The AI upscaler in Wallgami is the unmodified official macOS build of Real-ESRGAN's
realesrgan-ncnn-vulkan, release v0.2.5.0 (20220424), with its realesrgan-x4plus model:

  https://github.com/xinntao/Real-ESRGAN/releases/download/v0.2.5.0/realesrgan-ncnn-vulkan-20220424-macos.zip
    sha256 e0ad05580abfeb25f8d8fb55aaf7bedf552c375b5b4d9bd3c8d59764d2cc333a

re-signed by Wallgami's developer so macOS will run it inside a notarized app. Only the
program and the one model Wallgami uses are taken from the archive. Sources:

  realesrgan-ncnn-vulkan   https://github.com/xinntao/Real-ESRGAN-ncnn-vulkan (v0.2.0)   MIT
  Real-ESRGAN (the model)  https://github.com/xinntao/Real-ESRGAN (v0.2.5.0)            BSD-3-Clause
  ncnn                     https://github.com/Tencent/ncnn                              BSD-3-Clause and others
  glslang                  https://github.com/KhronosGroup/glslang                      see its licence
  libwebp                  https://chromium.googlesource.com/webm/libwebp               BSD-3-Clause, patent grant
  stb_image                https://github.com/nothings/stb                              MIT or public domain
  MoltenVK 1.1.1, with SPIRV-Cross, SPIRV-Tools and Vulkan-Headers
                           https://github.com/KhronosGroup/MoltenVK                     Apache-2.0
  cereal                   https://github.com/USCiLab/cereal                            BSD-3-Clause
  LLVM OpenMP 11.0.0       https://github.com/llvm/llvm-project/tree/llvmorg-11.0.0/openmp
                                                                                        Apache-2.0 with LLVM exception

All of them are linked into the one executable. Their licence texts are beside this file.
Apache-2.0.txt is the licence of MoltenVK, SPIRV-Cross, SPIRV-Tools and Vulkan-Headers.

The realesrgan-x4plus weights are published with Real-ESRGAN under its BSD-3-Clause
licence, with no terms of their own.
