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Copyright 2020-2022 Matias N. Goldberg

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.

This software uses code from:

  • GPURealTimeBC6H, under public domain. Modifications by Matias N. Goldberg
  • rg-etc1, Copyright (c) 2012 Rich Geldreich, zlib license. Extensive modifications by Matias N. Goldberg to adapt it as a compute shader
  • stb_dxt, under dual-license: A. MIT License Copyright (c) 2017 Sean Barrett, B. Public Domain (www.unlicense.org). Original by fabian "ryg" giesen - ported to C by stb. Modifications by Matias N. Goldberg to adapt it as a compute shader
  • EAC loosely inspired on etc2_encoder, Copyright (C) 2014 Jean-Philippe ANDRE, 2-clause BSD license
  • ETC2 T & H modes based on etc2_encoder, Copyright (C) 2014 Jean-Philippe ANDRE, 2-clause BSD license. A couple minor bugfixes applied by Matias N. Goldberg. Modifications made by Matias N. Goldberg to adapt it as a compute shader
  • ETC2 P very loosely based on etc2_encoder, Copyright (C) 2014 Jean-Philippe ANDRE, 2-clause BSD license. Considerable rewrite by Matias N. Goldberg to enhance its quality.