| // Copyright 2018 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. |
| |
| #ifndef DAWNNATIVE_DAWNNATIVE_H_ |
| #define DAWNNATIVE_DAWNNATIVE_H_ |
| |
| #include <dawn/dawn.h> |
| #include <dawn_native/dawn_native_export.h> |
| |
| #include <string> |
| #include <vector> |
| |
| namespace dawn_native { |
| |
| struct PCIInfo { |
| uint32_t deviceId = 0; |
| uint32_t vendorId = 0; |
| std::string name; |
| }; |
| |
| enum class BackendType { |
| D3D12, |
| Metal, |
| Null, |
| OpenGL, |
| Vulkan, |
| }; |
| |
| enum class DeviceType { |
| DiscreteGPU, |
| IntegratedGPU, |
| CPU, |
| Unknown, |
| }; |
| |
| class InstanceBase; |
| class AdapterBase; |
| |
| // An optional parameter of Adapter::CreateDevice() to send additional information when creating |
| // a Device. For example, we can use it to enable a workaround, optimization or feature. |
| struct DAWN_NATIVE_EXPORT DeviceDescriptor { |
| std::vector<const char*> forceEnabledToggles; |
| std::vector<const char*> forceDisabledToggles; |
| }; |
| |
| // A struct to record the information of a toggle. A toggle is a code path in Dawn device that |
| // can be manually configured to run or not outside Dawn, including workarounds, special |
| // features and optimizations. |
| struct ToggleInfo { |
| const char* name; |
| const char* description; |
| const char* url; |
| }; |
| |
| // An adapter is an object that represent on possibility of creating devices in the system. |
| // Most of the time it will represent a combination of a physical GPU and an API. Not that the |
| // same GPU can be represented by multiple adapters but on different APIs. |
| // |
| // The underlying Dawn adapter is owned by the Dawn instance so this class is not RAII but just |
| // a reference to an underlying adapter. |
| class DAWN_NATIVE_EXPORT Adapter { |
| public: |
| Adapter(); |
| Adapter(AdapterBase* impl); |
| ~Adapter(); |
| |
| BackendType GetBackendType() const; |
| DeviceType GetDeviceType() const; |
| const PCIInfo& GetPCIInfo() const; |
| |
| explicit operator bool() const; |
| |
| // Create a device on this adapter, note that the interface will change to include at least |
| // a device descriptor and a pointer to backend specific options. |
| // On an error, nullptr is returned. |
| DawnDevice CreateDevice(const DeviceDescriptor* deviceDescriptor = nullptr); |
| |
| private: |
| AdapterBase* mImpl = nullptr; |
| }; |
| |
| // Base class for options passed to Instance::DiscoverAdapters. |
| struct DAWN_NATIVE_EXPORT AdapterDiscoveryOptionsBase { |
| public: |
| const BackendType backendType; |
| |
| protected: |
| AdapterDiscoveryOptionsBase(BackendType type); |
| }; |
| |
| // Represents a connection to dawn_native and is used for dependency injection, discovering |
| // system adapters and injecting custom adapters (like a Swiftshader Vulkan adapter). |
| // |
| // This is an RAII class for Dawn instances and also controls the lifetime of all adapters |
| // for this instance. |
| class DAWN_NATIVE_EXPORT Instance { |
| public: |
| Instance(); |
| ~Instance(); |
| |
| Instance(const Instance& other) = delete; |
| Instance& operator=(const Instance& other) = delete; |
| |
| // Gather all adapters in the system that can be accessed with no special options. These |
| // adapters will later be returned by GetAdapters. |
| void DiscoverDefaultAdapters(); |
| |
| // Adds adapters that can be discovered with the options provided (like a getProcAddress). |
| // The backend is chosen based on the type of the options used. Returns true on success. |
| bool DiscoverAdapters(const AdapterDiscoveryOptionsBase* options); |
| |
| // Returns all the adapters that the instance knows about. |
| std::vector<Adapter> GetAdapters() const; |
| |
| const ToggleInfo* GetToggleInfo(const char* toggleName); |
| |
| private: |
| InstanceBase* mImpl = nullptr; |
| }; |
| |
| // Backend-agnostic API for dawn_native |
| DAWN_NATIVE_EXPORT DawnProcTable GetProcs(); |
| |
| // Query the names of all the toggles that are enabled in device |
| DAWN_NATIVE_EXPORT std::vector<const char*> GetTogglesUsed(DawnDevice device); |
| |
| } // namespace dawn_native |
| |
| #endif // DAWNNATIVE_DAWNNATIVE_H_ |