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// 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 "utils/BackendBinding.h"
#include "common/Assert.h"
#include "dawn_native/NullBackend.h"
#include <memory>
namespace utils {
class NullBinding : public BackendBinding {
public:
NullBinding(GLFWwindow* window, WGPUDevice device) : BackendBinding(window, device) {
}
uint64_t GetSwapChainImplementation() override {
if (mSwapchainImpl.userData == nullptr) {
mSwapchainImpl = dawn_native::null::CreateNativeSwapChainImpl();
}
return reinterpret_cast<uint64_t>(&mSwapchainImpl);
}
WGPUTextureFormat GetPreferredSwapChainTextureFormat() override {
return WGPUTextureFormat_RGBA8Unorm;
}
private:
DawnSwapChainImplementation mSwapchainImpl = {};
};
BackendBinding* CreateNullBinding(GLFWwindow* window, WGPUDevice device) {
return new NullBinding(window, device);
}
} // namespace utils