// 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.

// OpenGLBackend.cpp: contains the definition of symbols exported by OpenGLBackend.h so that they
// can be compiled twice: once export (shared library), once not exported (static library)

#include "dawn/native/OpenGLBackend.h"

#include "dawn/common/SwapChainUtils.h"
#include "dawn/native/opengl/DeviceGL.h"
#include "dawn/native/opengl/NativeSwapChainImplGL.h"

namespace dawn::native::opengl {

AdapterDiscoveryOptions::AdapterDiscoveryOptions()
    : AdapterDiscoveryOptionsBase(WGPUBackendType_OpenGL) {}

AdapterDiscoveryOptionsES::AdapterDiscoveryOptionsES()
    : AdapterDiscoveryOptionsBase(WGPUBackendType_OpenGLES) {}

DawnSwapChainImplementation CreateNativeSwapChainImpl(WGPUDevice device,
                                                      PresentCallback present,
                                                      void* presentUserdata) {
    Device* backendDevice = ToBackend(FromAPI(device));

    DawnSwapChainImplementation impl;
    impl = CreateSwapChainImplementation(
        new NativeSwapChainImpl(backendDevice, present, presentUserdata));
    impl.textureUsage = WGPUTextureUsage_Present;

    return impl;
}

WGPUTextureFormat GetNativeSwapChainPreferredFormat(const DawnSwapChainImplementation* swapChain) {
    NativeSwapChainImpl* impl = reinterpret_cast<NativeSwapChainImpl*>(swapChain->userData);
    return static_cast<WGPUTextureFormat>(impl->GetPreferredFormat());
}

ExternalImageDescriptorEGLImage::ExternalImageDescriptorEGLImage()
    : ExternalImageDescriptor(ExternalImageType::EGLImage) {}

WGPUTexture WrapExternalEGLImage(WGPUDevice device,
                                 const ExternalImageDescriptorEGLImage* descriptor) {
    Device* backendDevice = ToBackend(FromAPI(device));
    TextureBase* texture =
        backendDevice->CreateTextureWrappingEGLImage(descriptor, descriptor->image);
    return ToAPI(texture);
}

}  // namespace dawn::native::opengl