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// Copyright 2018 The Dawn & Tint Authors
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this
// list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include "dawn/native/Instance.h"
#include <utility>
#include "dawn/common/Assert.h"
#include "dawn/common/FutureUtils.h"
#include "dawn/common/GPUInfo.h"
#include "dawn/common/Log.h"
#include "dawn/common/SystemUtils.h"
#include "dawn/common/WGSLFeatureMapping.h"
#include "dawn/native/CallbackTaskManager.h"
#include "dawn/native/ChainUtils.h"
#include "dawn/native/Device.h"
#include "dawn/native/ErrorData.h"
#include "dawn/native/Surface.h"
#include "dawn/native/Toggles.h"
#include "dawn/native/ValidationUtils_autogen.h"
#include "dawn/platform/DawnPlatform.h"
#include "tint/lang/wgsl/features/status.h"
// For SwiftShader fallback
#if defined(DAWN_ENABLE_BACKEND_VULKAN)
#include "dawn/native/VulkanBackend.h"
#endif // defined(DAWN_ENABLE_BACKEND_VULKAN)
#if defined(DAWN_ENABLE_BACKEND_D3D11) || defined(DAWN_ENABLE_BACKEND_D3D12)
#include "dawn/native/D3DBackend.h"
#include "dawn/native/d3d/BackendD3D.h"
#include "dawn/native/d3d/D3DError.h"
#endif // defined(DAWN_ENABLE_BACKEND_D3D11) || defined(DAWN_ENABLE_BACKEND_D3D12)
#if defined(DAWN_ENABLE_BACKEND_OPENGL)
#include "dawn/native/OpenGLBackend.h"
#endif // defined(DAWN_ENABLE_BACKEND_OPENGL)
#if defined(DAWN_USE_X11)
#include "dawn/native/X11Functions.h"
#endif // defined(DAWN_USE_X11)
#if DAWN_PLATFORM_IS(ANDROID)
#include "dawn/native/AHBFunctions.h"
#endif // DAWN_PLATFORM_IS(ANDROID)
namespace dawn::native {
// Forward definitions of each backend's "Connect" function that creates new BackendConnection.
// Conditionally compiled declarations are used to avoid using static constructors instead.
#if defined(DAWN_ENABLE_BACKEND_D3D11)
namespace d3d11 {
BackendConnection* Connect(InstanceBase* instance);
}
#endif // defined(DAWN_ENABLE_BACKEND_D3D11)
#if defined(DAWN_ENABLE_BACKEND_D3D12)
namespace d3d12 {
BackendConnection* Connect(InstanceBase* instance);
}
#endif // defined(DAWN_ENABLE_BACKEND_D3D12)
#if defined(DAWN_ENABLE_BACKEND_METAL)
namespace metal {
BackendConnection* Connect(InstanceBase* instance);
}
#endif // defined(DAWN_ENABLE_BACKEND_METAL)
#if defined(DAWN_ENABLE_BACKEND_NULL)
namespace null {
BackendConnection* Connect(InstanceBase* instance);
}
#endif // defined(DAWN_ENABLE_BACKEND_NULL)
#if defined(DAWN_ENABLE_BACKEND_OPENGL)
namespace opengl {
BackendConnection* Connect(InstanceBase* instance, wgpu::BackendType backendType);
}
#endif // defined(DAWN_ENABLE_BACKEND_OPENGL)
#if defined(DAWN_ENABLE_BACKEND_VULKAN)
namespace vulkan {
BackendConnection* Connect(InstanceBase* instance);
}
#endif // defined(DAWN_ENABLE_BACKEND_VULKAN)
namespace {
dawn::platform::CachingInterface* GetCachingInterface(dawn::platform::Platform* platform) {
if (platform != nullptr) {
return platform->GetCachingInterface();
}
return nullptr;
}
wgpu::WGSLFeatureName ToWGPUFeature(tint::wgsl::LanguageFeature f) {
switch (f) {
#define CASE(WgslName, WgpuName) \
case tint::wgsl::LanguageFeature::WgslName: \
return wgpu::WGSLFeatureName::WgpuName;
DAWN_FOREACH_WGSL_FEATURE(CASE)
#undef CASE
}
}
} // anonymous namespace
wgpu::Bool APIGetInstanceFeatures(InstanceFeatures* features) {
if (features->nextInChain != nullptr) {
return false;
}
features->timedWaitAnyEnable = true;
features->timedWaitAnyMaxCount = kTimedWaitAnyMaxCountDefault;
return true;
}
InstanceBase* APICreateInstance(const InstanceDescriptor* descriptor) {
auto result = InstanceBase::Create(descriptor);
if (result.IsError()) {
dawn::ErrorLog() << result.AcquireError()->GetFormattedMessage();
return nullptr;
}
return ReturnToAPI(result.AcquireSuccess());
}
// InstanceBase
// static
ResultOrError<Ref<InstanceBase>> InstanceBase::Create(const InstanceDescriptor* descriptor) {
static constexpr InstanceDescriptor kDefaultDesc = {};
if (descriptor == nullptr) {
descriptor = &kDefaultDesc;
}
UnpackedPtr<InstanceDescriptor> unpacked;
DAWN_TRY_ASSIGN(unpacked, ValidateAndUnpack(descriptor));
const DawnTogglesDescriptor* instanceTogglesDesc = unpacked.Get<DawnTogglesDescriptor>();
// Set up the instance toggle state from toggles descriptor
TogglesState instanceToggles =
TogglesState::CreateFromTogglesDescriptor(instanceTogglesDesc, ToggleStage::Instance);
// By default disable the AllowUnsafeAPIs instance toggle, it will be inherited to adapters
// and devices created by this instance if not overriden.
instanceToggles.Default(Toggle::AllowUnsafeAPIs, false);
Ref<InstanceBase> instance = AcquireRef(new InstanceBase(instanceToggles));
DAWN_TRY(instance->Initialize(unpacked));
return instance;
}
InstanceBase::InstanceBase(const TogglesState& instanceToggles) : mToggles(instanceToggles) {}
InstanceBase::~InstanceBase() = default;
void InstanceBase::DeleteThis() {
// Flush all remaining callback tasks on all devices and on the instance.
absl::flat_hash_set<DeviceBase*> devices;
do {
devices.clear();
mDevicesList.Use([&](auto deviceList) { devices.swap(*deviceList); });
for (auto device : devices) {
device->GetCallbackTaskManager()->HandleShutDown();
do {
device->GetCallbackTaskManager()->Flush();
} while (!device->GetCallbackTaskManager()->IsEmpty());
}
} while (!devices.empty());
mCallbackTaskManager->HandleShutDown();
do {
mCallbackTaskManager->Flush();
} while (!mCallbackTaskManager->IsEmpty());
RefCountedWithExternalCount::DeleteThis();
}
void InstanceBase::WillDropLastExternalRef() {
// InstanceBase uses RefCountedWithExternalCount to break refcycles.
// Stop tracking events. See comment on ShutDown.
mEventManager.ShutDown();
// InstanceBase holds backends which hold Refs to PhysicalDeviceBases discovered, which hold
// Refs back to the InstanceBase.
// In order to break this cycle and prevent leaks, when the application drops the last external
// ref and WillDropLastExternalRef is called, the instance clears out any member refs to
// physical devices that hold back-refs to the instance - thus breaking any reference cycles.
for (auto& backend : mBackends) {
if (backend != nullptr) {
backend->ClearPhysicalDevices();
}
}
}
// TODO(crbug.com/dawn/832): make the platform an initialization parameter of the instance.
MaybeError InstanceBase::Initialize(const UnpackedPtr<InstanceDescriptor>& descriptor) {
// Initialize the platform to the default for now.
mDefaultPlatform = std::make_unique<dawn::platform::Platform>();
SetPlatform(mDefaultPlatform.get());
// Process DawnInstanceDescriptor
if (const auto* dawnDesc = descriptor.Get<DawnInstanceDescriptor>()) {
for (uint32_t i = 0; i < dawnDesc->additionalRuntimeSearchPathsCount; ++i) {
mRuntimeSearchPaths.push_back(dawnDesc->additionalRuntimeSearchPaths[i]);
}
SetPlatform(dawnDesc->platform);
mBackendValidationLevel = dawnDesc->backendValidationLevel;
mBeginCaptureOnStartup = dawnDesc->beginCaptureOnStartup;
mEnableAdapterBlocklist = dawnDesc->enableAdapterBlocklist;
}
// Default paths to search are next to the shared library, next to the executable, and
// no path (just libvulkan.so).
if (auto p = GetModuleDirectory()) {
mRuntimeSearchPaths.push_back(std::move(*p));
}
if (auto p = GetExecutableDirectory()) {
mRuntimeSearchPaths.push_back(std::move(*p));
}
mRuntimeSearchPaths.push_back("");
mCallbackTaskManager = AcquireRef(new CallbackTaskManager());
DAWN_TRY(mEventManager.Initialize(descriptor));
GatherWGSLFeatures(descriptor.Get<DawnWGSLBlocklist>());
return {};
}
void InstanceBase::APIRequestAdapter(const RequestAdapterOptions* options,
WGPURequestAdapterCallback callback,
void* userdata) {
APIRequestAdapterF(
options, RequestAdapterCallbackInfo{nullptr, wgpu::CallbackMode::AllowSpontaneous, callback,
userdata});
}
Future InstanceBase::APIRequestAdapterF(const RequestAdapterOptions* options,
const RequestAdapterCallbackInfo& callbackInfo) {
struct RequestAdapterEvent final : public EventManager::TrackedEvent {
WGPURequestAdapterCallback mCallback;
void* mUserdata;
Ref<AdapterBase> mAdapter;
RequestAdapterEvent(const RequestAdapterCallbackInfo& callbackInfo,
Ref<AdapterBase> adapter)
: TrackedEvent(callbackInfo.mode, TrackedEvent::Completed{}),
mCallback(callbackInfo.callback),
mUserdata(callbackInfo.userdata),
mAdapter(std::move(adapter)) {
CompleteIfSpontaneous();
}
~RequestAdapterEvent() override { EnsureComplete(EventCompletionType::Shutdown); }
void Complete(EventCompletionType completionType) override {
WGPUAdapter adapter = ToAPI(ReturnToAPI(std::move(mAdapter)));
if (adapter == nullptr) {
mCallback(WGPURequestAdapterStatus_Unavailable, nullptr, "No supported adapters",
mUserdata);
} else {
mCallback(WGPURequestAdapterStatus_Success, adapter, nullptr, mUserdata);
}
}
};
static constexpr RequestAdapterOptions kDefaultOptions = {};
if (options == nullptr) {
options = &kDefaultOptions;
}
auto adapters = EnumerateAdapters(options);
FutureID futureID = GetEventManager()->TrackEvent(
callbackInfo.mode, AcquireRef(new RequestAdapterEvent(
callbackInfo, adapters.empty() ? nullptr : std::move(adapters[0]))));
return {futureID};
}
Ref<AdapterBase> InstanceBase::CreateAdapter(Ref<PhysicalDeviceBase> physicalDevice,
FeatureLevel featureLevel,
const DawnTogglesDescriptor* requiredAdapterToggles,
wgpu::PowerPreference powerPreference) const {
// Set up toggles state for default adapter from given toggles descriptor and inherit from
// instance toggles.
TogglesState adapterToggles =
TogglesState::CreateFromTogglesDescriptor(requiredAdapterToggles, ToggleStage::Adapter);
adapterToggles.InheritFrom(mToggles);
// Set up forced and default adapter toggles for selected physical device.
physicalDevice->SetupBackendAdapterToggles(&adapterToggles);
return AcquireRef(
new AdapterBase(std::move(physicalDevice), featureLevel, adapterToggles, powerPreference));
}
const TogglesState& InstanceBase::GetTogglesState() const {
return mToggles;
}
const ToggleInfo* InstanceBase::GetToggleInfo(const char* toggleName) {
return mTogglesInfo.GetToggleInfo(toggleName);
}
Toggle InstanceBase::ToggleNameToEnum(const char* toggleName) {
return mTogglesInfo.ToggleNameToEnum(toggleName);
}
const FeatureInfo* InstanceBase::GetFeatureInfo(wgpu::FeatureName feature) {
return dawn::native::GetFeatureInfo(feature);
}
std::vector<Ref<AdapterBase>> InstanceBase::EnumerateAdapters(
const RequestAdapterOptions* options) {
static constexpr RequestAdapterOptions kDefaultOptions = {};
if (options == nullptr) {
// Default path that returns all WebGPU core adapters on the system with default toggles.
return EnumerateAdapters(&kDefaultOptions);
}
UnpackedPtr<RequestAdapterOptions> unpacked = Unpack(options);
auto* togglesDesc = unpacked.Get<DawnTogglesDescriptor>();
FeatureLevel featureLevel =
options->compatibilityMode ? FeatureLevel::Compatibility : FeatureLevel::Core;
std::vector<Ref<AdapterBase>> adapters;
for (const auto& physicalDevice : EnumeratePhysicalDevices(unpacked)) {
DAWN_ASSERT(physicalDevice->SupportsFeatureLevel(featureLevel));
adapters.push_back(
CreateAdapter(physicalDevice, featureLevel, togglesDesc, unpacked->powerPreference));
}
return SortAdapters(std::move(adapters), options);
}
size_t InstanceBase::GetPhysicalDeviceCountForTesting() const {
size_t count = 0;
for (auto& backend : mBackends) {
if (backend != nullptr) {
count += backend->GetPhysicalDeviceCountForTesting();
}
}
return count;
}
BackendConnection* InstanceBase::GetBackendConnection(wgpu::BackendType backendType) {
if (mBackendsTried[backendType]) {
return mBackends[backendType].get();
}
auto Register = [this](BackendConnection* connection, wgpu::BackendType expectedType) {
if (connection != nullptr) {
DAWN_ASSERT(connection->GetType() == expectedType);
DAWN_ASSERT(connection->GetInstance() == this);
mBackends[connection->GetType()] = std::unique_ptr<BackendConnection>(connection);
}
};
switch (backendType) {
#if defined(DAWN_ENABLE_BACKEND_NULL)
case wgpu::BackendType::Null:
Register(null::Connect(this), wgpu::BackendType::Null);
break;
#endif // defined(DAWN_ENABLE_BACKEND_NULL)
#if defined(DAWN_ENABLE_BACKEND_D3D11)
case wgpu::BackendType::D3D11:
Register(d3d11::Connect(this), wgpu::BackendType::D3D11);
break;
#endif // defined(DAWN_ENABLE_BACKEND_D3D11)
#if defined(DAWN_ENABLE_BACKEND_D3D12)
case wgpu::BackendType::D3D12:
Register(d3d12::Connect(this), wgpu::BackendType::D3D12);
break;
#endif // defined(DAWN_ENABLE_BACKEND_D3D12)
#if defined(DAWN_ENABLE_BACKEND_METAL)
case wgpu::BackendType::Metal:
Register(metal::Connect(this), wgpu::BackendType::Metal);
break;
#endif // defined(DAWN_ENABLE_BACKEND_METAL)
#if defined(DAWN_ENABLE_BACKEND_VULKAN)
case wgpu::BackendType::Vulkan:
Register(vulkan::Connect(this), wgpu::BackendType::Vulkan);
break;
#endif // defined(DAWN_ENABLE_BACKEND_VULKAN)
#if defined(DAWN_ENABLE_BACKEND_DESKTOP_GL)
case wgpu::BackendType::OpenGL:
Register(opengl::Connect(this, wgpu::BackendType::OpenGL), wgpu::BackendType::OpenGL);
break;
#endif // defined(DAWN_ENABLE_BACKEND_DESKTOP_GL)
#if defined(DAWN_ENABLE_BACKEND_OPENGLES)
case wgpu::BackendType::OpenGLES:
Register(opengl::Connect(this, wgpu::BackendType::OpenGLES),
wgpu::BackendType::OpenGLES);
break;
#endif // defined(DAWN_ENABLE_BACKEND_OPENGLES)
default:
break;
}
mBackendsTried.set(backendType);
return mBackends[backendType].get();
}
std::vector<Ref<PhysicalDeviceBase>> InstanceBase::EnumeratePhysicalDevices(
const UnpackedPtr<RequestAdapterOptions>& options) {
DAWN_ASSERT(options);
BackendsBitset backendsToFind;
if (options->backendType != wgpu::BackendType::Undefined) {
backendsToFind = {};
if (!ConsumedErrorAndWarnOnce(ValidateBackendType(options->backendType))) {
backendsToFind.set(options->backendType);
}
} else {
backendsToFind.set();
}
std::vector<Ref<PhysicalDeviceBase>> discoveredPhysicalDevices;
for (wgpu::BackendType b : IterateBitSet(backendsToFind)) {
BackendConnection* backend = GetBackendConnection(b);
if (backend != nullptr) {
std::vector<Ref<PhysicalDeviceBase>> physicalDevices =
mBackends[b]->DiscoverPhysicalDevices(options);
discoveredPhysicalDevices.insert(discoveredPhysicalDevices.end(),
physicalDevices.begin(), physicalDevices.end());
}
}
return discoveredPhysicalDevices;
}
bool InstanceBase::ConsumedError(MaybeError maybeError) {
if (maybeError.IsError()) {
ConsumeError(maybeError.AcquireError());
return true;
}
return false;
}
bool InstanceBase::ConsumedErrorAndWarnOnce(MaybeError maybeErr) {
if (!maybeErr.IsError()) {
return false;
}
std::string message = maybeErr.AcquireError()->GetFormattedMessage();
if (mWarningMessages.insert(message).second) {
dawn::WarningLog() << message;
}
return true;
}
bool InstanceBase::IsBackendValidationEnabled() const {
return mBackendValidationLevel != BackendValidationLevel::Disabled;
}
void InstanceBase::SetBackendValidationLevel(BackendValidationLevel level) {
mBackendValidationLevel = level;
}
BackendValidationLevel InstanceBase::GetBackendValidationLevel() const {
return mBackendValidationLevel;
}
void InstanceBase::EnableBeginCaptureOnStartup(bool beginCaptureOnStartup) {
mBeginCaptureOnStartup = beginCaptureOnStartup;
}
bool InstanceBase::IsBeginCaptureOnStartupEnabled() const {
return mBeginCaptureOnStartup;
}
void InstanceBase::EnableAdapterBlocklist(bool enable) {
mEnableAdapterBlocklist = enable;
}
bool InstanceBase::IsAdapterBlocklistEnabled() const {
return mEnableAdapterBlocklist;
}
void InstanceBase::SetPlatform(dawn::platform::Platform* platform) {
if (platform == nullptr) {
mPlatform = mDefaultPlatform.get();
} else {
mPlatform = platform;
}
mBlobCache = std::make_unique<BlobCache>(GetCachingInterface(platform));
}
void InstanceBase::SetPlatformForTesting(dawn::platform::Platform* platform) {
SetPlatform(platform);
}
dawn::platform::Platform* InstanceBase::GetPlatform() {
return mPlatform;
}
BlobCache* InstanceBase::GetBlobCache(bool enabled) {
if (enabled) {
return mBlobCache.get();
}
return &mPassthroughBlobCache;
}
uint64_t InstanceBase::GetDeviceCountForTesting() const {
return mDevicesList.Use([](auto deviceList) { return deviceList->size(); });
}
void InstanceBase::AddDevice(DeviceBase* device) {
mDevicesList.Use([&](auto deviceList) { deviceList->insert(device); });
}
void InstanceBase::RemoveDevice(DeviceBase* device) {
mDevicesList.Use([&](auto deviceList) { deviceList->erase(device); });
}
void InstanceBase::APIProcessEvents() {
std::vector<Ref<DeviceBase>> devices;
mDevicesList.Use([&](auto deviceList) {
for (auto device : *deviceList) {
devices.push_back(device);
}
});
for (auto device : devices) {
device->APITick();
}
mCallbackTaskManager->Flush();
mEventManager.ProcessPollEvents();
}
wgpu::WaitStatus InstanceBase::APIWaitAny(size_t count,
FutureWaitInfo* futures,
uint64_t timeoutNS) {
return mEventManager.WaitAny(count, futures, Nanoseconds(timeoutNS));
}
const std::vector<std::string>& InstanceBase::GetRuntimeSearchPaths() const {
return mRuntimeSearchPaths;
}
const Ref<CallbackTaskManager>& InstanceBase::GetCallbackTaskManager() const {
return mCallbackTaskManager;
}
EventManager* InstanceBase::GetEventManager() {
return &mEventManager;
}
void InstanceBase::ConsumeError(std::unique_ptr<ErrorData> error) {
DAWN_ASSERT(error != nullptr);
dawn::ErrorLog() << error->GetFormattedMessage();
}
const X11Functions* InstanceBase::GetOrLoadX11Functions() {
#if defined(DAWN_USE_X11)
if (mX11Functions == nullptr) {
mX11Functions = std::make_unique<X11Functions>();
}
return mX11Functions.get();
#else
DAWN_UNREACHABLE();
#endif // defined(DAWN_USE_X11)
}
const AHBFunctions* InstanceBase::GetOrLoadAHBFunctions() {
#if DAWN_PLATFORM_IS(ANDROID)
if (mAHBFunctions == nullptr) {
mAHBFunctions = std::make_unique<AHBFunctions>();
}
return mAHBFunctions.get();
#else
DAWN_UNREACHABLE();
#endif // DAWN_PLATFORM_IS(ANDROID)
}
Surface* InstanceBase::APICreateSurface(const SurfaceDescriptor* descriptor) {
UnpackedPtr<SurfaceDescriptor> unpacked;
if (ConsumedError(ValidateSurfaceDescriptor(this, descriptor), &unpacked)) {
return ReturnToAPI(Surface::MakeError(this));
}
return ReturnToAPI(AcquireRef(new Surface(this, unpacked)));
}
const std::unordered_set<tint::wgsl::LanguageFeature>&
InstanceBase::GetAllowedWGSLLanguageFeatures() const {
return mTintLanguageFeatures;
}
void InstanceBase::GatherWGSLFeatures(const DawnWGSLBlocklist* wgslBlocklist) {
for (auto wgslFeature : tint::wgsl::kAllLanguageFeatures) {
// Skip over testing features if we don't have the toggle to expose them.
if (!mToggles.IsEnabled(Toggle::ExposeWGSLTestingFeatures)) {
switch (wgslFeature) {
case tint::wgsl::LanguageFeature::kChromiumTestingUnimplemented:
case tint::wgsl::LanguageFeature::kChromiumTestingUnsafeExperimental:
case tint::wgsl::LanguageFeature::kChromiumTestingExperimental:
case tint::wgsl::LanguageFeature::kChromiumTestingShippedWithKillswitch:
case tint::wgsl::LanguageFeature::kChromiumTestingShipped:
continue;
default:
break;
}
}
// Expose the feature depending on its status and allow_unsafe_apis.
bool enable = false;
switch (tint::wgsl::GetLanguageFeatureStatus(wgslFeature)) {
case tint::wgsl::FeatureStatus::kUnknown:
case tint::wgsl::FeatureStatus::kUnimplemented:
enable = false;
break;
case tint::wgsl::FeatureStatus::kUnsafeExperimental:
enable = mToggles.IsEnabled(Toggle::AllowUnsafeAPIs);
break;
case tint::wgsl::FeatureStatus::kExperimental:
enable = mToggles.IsEnabled(Toggle::AllowUnsafeAPIs) ||
mToggles.IsEnabled(Toggle::ExposeWGSLExperimentalFeatures);
break;
case tint::wgsl::FeatureStatus::kShippedWithKillswitch:
case tint::wgsl::FeatureStatus::kShipped:
enable = true;
break;
}
if (enable) {
mWGSLFeatures.emplace(ToWGPUFeature(wgslFeature));
mTintLanguageFeatures.emplace(wgslFeature);
}
}
// Remove blocklisted features.
if (wgslBlocklist != nullptr) {
for (size_t i = 0; i < wgslBlocklist->blocklistedFeatureCount; i++) {
const char* name = wgslBlocklist->blocklistedFeatures[i];
tint::wgsl::LanguageFeature tintFeature = tint::wgsl::ParseLanguageFeature(name);
wgpu::WGSLFeatureName feature = ToWGPUFeature(tintFeature);
// Ignore unknown features in the blocklist.
if (feature == wgpu::WGSLFeatureName::Undefined) {
continue;
}
mTintLanguageFeatures.erase(tintFeature);
mWGSLFeatures.erase(feature);
}
}
}
bool InstanceBase::APIHasWGSLLanguageFeature(wgpu::WGSLFeatureName feature) const {
return mWGSLFeatures.contains(feature);
}
size_t InstanceBase::APIEnumerateWGSLLanguageFeatures(wgpu::WGSLFeatureName* features) const {
if (features != nullptr) {
for (wgpu::WGSLFeatureName f : mWGSLFeatures) {
*features = f;
++features;
}
}
return mWGSLFeatures.size();
}
} // namespace dawn::native