| // Copyright 2019 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/opengl/BackendGL.h" |
| |
| #include <utility> |
| |
| #include "dawn/native/OpenGLBackend.h" |
| #include "dawn/native/opengl/AdapterGL.h" |
| |
| namespace dawn::native::opengl { |
| |
| // Implementation of the OpenGL backend's BackendConnection |
| |
| Backend::Backend(InstanceBase* instance, wgpu::BackendType backendType) |
| : BackendConnection(instance, backendType) {} |
| |
| std::vector<Ref<AdapterBase>> Backend::DiscoverDefaultAdapters() { |
| // The OpenGL backend needs at least "getProcAddress" to discover an adapter. |
| return {}; |
| } |
| |
| ResultOrError<std::vector<Ref<AdapterBase>>> Backend::DiscoverAdapters( |
| const AdapterDiscoveryOptionsBase* optionsBase) { |
| // TODO(cwallez@chromium.org): For now only create a single OpenGL adapter because don't |
| // know how to handle MakeCurrent. |
| DAWN_INVALID_IF(mCreatedAdapter, "The OpenGL backend can only create a single adapter."); |
| |
| ASSERT(static_cast<wgpu::BackendType>(optionsBase->backendType) == GetType()); |
| const AdapterDiscoveryOptions* options = |
| static_cast<const AdapterDiscoveryOptions*>(optionsBase); |
| |
| DAWN_INVALID_IF(options->getProc == nullptr, "AdapterDiscoveryOptions::getProc must be set"); |
| |
| Ref<Adapter> adapter = AcquireRef( |
| new Adapter(GetInstance(), static_cast<wgpu::BackendType>(optionsBase->backendType))); |
| DAWN_TRY(adapter->InitializeGLFunctions(options->getProc)); |
| DAWN_TRY(adapter->Initialize()); |
| |
| mCreatedAdapter = true; |
| std::vector<Ref<AdapterBase>> adapters{std::move(adapter)}; |
| return std::move(adapters); |
| } |
| |
| BackendConnection* Connect(InstanceBase* instance, wgpu::BackendType backendType) { |
| return new Backend(instance, backendType); |
| } |
| |
| } // namespace dawn::native::opengl |