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Copyright (c) 2023 Snap Inc.

This sample code is made available by Snap Inc. for non-commercial, academic purposes only. Academic purposes mean solely for study, instruction, or non-commercial research, testing, or validation. Non-commercial means not primarily intended for or directed towards commercial advantage or monetary compensation. No commercial license, whether implied or otherwise, is granted in or to this code (including any rights to copy, modify, publish, distribute and/or commercialize this code), unless you have entered into a separate agreement with Snap Inc. for such rights.

This sample code is provided as-is, without warranty of any kind, express or implied, including any warranties of merchantability, title, fitness for a particular purpose, non-infringement, or that the code is free of defects, errors or viruses. In no event will Snap Inc. be liable for any damages or losses of any kind arising from this sample code or your use thereof.

Any redistribution of this sample code, including in binary form, must retain or reproduce the above copyright notice, conditions, and disclaimer.

Questions? Please email opensource@snap.com.

The following sets forth attribution notices for third party software that may be included in portions of this source code.

--------------------------- License for Hammer --------------------------------

GitHub: https://github.com/bytedance/Hammer

Copyright (c) 2022 ByteDance, Inc.

MIT License

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED AS IS, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

---------- LICENSE for custom CUDA kernels in StyleGAN2 and StyleGAN3 ----------

GitHub: https://github.com/NVlabs/stylegan3

Copyright (c) 2021, NVIDIA Corporation. All rights reserved.

NVIDIA Source Code License

=======================================================================

  1. Definitions

"Licensor" means any person or entity that distributes its Work.

"Software" means the original work of authorship made available under this License.

"Work" means the Software and any additions to or derivative works of the Software that are made available under this License.

The terms "reproduce," "reproduction," "derivative works," and "distribution" have the meaning as provided under U.S. copyright law; provided, however, that for the purposes of this License, derivative works shall not include works that remain separable from, or merely link (or bind by name) to the interfaces of, the Work.

Works, including the Software, are "made available" under this License by including in or with the Work either (a) a copyright notice referencing the applicability of this License to the Work, or (b) a copy of this License.

  1. License Grants

    2.1 Copyright Grant. Subject to the terms and conditions of this License, each Licensor grants to you a perpetual, worldwide, non-exclusive, royalty-free, copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense and distribute its Work and any resulting derivative works in any form.

  2. Limitations

    3.1 Redistribution. You may reproduce or distribute the Work only if (a) you do so under this License, (b) you include a complete copy of this License with your distribution, and (c) you retain without modification any copyright, patent, trademark, or attribution notices that are present in the Work.

    3.2 Derivative Works. You may specify that additional or different terms apply to the use, reproduction, and distribution of your derivative works of the Work ("Your Terms") only if (a) Your Terms provide that the use limitation in Section 3.3 applies to your derivative works, and (b) you identify the specific derivative works that are subject to Your Terms. Notwithstanding Your Terms, this License (including the redistribution requirements in Section 3.1) will continue to apply to the Work itself.

    3.3 Use Limitation. The Work and any derivative works thereof only may be used or intended for use non-commercially. Notwithstanding the foregoing, NVIDIA and its affiliates may use the Work and any derivative works commercially. As used herein, "non-commercially" means for research or evaluation purposes only.

    3.4 Patent Claims. If you bring or threaten to bring a patent claim against any Licensor (including any claim, cross-claim or counterclaim in a lawsuit) to enforce any patents that you allege are infringed by any Work, then your rights under this License from such Licensor (including the grant in Section 2.1) will terminate immediately.

    3.5 Trademarks. This License does not grant any rights to use any Licensor’s or its affiliates’ names, logos, or trademarks, except as necessary to reproduce the notices described in this License.

    3.6 Termination. If you violate any term of this License, then your rights under this License (including the grant in Section 2.1) will terminate immediately.

  3. Disclaimer of Warranty.

THE WORK IS PROVIDED "AS IS" WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WARRANTIES OR CONDITIONS OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE OR NON-INFRINGEMENT. YOU BEAR THE RISK OF UNDERTAKING ANY ACTIVITIES UNDER THIS LICENSE.

  1. Limitation of Liability.

EXCEPT AS PROHIBITED BY APPLICABLE LAW, IN NO EVENT AND UNDER NO LEGAL THEORY, WHETHER IN TORT (INCLUDING NEGLIGENCE), CONTRACT, OR OTHERWISE SHALL ANY LICENSOR BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF OR RELATED TO THIS LICENSE, THE USE OR INABILITY TO USE THE WORK (INCLUDING BUT NOT LIMITED TO LOSS OF GOODWILL, BUSINESS INTERRUPTION, LOST PROFITS OR DATA, COMPUTER FAILURE OR MALFUNCTION, OR ANY OTHER COMMERCIAL DAMAGES OR LOSSES), EVEN IF THE LICENSOR HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

----------------------------- LICENSE for GenForce -----------------------------

Copyright (c) 2020 GenForce

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.