { |
| return PipelineLayout::Create(this, descriptor); |
| } |
| ResultOrError<Ref<QuerySetBase>> Device::CreateQuerySetImpl( |
| const QuerySetDescriptor* descriptor) { |
| return QuerySet::Create(this, descriptor); |
| } |
| ResultOrError<Ref<RenderPipelineBase>> Device::CreateRenderPipelineImpl( |
| const RenderPipelineDescriptor* descriptor) { |
| return RenderPipeline::Create(this, descriptor); |
| } |
| ResultOrError<Ref<SamplerBase>> Device::CreateSamplerImpl(const SamplerDescriptor* descriptor) { |
| return Sampler::Create(this, descriptor); |
| } |
| ResultOrError<Ref<ShaderModuleBase>> Device::CreateShaderModuleImpl( |
| const ShaderModuleDescriptor* descriptor, |
| ShaderModuleParseResult* parseResult) { |
| return ShaderModule::Create(this, descriptor, parseResult); |
| } |
| ResultOrError<Ref<SwapChainBase>> Device::CreateSwapChainImpl( |
| const SwapChainDescriptor* descriptor) { |
| return OldSwapChain::Create(this, descriptor); |
| } |
| ResultOrError<Ref<NewSwapChainBase>> Device::CreateSwapChainImpl( |
| Surface* surface, |
| NewSwapChainBase* previousSwapChain, |
| const SwapChainDescriptor* descriptor) { |
| return SwapChain::Create(this, surface, previousSwapChain, descriptor); |
| } |
| ResultOrError<Ref<TextureBase>> Device::CreateTextureImpl(const TextureDescriptor* descriptor) { |
| return Texture::Create(this, descriptor); |
| } |
| ResultOrError<Ref<TextureViewBase>> Device::CreateTextureViewImpl( |
| TextureBase* texture, |
| const TextureViewDescriptor* descriptor) { |
| return TextureView::Create(texture, descriptor); |
| } |
| void Device::CreateComputePipelineAsyncImpl(const ComputePipelineDescriptor* descriptor, |
| size_t blueprintHash, |
| WGPUCreateComputePipelineAsyncCallback callback, |
| void* userdata) { |
| ComputePipeline::CreateAsync(this, descriptor, blueprintHash, callback, userdata); |
| } |
| void Device::CreateRenderPipelineAsyncImpl(const RenderPipelineDescriptor* descriptor, |
| size_t blueprintHash, |
| WGPUCreateRenderPipelineAsyncCallback callback, |
| void* userdata) { |
| RenderPipeline::CreateAsync(this, descriptor, blueprintHash, callback, userdata); |
| } |
| |
| MaybeError Device::TickImpl() { |
| RecycleCompletedCommands(); |
| |
| ExecutionSerial completedSerial = GetCompletedCommandSerial(); |
| |
| for (Ref<BindGroupLayout>& bgl : |
| mBindGroupLayoutsPendingDeallocation.IterateUpTo(completedSerial)) { |
| bgl->FinishDeallocation(completedSerial); |
| } |
| mBindGroupLayoutsPendingDeallocation.ClearUpTo(completedSerial); |
| |
| mResourceMemoryAllocator->Tick(completedSerial); |
| mDeleter->Tick(completedSerial); |
| |
| if (mRecordingContext.used) { |
| DAWN_TRY(SubmitPendingCommands()); |
| } |
| |
| return {}; |
| } |
| |
| VkInstance Device::GetVkInstance() const { |
| return ToBackend(GetAdapter())->GetBackend()->GetVkInstance(); |
| } |
| const VulkanDeviceInfo& Device::GetDeviceInfo() const { |
| return mDeviceInfo; |
| } |
| |
| const VulkanGlobalInfo& Device::GetGlobalInfo() const { |
| return ToBackend(GetAdapter())->GetBackend()->GetGlobalInfo(); |
| } |
| |
| VkDevice Device::GetVkDevice() const { |
| return mVkDevice; |
| } |
| |
| uint32_t Device::GetGraphicsQueueFamily() const { |
| return mQueueFamily; |
| } |
| |
| VkQueue Device::GetQueue() const { |
| return mQueue; |
| } |
| |
| FencedDeleter* Device::GetFencedDeleter() const { |
| return mDeleter.get(); |
| } |
| |
| RenderPassCache* Device::GetRenderPassCache() const { |
| return mRenderPassCache.get(); |
| } |
| |
| ResourceMemoryAllocator* Device::GetResourceMemoryAllocator() const { |
| return mResourceMemoryAllocator.get(); |
| } |
| |
| void Device::EnqueueDeferredDeallocation(BindGroupLayout* bindGroupLayout) { |
| mBindGroupLayoutsPendingDeallocation.Enqueue(bindGroupLayout, GetPendingCommandSerial()); |
| } |
| |
| CommandRecordingContext* Device::GetPendingRecordingContext() { |
| ASSERT(mRecordingContext.commandBuffer != VK_NULL_HANDLE); |
| mRecordingContext.used = true; |
| return &mRecordingContext; |
| } |
| |
| MaybeError Device::SubmitPendingCommands() { |
| if (!mRecordingContext.used) { |
| return {}; |
| } |
| |
| DAWN_TRY(CheckVkSuccess(fn.EndCommandBuffer(mRecordingContext.commandBuffer), |
| "vkEndCommandBuffer")); |
| |
| std::vector<VkPipelineStageFlags> dstStageMasks(mRecordingContext.waitSemaphores.size(), |
| VK_PIPELINE_STAGE_ALL_COMMANDS_BIT); |
| |
| VkSubmitInfo submitInfo; |
| submitInfo.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO; |
| submitInfo.pNext = nullptr; |
| submitInfo.waitSemaphoreCount = |
| static_cast<uint32_t>(mRecordingContext.waitSemaphores.size()); |
| submitInfo.pWaitSemaphores = AsVkArray(mRecordingContext.waitSemaphores.data()); |
| submitInfo.pWaitDstStageMask = dstStageMasks.data(); |
| submitInfo.commandBufferCount = 1; |
| submitInfo.pCommandBuffers = &mRecordingContext.commandBuffer; |
| submitInfo.signalSemaphoreCount = |
| static_cast<uint32_t>(mRecordingContext.signalSemaphores.size()); |
| submitInfo.pSignalSemaphores = AsVkArray(mRecordingContext.signalSemaphores.data()); |
| |
| VkFence fence = VK_NULL_HANDLE; |
| DAWN_TRY_ASSIGN(fence, GetUnusedFence()); |
| DAWN_TRY_WITH_CLEANUP( |
| CheckVkSuccess(fn.QueueSubmit(mQueue, 1, &submitInfo, fence), "vkQueueSubmit"), { |
| // If submitting to the queue fails, move the fence back into the unused fence |
| // list, as if it were never acquired. Not doing so would leak the fence since |
| // it would be neither in the unused list nor in the in-flight list. |
| mUnusedFences.push_back(fence); |
| }); |
| |
| // Enqueue the semaphores before incrementing the serial, so that they can be deleted as |
| // soon as the current submission is finished. |
| for (VkSemaphore semaphore : mRecordingContext.waitSemaphores) { |
| mDeleter->DeleteWhenUnused(semaphore); |
| } |
| for (VkSemaphore semaphore : mRecordingContext.signalSemaphores) { |
| mDeleter->DeleteWhenUnused(semaphore); |
| } |
| |
| IncrementLastSubmittedCommandSerial(); |
| ExecutionSerial lastSubmittedSerial = GetLastSubmittedCommandSerial(); |
| mFencesInFlight.emplace(fence, lastSubmittedSerial); |
| |
| CommandPoolAndBuffer submittedCommands = {mRecordingContext.commandPool, |
| mRecordingContext.commandBuffer}; |
| mCommandsInFlight.Enqueue(submittedCommands, lastSubmittedSerial); |
| mRecordingContext = CommandRecordingContext(); |
| DAWN_TRY(PrepareRecordingContext()); |
| |
| return {}; |
| } |
| |
| ResultOrError<VulkanDeviceKnobs> Device::CreateDevice(VkPhysicalDevice physicalDevice) { |
| VulkanDeviceKnobs usedKnobs = {}; |
| |
| // Default to asking for all avilable known extensions. |
| usedKnobs.extensions = mDeviceInfo.extensions; |
| |
| // However only request the extensions that haven't been promoted in the device's apiVersion |
| std::vector<const char*> extensionNames; |
| for (DeviceExt ext : IterateBitSet(usedKnobs.extensions)) { |
| const DeviceExtInfo& info = GetDeviceExtInfo(ext); |
| |
| if (info.versionPromoted > mDeviceInfo.properties.apiVersion) { |
| extensionNames.push_back(info.name); |
| } |
| } |
| |
| // Some device features can only be enabled using a VkPhysicalDeviceFeatures2 struct, which |
| // is supported by the VK_EXT_get_physical_properties2 instance extension, which was |
| // promoted as a core API in Vulkan 1.1. |
| // |
| // Prepare a VkPhysicalDeviceFeatures2 struct for this use case, it will only be populated |
| // if HasExt(DeviceExt::GetPhysicalDeviceProperties2) is true. |
| VkPhysicalDeviceFeatures2 features2 = {}; |
| features2.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_FEATURES_2; |
| PNextChainBuilder featuresChain(&features2); |
| |
| // Required for core WebGPU features. |
| usedKnobs.features.depthBiasClamp = VK_TRUE; |
| usedKnobs.features.fragmentStoresAndAtomics = VK_TRUE; |
| usedKnobs.features.fullDrawIndexUint32 = VK_TRUE; |
| usedKnobs.features.imageCubeArray = VK_TRUE; |
| usedKnobs.features.independentBlend = VK_TRUE; |
| usedKnobs.features.sampleRateShading = VK_TRUE; |
| |
| if (IsRobustnessEnabled()) { |
| usedKnobs.features.robustBufferAccess = VK_TRUE; |
| } |
| |
| if (mDeviceInfo.HasExt(DeviceExt::SubgroupSizeControl)) { |
| ASSERT(usedKnobs.HasExt(DeviceExt::SubgroupSizeControl)); |
| |
| // Always request all the features from VK_EXT_subgroup_size_control when available. |
| usedKnobs.subgroupSizeControlFeatures = mDeviceInfo.subgroupSizeControlFeatures; |
| featuresChain.Add(&usedKnobs.subgroupSizeControlFeatures); |
| |
| mComputeSubgroupSize = FindComputeSubgroupSize(); |
| } |
| |
| if (mDeviceInfo.features.samplerAnisotropy == VK_TRUE) { |
| usedKnobs.features.samplerAnisotropy = VK_TRUE; |
| } |
| |
| if (IsExtensionEnabled(Extension::TextureCompressionBC)) { |
| ASSERT(ToBackend(GetAdapter())->GetDeviceInfo().features.textureCompressionBC == |
| VK_TRUE); |
| usedKnobs.features.textureCompressionBC = VK_TRUE; |
| } |
| |
| if (IsExtensionEnabled(Extension::TextureCompressionETC2)) { |
| ASSERT(ToBackend(GetAdapter())->GetDeviceInfo().features.textureCompressionETC2 == |
| VK_TRUE); |
| usedKnobs.features.textureCompressionETC2 = VK_TRUE; |
| } |
| |
| if (IsExtensionEnabled(Extension::TextureCompressionASTC)) { |
| ASSERT(ToBackend(GetAdapter())->GetDeviceInfo().features.textureCompressionASTC_LDR == |
| VK_TRUE); |
| usedKnobs.features.textureCompressionASTC_LDR = VK_TRUE; |
| } |
| |
| if (IsExtensionEnabled(Extension::PipelineStatisticsQuery)) { |
| ASSERT(ToBackend(GetAdapter())->GetDeviceInfo().features.pipelineStatisticsQuery == |
| VK_TRUE); |
| usedKnobs.features.pipelineStatisticsQuery = VK_TRUE; |
| } |
| |
| if (IsExtensionEnabled(Extension::ShaderFloat16)) { |
| const VulkanDeviceInfo& deviceInfo = ToBackend(GetAdapter())->GetDeviceInfo(); |
| ASSERT(deviceInfo.HasExt(DeviceExt::ShaderFloat16Int8) && |
| deviceInfo.shaderFloat16Int8Features.shaderFloat16 == VK_TRUE && |
| deviceInfo.HasExt(DeviceExt::_16BitStorage) && |
| deviceInfo._16BitStorageFeatures.storageBuffer16BitAccess == VK_TRUE && |
| deviceInfo._16BitStorageFeatures.uniformAndStorageBuffer16BitAccess == VK_TRUE); |
| |
| usedKnobs.shaderFloat16Int8Features.shaderFloat16 = VK_TRUE; |
| usedKnobs._16BitStorageFeatures.storageBuffer16BitAccess = VK_TRUE; |
| usedKnobs._16BitStorageFeatures.uniformAndStorageBuffer16BitAccess = VK_TRUE; |
| |
| featuresChain.Add(&usedKnobs.shaderFloat16Int8Features, |
| VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SHADER_FLOAT16_INT8_FEATURES_KHR); |
| featuresChain.Add(&usedKnobs._16BitStorageFeatures, |
| VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_16BIT_STORAGE_FEATURES); |
| } |
| |
| if (IsExtensionEnabled(Extension::DepthClamping)) { |
| ASSERT(ToBackend(GetAdapter())->GetDeviceInfo().features.depthClamp == VK_TRUE); |
| usedKnobs.features.depthClamp = VK_TRUE; |
| } |
| |
| // Find a universal queue family |
| { |
| // Note that GRAPHICS and COMPUTE imply TRANSFER so we don't need to check for it. |
| constexpr uint32_t kUniversalFlags = VK_QUEUE_GRAPHICS_BIT | VK_QUEUE_COMPUTE_BIT; |
| int universalQueueFamily = -1; |
| for (unsigned int i = 0; i < mDeviceInfo.queueFamilies.size(); ++i) { |
| if ((mDeviceInfo.queueFamilies[i].queueFlags & kUniversalFlags) == |
| kUniversalFlags) { |
| universalQueueFamily = i; |
| break; |
| } |
| } |
| |
| if (universalQueueFamily == -1) { |
| return DAWN_INTERNAL_ERROR("No universal queue family"); |
| } |
| mQueueFamily = static_cast<uint32_t>(universalQueueFamily); |
| } |
| |
| // Choose to create a single universal queue |
| std::vector<VkDeviceQueueCreateInfo> queuesToRequest; |
| float zero = 0.0f; |
| { |
| VkDeviceQueueCreateInfo queueCreateInfo; |
| queueCreateInfo.sType = VK_STRUCTURE_TYPE_DEVICE_QUEUE_CREATE_INFO; |
| queueCreateInfo.pNext = nullptr; |
| queueCreateInfo.flags = 0; |
| queueCreateInfo.queueFamilyIndex = static_cast<uint32_t>(mQueueFamily); |
| queueCreateInfo.queueCount = 1; |
| queueCreateInfo.pQueuePriorities = &zero; |
| |
| queuesToRequest.push_back(queueCreateInfo); |
| } |
| |
| VkDeviceCreateInfo createInfo; |
| createInfo.sType = VK_STRUCTURE_TYPE_DEVICE_CREATE_INFO; |
| createInfo.pNext = nullptr; |
| createInfo.flags = 0; |
| createInfo.queueCreateInfoCount = static_cast<uint32_t>(queuesToRequest.size()); |
| createInfo.pQueueCreateInfos = queuesToRequest.data(); |
| createInfo.enabledLayerCount = 0; |
| createInfo.ppEnabledLayerNames = nullptr; |
| createInfo.enabledExtensionCount = static_cast<uint32_t>(extensionNames.size()); |
| createInfo.ppEnabledExtensionNames = extensionNames.data(); |
| |
| // When we have DeviceExt::GetPhysicalDeviceProperties2, use features2 so that features not |
| // covered by VkPhysicalDeviceFeatures can be enabled. |
| if (mDeviceInfo.HasExt(DeviceExt::GetPhysicalDeviceProperties2)) { |
| features2.features = usedKnobs.features; |
| createInfo.pNext = &features2; |
| createInfo.pEnabledFeatures = nullptr; |
| } else { |
| ASSERT(features2.pNext == nullptr); |
| createInfo.pEnabledFeatures = &usedKnobs.features; |
| } |
| |
| DAWN_TRY(CheckVkSuccess(fn.CreateDevice(physicalDevice, &createInfo, nullptr, &mVkDevice), |
| "vkCreateDevice")); |
| |
| return usedKnobs; |
| } |
| |
| uint32_t Device::FindComputeSubgroupSize() const { |
| if (!mDeviceInfo.HasExt(DeviceExt::SubgroupSizeControl)) { |
| return 0; |
| } |
| |
| const VkPhysicalDeviceSubgroupSizeControlPropertiesEXT& ext = |
| mDeviceInfo.subgroupSizeControlProperties; |
| |
| if (ext.minSubgroupSize == ext.maxSubgroupSize) { |
| return 0; |
| } |
| |
| // At the moment, only Intel devices support varying subgroup sizes and 16, which is the |
| // next value after the minimum of 8, is the sweet spot according to [1]. Hence the |
| // following heuristics, which may need to be adjusted in the future for other |
| // architectures, or if a specific API is added to let client code select the size.. |
| // |
| // [1] https://bugs.freedesktop.org/show_bug.cgi?id=108875 |
| uint32_t subgroupSize = ext.minSubgroupSize * 2; |
| if (subgroupSize <= ext.maxSubgroupSize) { |
| return subgroupSize; |
| } else { |
| return ext.minSubgroupSize; |
| } |
| } |
| |
| void Device::GatherQueueFromDevice() { |
| fn.GetDeviceQueue(mVkDevice, mQueueFamily, 0, &mQueue); |
| } |
| |
| void Device::InitTogglesFromDriver() { |
| // TODO(crbug.com/dawn/857): tighten this workaround when this issue is fixed in both |
| // Vulkan SPEC and drivers. |
| SetToggle(Toggle::UseTemporaryBufferInCompressedTextureToTextureCopy, true); |
| |
| // By default try to use D32S8 for Depth24PlusStencil8 |
| SetToggle(Toggle::VulkanUseD32S8, true); |
| } |
| |
| void Device::ApplyDepth24PlusS8Toggle() { |
| VkPhysicalDevice physicalDevice = ToBackend(GetAdapter())->GetPhysicalDevice(); |
| |
| bool supportsD32s8 = false; |
| { |
| VkFormatProperties properties; |
| fn.GetPhysicalDeviceFormatProperties(physicalDevice, VK_FORMAT_D32_SFLOAT_S8_UINT, |
| &properties); |
| supportsD32s8 = |
| properties.optimalTilingFeatures & VK_FORMAT_FEATURE_DEPTH_STENCIL_ATTACHMENT_BIT; |
| } |
| |
| bool supportsD24s8 = false; |
| { |
| VkFormatProperties properties; |
| fn.GetPhysicalDeviceFormatProperties(physicalDevice, VK_FORMAT_D24_UNORM_S8_UINT, |
| &properties); |
| supportsD24s8 = |
| properties.optimalTilingFeatures & VK_FORMAT_FEATURE_DEPTH_STENCIL_ATTACHMENT_BIT; |
| } |
| |
| ASSERT(supportsD32s8 || supportsD24s8); |
| |
| if (!supportsD24s8) { |
| ForceSetToggle(Toggle::VulkanUseD32S8, true); |
| } |
| if (!supportsD32s8) { |
| ForceSetToggle(Toggle::VulkanUseD32S8, false); |
| } |
| } |
| |
| VulkanFunctions* Device::GetMutableFunctions() { |
| return const_cast<VulkanFunctions*>(&fn); |
| } |
| |
| ResultOrError<VkFence> Device::GetUnusedFence() { |
| if (!mUnusedFences.empty()) { |
| VkFence fence = mUnusedFences.back(); |
| DAWN_TRY(CheckVkSuccess(fn.ResetFences(mVkDevice, 1, &*fence), "vkResetFences")); |
| |
| mUnusedFences.pop_back(); |
| return fence; |
| } |
| |
| VkFenceCreateInfo createInfo; |
| createInfo.sType = VK_STRUCTURE_TYPE_FENCE_CREATE_INFO; |
| createInfo.pNext = nullptr; |
| createInfo.flags = 0; |
| |
| VkFence fence = VK_NULL_HANDLE; |
| DAWN_TRY(CheckVkSuccess(fn.CreateFence(mVkDevice, &createInfo, nullptr, &*fence), |
| "vkCreateFence")); |
| |
| return fence; |
| } |
| |
| ResultOrError<ExecutionSerial> Device::CheckAndUpdateCompletedSerials() { |
| ExecutionSerial fenceSerial(0); |
| while (!mFencesInFlight.empty()) { |
| VkFence fence = mFencesInFlight.front().first; |
| ExecutionSerial tentativeSerial = mFencesInFlight.front().second; |
| VkResult result = VkResult::WrapUnsafe( |
| INJECT_ERROR_OR_RUN(fn.GetFenceStatus(mVkDevice, fence), VK_ERROR_DEVICE_LOST)); |
| |
| // Fence are added in order, so we can stop searching as soon |
| // as we see one that's not ready. |
| if (result == VK_NOT_READY) { |
| return fenceSerial; |
| } else { |
| DAWN_TRY(CheckVkSuccess(::VkResult(result), "GetFenceStatus")); |
| } |
| |
| // Update fenceSerial since fence is ready. |
| fenceSerial = tentativeSerial; |
| |
| mUnusedFences.push_back(fence); |
| |
| ASSERT(fenceSerial > GetCompletedCommandSerial()); |
| mFencesInFlight.pop(); |
| } |
| return fenceSerial; |
| } |
| |
| MaybeError Device::PrepareRecordingContext() { |
| ASSERT(!mRecordingContext.used); |
| ASSERT(mRecordingContext.commandBuffer == VK_NULL_HANDLE); |
| ASSERT(mRecordingContext.commandPool == VK_NULL_HANDLE); |
| |
| // First try to recycle unused command pools. |
| if (!mUnusedCommands.empty()) { |
| CommandPoolAndBuffer commands = mUnusedCommands.back(); |
| mUnusedCommands.pop_back(); |
| DAWN_TRY_WITH_CLEANUP(CheckVkSuccess(fn.ResetCommandPool(mVkDevice, commands.pool, 0), |
| "vkResetCommandPool"), |
| { |
| // vkResetCommandPool failed (it may return out-of-memory). |
| // Free the commands in the cleanup step before returning to |
| // reclaim memory. |
| |
| // The VkCommandBuffer memory should be wholly owned by the |
| // pool and freed when it is destroyed, but that's not the |
| // case in some drivers and they leak memory. So we call |
| // FreeCommandBuffers before DestroyCommandPool to be safe. |
| // TODO(enga): Only do this on a known list of bad drivers. |
| fn.FreeCommandBuffers(mVkDevice, commands.pool, 1, |
| &commands.commandBuffer); |
| fn.DestroyCommandPool(mVkDevice, commands.pool, nullptr); |
| }); |
| |
| mRecordingContext.commandBuffer = commands.commandBuffer; |
| mRecordingContext.commandPool = commands.pool; |
| } else { |
| // Create a new command pool for our commands and allocate the command buffer. |
| VkCommandPoolCreateInfo createInfo; |
| createInfo.sType = VK_STRUCTURE_TYPE_COMMAND_POOL_CREATE_INFO; |
| createInfo.pNext = nullptr; |
| createInfo.flags = VK_COMMAND_POOL_CREATE_TRANSIENT_BIT; |
| createInfo.queueFamilyIndex = mQueueFamily; |
| |
| DAWN_TRY(CheckVkSuccess(fn.CreateCommandPool(mVkDevice, &createInfo, nullptr, |
| &*mRecordingContext.commandPool), |
| "vkCreateCommandPool")); |
| |
| VkCommandBufferAllocateInfo allocateInfo; |
| allocateInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_ALLOCATE_INFO; |
| allocateInfo.pNext = nullptr; |
| allocateInfo.commandPool = mRecordingContext.commandPool; |
| allocateInfo.level = VK_COMMAND_BUFFER_LEVEL_PRIMARY; |
| allocateInfo.commandBufferCount = 1; |
| |
| DAWN_TRY(CheckVkSuccess(fn.AllocateCommandBuffers(mVkDevice, &allocateInfo, |
| &mRecordingContext.commandBuffer), |
| "vkAllocateCommandBuffers")); |
| } |
| |
| // Start the recording of commands in the command buffer. |
| VkCommandBufferBeginInfo beginInfo; |
| beginInfo.sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO; |
| beginInfo.pNext = nullptr; |
| beginInfo.flags = VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT; |
| beginInfo.pInheritanceInfo = nullptr; |
| |
| return CheckVkSuccess(fn.BeginCommandBuffer(mRecordingContext.commandBuffer, &beginInfo), |
| "vkBeginCommandBuffer"); |
| } |
| |
| void Device::RecycleCompletedCommands() { |
| for (auto& commands : mCommandsInFlight.IterateUpTo(GetCompletedCommandSerial())) { |
| mUnusedCommands.push_back(commands); |
| } |
| mCommandsInFlight.ClearUpTo(GetCompletedCommandSerial()); |
| } |
| |
| ResultOrError<std::unique_ptr<StagingBufferBase>> Device::CreateStagingBuffer(size_t size) { |
| std::unique_ptr<StagingBufferBase> stagingBuffer = |
| std::make_unique<StagingBuffer>(size, this); |
| DAWN_TRY(stagingBuffer->Initialize()); |
| return std::move(stagingBuffer); |
| } |
| |
| MaybeError Device::CopyFromStagingToBuffer(StagingBufferBase* source, |
| uint64_t sourceOffset, |
| BufferBase* destination, |
| uint64_t destinationOffset, |
| uint64_t size) { |
| // It is a validation error to do a 0-sized copy in Vulkan, check it is skipped prior to |
| // calling this function. |
| ASSERT(size != 0); |
| |
| CommandRecordingContext* recordingContext = GetPendingRecordingContext(); |
| |
| ToBackend(destination) |
| ->EnsureDataInitializedAsDestination(recordingContext, destinationOffset, size); |
| |
| // There is no need of a barrier to make host writes available and visible to the copy |
| // operation for HOST_COHERENT memory. The Vulkan spec for vkQueueSubmit describes that it |
| // does an implicit availability, visibility and domain operation. |
| |
| // Insert pipeline barrier to ensure correct ordering with previous memory operations on the |
| // buffer. |
| ToBackend(destination)->TransitionUsageNow(recordingContext, wgpu::BufferUsage::CopyDst); |
| |
| VkBufferCopy copy; |
| copy.srcOffset = sourceOffset; |
| copy.dstOffset = destinationOffset; |
| copy.size = size; |
| |
| this->fn.CmdCopyBuffer(recordingContext->commandBuffer, |
| ToBackend(source)->GetBufferHandle(), |
| ToBackend(destination)->GetHandle(), 1, ©); |
| |
| return {}; |
| } |
| |
| MaybeError Device::CopyFromStagingToTexture(const StagingBufferBase* source, |
| const TextureDataLayout& src, |
| TextureCopy* dst, |
| const Extent3D& copySizePixels) { |
| // There is no need of a barrier to make host writes available and visible to the copy |
| // operation for HOST_COHERENT memory. The Vulkan spec for vkQueueSubmit describes that it |
| // does an implicit availability, visibility and domain operation. |
| |
| CommandRecordingContext* recordingContext = GetPendingRecordingContext(); |
| |
| VkBufferImageCopy region = ComputeBufferImageCopyRegion(src, *dst, copySizePixels); |
| VkImageSubresourceLayers subresource = region.imageSubresource; |
| |
| ASSERT(dst->texture->GetDimension() != wgpu::TextureDimension::e1D); |
| SubresourceRange range = GetSubresourcesAffectedByCopy(*dst, copySizePixels); |
| |
| if (IsCompleteSubresourceCopiedTo(dst->texture.Get(), copySizePixels, |
| subresource.mipLevel)) { |
| // Since texture has been overwritten, it has been "initialized" |
| dst->texture->SetIsSubresourceContentInitialized(true, range); |
| } else { |
| ToBackend(dst->texture)->EnsureSubresourceContentInitialized(recordingContext, range); |
| } |
| // Insert pipeline barrier to ensure correct ordering with previous memory operations on the |
| // texture. |
| ToBackend(dst->texture) |
| ->TransitionUsageNow(recordingContext, wgpu::TextureUsage::CopyDst, range); |
| VkImage dstImage = ToBackend(dst->texture)->GetHandle(); |
| |
| // Dawn guarantees dstImage be in the TRANSFER_DST_OPTIMAL layout after the |
| // copy command. |
| this->fn.CmdCopyBufferToImage(recordingContext->commandBuffer, |
| ToBackend(source)->GetBufferHandle(), dstImage, |
| VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, 1, ®ion); |
| return {}; |
| } |
| |
| MaybeError Device::ImportExternalImage(const ExternalImageDescriptorVk* descriptor, |
| ExternalMemoryHandle memoryHandle, |
| VkImage image, |
| const std::vector<ExternalSemaphoreHandle>& waitHandles, |
| VkSemaphore* outSignalSemaphore, |
| VkDeviceMemory* outAllocation, |
| std::vector<VkSemaphore>* outWaitSemaphores) { |
| const TextureDescriptor* textureDescriptor = |
| reinterpret_cast<const TextureDescriptor*>(descriptor->cTextureDescriptor); |
| |
| const DawnTextureInternalUsageDescriptor* internalUsageDesc = nullptr; |
| FindInChain(textureDescriptor->nextInChain, &internalUsageDesc); |
| |
| wgpu::TextureUsage usage = textureDescriptor->usage; |
| if (internalUsageDesc != nullptr) { |
| usage |= internalUsageDesc->internalUsage; |
| } |
| |
| // Check services support this combination of handle type / image info |
| if (!mExternalSemaphoreService->Supported()) { |
| return DAWN_VALIDATION_ERROR("External semaphore usage not supported"); |
| } |
| if (!mExternalMemoryService->SupportsImportMemory( |
| VulkanImageFormat(this, textureDescriptor->format), VK_IMAGE_TYPE_2D, |
| VK_IMAGE_TILING_OPTIMAL, |
| VulkanImageUsage(usage, GetValidInternalFormat(textureDescriptor->format)), |
| VK_IMAGE_CREATE_ALIAS_BIT_KHR)) { |
| return DAWN_VALIDATION_ERROR("External memory usage not supported"); |
| } |
| |
| // Create an external semaphore to signal when the texture is done being used |
| DAWN_TRY_ASSIGN(*outSignalSemaphore, |
| mExternalSemaphoreService->CreateExportableSemaphore()); |
| |
| // Import the external image's memory |
| external_memory::MemoryImportParams importParams; |
| DAWN_TRY_ASSIGN(importParams, |
| mExternalMemoryService->GetMemoryImportParams(descriptor, image)); |
| DAWN_TRY_ASSIGN(*outAllocation, |
| mExternalMemoryService->ImportMemory(memoryHandle, importParams, image)); |
| |
| // Import semaphores we have to wait on before using the texture |
| for (const ExternalSemaphoreHandle& handle : waitHandles) { |
| VkSemaphore semaphore = VK_NULL_HANDLE; |
| DAWN_TRY_ASSIGN(semaphore, mExternalSemaphoreService->ImportSemaphore(handle)); |
| outWaitSemaphores->push_back(semaphore); |
| } |
| |
| return {}; |
| } |
| |
| bool Device::SignalAndExportExternalTexture( |
| Texture* texture, |
| VkImageLayout desiredLayout, |
| ExternalImageExportInfoVk* info, |
| std::vector<ExternalSemaphoreHandle>* semaphoreHandles) { |
| return !ConsumedError([&]() -> MaybeError { |
| DAWN_TRY(ValidateObject(texture)); |
| |
| VkSemaphore signalSemaphore; |
| VkImageLayout releasedOldLayout; |
| VkImageLayout releasedNewLayout; |
| DAWN_TRY(texture->ExportExternalTexture(desiredLayout, &signalSemaphore, |
| &releasedOldLayout, &releasedNewLayout)); |
| |
| ExternalSemaphoreHandle semaphoreHandle; |
| DAWN_TRY_ASSIGN(semaphoreHandle, |
| mExternalSemaphoreService->ExportSemaphore(signalSemaphore)); |
| semaphoreHandles->push_back(semaphoreHandle); |
| info->releasedOldLayout = releasedOldLayout; |
| info->releasedNewLayout = releasedNewLayout; |
| info->isInitialized = |
| texture->IsSubresourceContentInitialized(texture->GetAllSubresources()); |
| |
| return {}; |
| }()); |
| } |
| |
| TextureBase* Device::CreateTextureWrappingVulkanImage( |
| const ExternalImageDescriptorVk* descriptor, |
| ExternalMemoryHandle memoryHandle, |
| const std::vector<ExternalSemaphoreHandle>& waitHandles) { |
| const TextureDescriptor* textureDescriptor = |
| reinterpret_cast<const TextureDescriptor*>(descriptor->cTextureDescriptor); |
| |
| // Initial validation |
| if (ConsumedError(ValidateTextureDescriptor(this, textureDescriptor))) { |
| return nullptr; |
| } |
| if (ConsumedError(ValidateVulkanImageCanBeWrapped(this, textureDescriptor))) { |
| return nullptr; |
| } |
| |
| VkSemaphore signalSemaphore = VK_NULL_HANDLE; |
| VkDeviceMemory allocation = VK_NULL_HANDLE; |
| std::vector<VkSemaphore> waitSemaphores; |
| waitSemaphores.reserve(waitHandles.size()); |
| |
| // Cleanup in case of a failure, the image creation doesn't acquire the external objects |
| // if a failure happems. |
| Texture* result = nullptr; |
| // TODO(crbug.com/1026480): Consolidate this into a single CreateFromExternal call. |
| if (ConsumedError(Texture::CreateFromExternal(this, descriptor, textureDescriptor, |
| mExternalMemoryService.get()), |
| &result) || |
| ConsumedError(ImportExternalImage(descriptor, memoryHandle, result->GetHandle(), |
| waitHandles, &signalSemaphore, &allocation, |
| &waitSemaphores)) || |
| ConsumedError(result->BindExternalMemory(descriptor, signalSemaphore, allocation, |
| waitSemaphores))) { |
| // Delete the Texture if it was created |
| if (result != nullptr) { |
| result->Release(); |
| } |
| |
| // Clear the signal semaphore |
| fn.DestroySemaphore(GetVkDevice(), signalSemaphore, nullptr); |
| |
| // Clear image memory |
| fn.FreeMemory(GetVkDevice(), allocation, nullptr); |
| |
| // Clear any wait semaphores we were able to import |
| for (VkSemaphore semaphore : waitSemaphores) { |
| fn.DestroySemaphore(GetVkDevice(), semaphore, nullptr); |
| } |
| return nullptr; |
| } |
| |
| return result; |
| } |
| |
| uint32_t Device::GetComputeSubgroupSize() const { |
| return mComputeSubgroupSize; |
| } |
| |
| MaybeError Device::WaitForIdleForDestruction() { |
| // Immediately tag the recording context as unused so we don't try to submit it in Tick. |
| // Move the mRecordingContext.used to mUnusedCommands so it can be cleaned up in |
| // ShutDownImpl |
| if (mRecordingContext.used) { |
| CommandPoolAndBuffer commands = {mRecordingContext.commandPool, |
| mRecordingContext.commandBuffer}; |
| mUnusedCommands.push_back(commands); |
| mRecordingContext = CommandRecordingContext(); |
| } |
| |
| VkResult waitIdleResult = VkResult::WrapUnsafe(fn.QueueWaitIdle(mQueue)); |
| // Ignore the result of QueueWaitIdle: it can return OOM which we can't really do anything |
| // about, Device lost, which means workloads running on the GPU are no longer accessible |
| // (so they are as good as waited on) or success. |
| DAWN_UNUSED(waitIdleResult); |
| |
| // Make sure all fences are complete by explicitly waiting on them all |
| while (!mFencesInFlight.empty()) { |
| VkFence fence = mFencesInFlight.front().first; |
| ExecutionSerial fenceSerial = mFencesInFlight.front().second; |
| ASSERT(fenceSerial > GetCompletedCommandSerial()); |
| |
| VkResult result = VkResult::WrapUnsafe(VK_TIMEOUT); |
| do { |
| // If WaitForIdleForDesctruction is called while we are Disconnected, it means that |
| // the device lost came from the ErrorInjector and we need to wait without allowing |
| // any more error to be injected. This is because the device lost was "fake" and |
| // commands might still be running. |
| if (GetState() == State::Disconnected) { |
| result = VkResult::WrapUnsafe( |
| fn.WaitForFences(mVkDevice, 1, &*fence, true, UINT64_MAX)); |
| continue; |
| } |
| |
| result = VkResult::WrapUnsafe( |
| INJECT_ERROR_OR_RUN(fn.WaitForFences(mVkDevice, 1, &*fence, true, UINT64_MAX), |
| VK_ERROR_DEVICE_LOST)); |
| } while (result == VK_TIMEOUT); |
| // Ignore errors from vkWaitForFences: it can be either OOM which we can't do anything |
| // about (and we need to keep going with the destruction of all fences), or device |
| // loss, which means the workload on the GPU is no longer accessible and we can |
| // safely destroy the fence. |
| |
| fn.DestroyFence(mVkDevice, fence, nullptr); |
| mFencesInFlight.pop(); |
| } |
| return {}; |
| } |
| |
| void Device::ShutDownImpl() { |
| ASSERT(GetState() == State::Disconnected); |
| |
| // We failed during initialization so early that we don't even have a VkDevice. There is |
| // nothing to do. |
| if (mVkDevice == VK_NULL_HANDLE) { |
| return; |
| } |
| |
| // The deleter is the second thing we initialize. If it is not present, it means that |
| // only the VkDevice was created and nothing else. Destroy the device and do nothing else |
| // because the function pointers might not have been loaded (and there is nothing to |
| // destroy anyway). |
| if (mDeleter == nullptr) { |
| fn.DestroyDevice(mVkDevice, nullptr); |
| mVkDevice = VK_NULL_HANDLE; |
| return; |
| } |
| |
| // Enough of the Device's initialization happened that we can now do regular robust |
| // deinitialization. |
| |
| // Immediately tag the recording context as unused so we don't try to submit it in Tick. |
| mRecordingContext.used = false; |
| if (mRecordingContext.commandPool != VK_NULL_HANDLE) { |
| // The VkCommandBuffer memory should be wholly owned by the pool and freed when it is |
| // destroyed, but that's not the case in some drivers and the leak memory. |
| // So we call FreeCommandBuffers before DestroyCommandPool to be safe. |
| // TODO(enga): Only do this on a known list of bad drivers. |
| fn.FreeCommandBuffers(mVkDevice, mRecordingContext.commandPool, 1, |
| &mRecordingContext.commandBuffer); |
| fn.DestroyCommandPool(mVkDevice, mRecordingContext.commandPool, nullptr); |
| } |
| |
| for (VkSemaphore semaphore : mRecordingContext.waitSemaphores) { |
| fn.DestroySemaphore(mVkDevice, semaphore, nullptr); |
| } |
| mRecordingContext.waitSemaphores.clear(); |
| |
| for (VkSemaphore semaphore : mRecordingContext.signalSemaphores) { |
| fn.DestroySemaphore(mVkDevice, semaphore, nullptr); |
| } |
| mRecordingContext.signalSemaphores.clear(); |
| |
| // Some commands might still be marked as in-flight if we shut down because of a device |
| // loss. Recycle them as unused so that we free them below. |
| RecycleCompletedCommands(); |
| ASSERT(mCommandsInFlight.Empty()); |
| |
| for (const CommandPoolAndBuffer& commands : mUnusedCommands) { |
| // The VkCommandBuffer memory should be wholly owned by the pool and freed when it is |
| // destroyed, but that's not the case in some drivers and the leak memory. |
| // So we call FreeCommandBuffers before DestroyCommandPool to be safe. |
| // TODO(enga): Only do this on a known list of bad drivers. |
| fn.FreeCommandBuffers(mVkDevice, commands.pool, 1, &commands.commandBuffer); |
| fn.DestroyCommandPool(mVkDevice, commands.pool, nullptr); |
| } |
| mUnusedCommands.clear(); |
| |
| // Some fences might still be marked as in-flight if we shut down because of a device loss. |
| // Delete them since at this point all commands are complete. |
| while (!mFencesInFlight.empty()) { |
| fn.DestroyFence(mVkDevice, *mFencesInFlight.front().first, nullptr); |
| mFencesInFlight.pop(); |
| } |
| |
| for (VkFence fence : mUnusedFences) { |
| fn.DestroyFence(mVkDevice, fence, nullptr); |
| } |
| mUnusedFences.clear(); |
| |
| ExecutionSerial completedSerial = GetCompletedCommandSerial(); |
| for (Ref<BindGroupLayout>& bgl : |
| mBindGroupLayoutsPendingDeallocation.IterateUpTo(completedSerial)) { |
| bgl->FinishDeallocation(completedSerial); |
| } |
| mBindGroupLayoutsPendingDeallocation.ClearUpTo(completedSerial); |
| |
| // Releasing the uploader enqueues buffers to be released. |
| // Call Tick() again to clear them before releasing the deleter. |
| mResourceMemoryAllocator->Tick(completedSerial); |
| mDeleter->Tick(completedSerial); |
| |
| // Allow recycled memory to be deleted. |
| mResourceMemoryAllocator->DestroyPool(); |
| |
| // The VkRenderPasses in the cache can be destroyed immediately since all commands referring |
| // to them are guaranteed to be finished executing. |
| mRenderPassCache = nullptr; |
| |
| // We need handle deleting all child objects by calling Tick() again with a large serial to |
| // force all operations to look as if they were completed, and delete all objects before |
| // destroying the Deleter and vkDevice. |
| ASSERT(mDeleter != nullptr); |
| mDeleter->Tick(kMaxExecutionSerial); |
| mDeleter = nullptr; |
| |
| // VkQueues are destroyed when the VkDevice is destroyed |
| // The VkDevice is needed to destroy child objects, so it must be destroyed last after all |
| // child objects have been deleted. |
| ASSERT(mVkDevice != VK_NULL_HANDLE); |
| fn.DestroyDevice(mVkDevice, nullptr); |
| mVkDevice = VK_NULL_HANDLE; |
| } |
| |
| uint32_t Device::GetOptimalBytesPerRowAlignment() const { |
| return mDeviceInfo.properties.limits.optimalBufferCopyRowPitchAlignment; |
| } |
| |
| uint64_t Device::GetOptimalBufferToTextureCopyOffsetAlignment() const { |
| return mDeviceInfo.properties.limits.optimalBufferCopyOffsetAlignment; |
| } |
| |
| float Device::GetTimestampPeriodInNS() const { |
| return mDeviceInfo.properties.limits.timestampPeriod; |
| } |
| |
| }} // namespace dawn_native::vulkan |
