text: // 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.
  
  #ifndef UTILS_BACKENDBINDING_H_
  #define UTILS_BACKENDBINDING_H_
  
  #include "dawn/native/DawnNative.h"
  #include "dawn/webgpu_cpp.h"
  
  struct GLFWwindow;
  
  namespace utils {
  
      class BackendBinding {
        public:
          virtual ~BackendBinding() = default;
  
          virtual uint64_t GetSwapChainImplementation() = 0;
          virtual WGPUTextureFormat GetPreferredSwapChainTextureFormat() = 0;
  
        protected:
          BackendBinding(GLFWwindow* window, WGPUDevice device);
  
          GLFWwindow* mWindow = nullptr;
          WGPUDevice mDevice = nullptr;
      };
  
      void DiscoverAdapter(dawn::native::Instance* instance,
                           GLFWwindow* window,
                           wgpu::BackendType type);
      BackendBinding* CreateBinding(wgpu::BackendType type, GLFWwindow* window, WGPUDevice device);
  
  }  // namespace utils
  
  #endif  // UTILS_BACKENDBINDING_H_
  