% LICENSING CONDITIONS FOR THE PSYCHTOOLBOX-3 DISTRIBUTION:
% ---------------------------------------------------------
%
% Psychtoolbox-3 is a distribution of a combination of many different
% materials.
%
% Different components in the distribution are contributed by different
% individuals or companies and provided to you under different licenses and
% terms of use.
%
% In a nutshell:
% --------------
%
% *All* of the material in the distribution is free for you to use, free of
% charge, for non-commercial, personal or research use in accordance with
% its license.
%
% *Almost all* of the material, with a few exceptions, is so called
% free and open-source software (FOSS), according to the OSI definition of
% Open Source (www.opensource.org), licensed to you under a OSI approved
% open-source and/or free-software license. Therefore, for most material
% you are also allowed to use, modify, merge with other software,
% sub-license, create derivative works of, and distribute the material, for
% commercial or non-commercial purposes, as long as you abide to the
% licensing conditions and terms of use of the licenses associated with the
% different materials.
%
% The subset of material which may only be used freely for non-commercial
% purposes, but is not neccessarily covered by a free software or open
% source license, can be found in the Psychtoolbox/PsychContributed
% subfolder. Each component is associated with some sort of a license or
% terms of use.
%
% All material outside that folder is licensed under some free-software or
% open-source software license.
%
% You can find the full, legally binding text of most of the used licenses
% in the appendix of this text file. If a license text is missing, please
% report this omission to us and meanwhile look up the definition of the
% license at http://www.opensource.org.
%
% The following non-exhaustive list (see below) describes which submodules
% and materials in the distribution are covered by which licenses. If some
% material isn't listed here, then a license or copyright may be attached
% to, or mentioned in the material or its accompanying documentation
% itself, e.g., in the source code of a M-File, script, GLSL shader file or
% C programming language file. If material doesn't come with any individual
% license or copyright attached and it isn't listed here, you can assume it
% is licensed to you under terms of the following very permissive MIT
% open-source license, with the following copyright:
%
% Copyright (c) The individual Psychtoolbox core developers:
%           (c) 1996-2022, David Brainard <brainard@psych.upenn.edu>
%           (c) 1996-2022, Denis Pelli    <denis.pelli@nyu.edu>
%           (c) 1996-2007, Allen Ingling  <allen.ingling@nyu.edu>
%           (c) 2005-2023, Mario Kleiner  <mario.kleiner.de@gmail.com>
%
%           (c) Individual major contributors:
%           (c) 2006       Richard F. Murray <rfm@yorku.ca>
%           (c) 2008-2022  Diederick C. Niehorster <dcnieho@gmail.com>
%           (c) 2013-2022  Ian Andolina
%           (c) 2008-2011  Tobias Wolf <towolf@tuebingen.mpg.de>
%
% 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.
%
%
% List of submodules with their associated licenses, as far as they deviate
% from the MIT license printed above, and their main authors:
%
% Psychtoolbox/PsychSound: portaudio_x64.dll
%
% The PsychPortAudio driver on Microsoft Windows dynamically loads
% a DLL, the "portaudio_x64.dll" from the Psychtoolbox/PsychSound/ subfolder.
% The PsychPortAudio driver on macOS statically links against libportaudio_osx_64.a,
% whereas the driver on Linux dynamically links against system-provided versions of
% libportaudio.so.
% The Windows DLL and macOS static library are compiled from the open-source MIT
% licensed PortAudio library from http://portaudio.com - The specific license text is
% included below in the licenses section.
%
%
% Psychtoolbox/PsychContributed: See individual licenses and output of
%                                "help PsychContributed" in that folder.
%
% Psychtoolbox/PsychHardware/LinuxDrivers/ modified versions of Linux device
% drivers, currently XOrg video drivers (DDX modules). These have their own
% licenses attached as part of their source code or Readme files. But usually
% some form of the MIT/X11 license. Check the sources for details.
%
% The tcp_udp_ip toolbox under Psychtoolbox/PsychHardware/iViewXToolbox/tcp_udp_ip/
% is Copyright Peter Rydesaeter et al., 1998-2003. Licensed under GPL v2 and
% later, with special linking exception for linking against non-free
% software. See its included license.txt file for details. Contains also
% special low-latency enhancements to the pnet mex file by Mario Kleiner.
%
% The Bitsplustoolbox     - MIT license : David Brainard et al., Mario Kleiner.
%
% The iViewXToolbox       - MIT license : Frans W. Cornelissen.
%
% The Eyelink toolbox     - MIT license : Frans Cornelissen, Enno Peters,
%                           John Palmer, Chris Burns, Mario Kleiner, Erik
%                           Flister, Nuha Jabakhanji on behalf of
%                           SR-Research.
%
% The Datapixx toolbox    - LGPL license : Peter April VPixx Inc., Mario Kleiner.
%
% The Daq toolbox         - MIT : Denis Pelli, Mickey P. Rowe, Mario Kleiner.
%
% The PsychVulkanCore driver mex file for our Vulkan display backend, which is
% itself licensed under the MIT license, builds against the Khronos Vulkan SDK C
% header files, which are licensed under MIT and Apache 2.0 license. See
% https://github.com/KhronosGroup/Vulkan-Headers
% It dynamically links against the Khronos Vulkan loader libraries on Linux and
% MS-Windows, which are licensed under the Apache 2.0 license. The loader libraries
% are part of the operating system on Linux, and part of / bundled with the
% graphics drivers on MS-Windows. The Vulkan loader then runtime loads and links
% and interfaces with graphics hardware specific system installed Vulkan ICDs.
% See https://github.com/KhronosGroup/Vulkan-Loader
% On macOS our driver is statically linked against the Khronos MoltenVK Vulkan
% ICD libMoltenVK.a, which implements Vulkan on top of macOS Metal frameworks.
% MoltenVK is also licensed under the Apache 2.0 license. See
% https://github.com/KhronosGroup/MoltenVK
%
% The PsychVRToolbox   - MIT : Mario Kleiner. The following terms and licenses
% apply for the Oculus VR platform drivers contained in the PsychVRToolbox:
% [Note: Oculus VR's trademarks, e.g., Oculus, Oculus Rift, etc. are registered trademarks
% owned by Oculus VR, LLC].
%
% The PsychOculusVRCore mex file for use of old developer editions of Oculus VR
% virtual reality devices on all supported operating systems (Linux, Windows, macOS
% for Intel compatible PC's), ie. the Oculus Rift DK1 and Oculus Rift DK2, is built using
% the Oculus SDK v0.5, and statically links against portions of the SDK. That SDK is:
%
% "Copyright © 2014 Oculus VR, LLC. All rights reserved.”
%
% The full text of the Oculus license can be found in the
% Psychtoolbox/PsychHardware/PsychVRToolbox/ subfolder of Psychtoolbox under
% the filename “LICENSE_OculusSDK0.5.txt”.
%
% Copies of the SDKs useable for building the PsychOculusVRCore mex file from
% source can be found in the PsychSourceGL/Cohorts/OculusSDK/ subfolder of
% the Psychtoolbox source distribution (see help UseTheSource for download).
%
% The PsychDocumentation folder includes a PDF with “Health and safety warnings”
% related to the Oculus Rift devices, named Oculus_Health_and_Safety_Warnings.pdf,
% which is also "Copyright © 2014 Oculus VR, LLC. All rights reserved.”
%
% The PsychOculusVRCore1 mex file for use of (consumer) editions of Oculus VR
% virtual reality devices which are compatible with the Oculus runtime v1 on
% supported platforms (currently MS-Windows), e.g., the Oculus Rift CV1, is built
% using the Oculus SDK v1.16+, and statically links against portions of the SDK,
% as allowed by the SDK's license. That SDK is:
%
% “Copyright © Facebook Technologies, LLC and its affiliates. All rights reserved.”
%
% The full text of the Oculus SDK v1 license, which contains the terms of use for your
% use of the SDK/driver and for redistribution of the PsychOculusVRCore1 mex file can
% be found in the Psychtoolbox/PsychHardware/PsychVRToolbox/ subfolder of Psychtoolbox
% under the filename “LICENSE_OculusSDK1.txt”.
%
% The different VR high-level drivers indirectly use the function qGetR().
% The qGetR.m file for converting a rotation/orientation Quaternion into a
% 3x3 RHS rotation matrix is a modified version of qGetR from the "quaternion"
% package of  Przemyslaw Baranski downloaded from Mathworks File Exchange at URL:
%
% http://de.mathworks.com/matlabcentral/fileexchange/35475-quaternions
%
% The file and its parent toolbox are licensed under BSD License, with
% Copyright (c) 2012, Przemyslaw Baranski. The full license text is included
% in the qGetR.m file in Psychtoolbox/PsychOpenGL/qGetR.m
%
% The PsychOpenHMDVRCore mex driver for VR HMD's, which is licensed under MIT license,
% uses OpenHMD for control of the VR devices: https://github.com/OpenHMD/OpenHMD
% OpenHMD is licensed under the Boost 1.0 software license, included below.
%
% Our MIT licensed PsychOpenXRCore mex driver builds against the Khronos OpenXR SDK
% public headers, and links (dynamically on Linux, statically on Windows) against the
% OpenXR open-source dynamic loader, to implement the interface to a system-installed
% OpenXR runtime. See https://www.khronos.org/openxr for information about OpenXR.
% These components are dual-licensed by Khronos under Apache 2.0 and MIT license, copies
% of which can be found below: SPDX license identifier "Apache-2.0 OR MIT"
% You can find the source code for the SDK and loader under:
% https://github.com/KhronosGroup/OpenXR-SDK
%
% For some experimental Monado specific timestamping implementation, the driver currently
% also contains a statically included copy of the nanopb protobuffer parsing library
% (URL: https://jpa.kapsi.fi/nanopb) which is licensed under the zLib license, and statically
% included copies of some files from the FOSS Monado OpenXR runtime from https://monado.freedesktop.org,
% which are licensed under the Boost Software License BSL-1.0 - SPDX-License-Identifier: BSL-1.0.
% These statically included files can be found in the nanopb subfolder of the PsychOpenXRCore
% source folder, with detailed copyright and license information included.
%
% Our Virtual Reality (VR) drivers for OpenHMD and OpenXR supported HTC VR headsets
% with eye gaze tracking hardware also support more advanced eye gaze tracking by
% use of our SRAnipalMex mex file for 64-Bit Windows 10 and later. This is only
% supported on MS-Windows. The mex file uses the HTC SRAnipal SDK for interfacing
% with the HTC eye trackers SRAnipal runtime. The license text for the SRAnipal SDK
% can be found below in the section of individual licenses under the subsection
% "The HTC SRAnipal SDK license".
%
% Support for NVidia NVision stereo emitter/stereo goggles under Linux is
% implemented by use of libnvstusb from http://sourceforge.net/projects/libnvstusb/
% This library is licensed under LGPLv2 license. The source code for our
% binary build can be found in the PsychSourceGL/Cohorts/libnvstusb-code-32
% subfolder of the PTB source distribution.
%
% Matlab/Octave to OpenGL wrapper MOGL - MIT license : Richard F. Murray, Mario Kleiner.
% MOGL moglcore for MS-Windows links dynamically against the freeglut library, which is
% Copyright (c) 1999-2000 Pawel W. Olszta, licensed to us under compatible MIT/X11 license.
% The source code and license file can be found in PsychSourceGL/Cohorts/freeglut.zip.
% The license itself can be found in Psychtoolbox/PsychOpenGL/MOGL/core/Copying-freeglut.txt
%
% Matlab/Octave to OpenAL wrapper MOAL - MIT license : Richard F. Murray, Mario Kleiner.
%
% GLSL shaders for the OpenGL GLSL.m demo from the "Orange book" are
% Copyright (C) 2002-2006  3Dlabs Inc. Ltd., licensed under a BSD-3 style
% license. See file: PsychDemos/OpenGL4MatlabDemos/GLSLDemoShaders/3Dlabs-License.txt
%
% GLSL shaders for Perlin noise: - MIT license, Copyright (C) 2011 Ashima Arts and
%                                  Copyright (c) 2011 Stefan Gustavson.
%                                  Files from https://github.com/ashima/webgl-noise
%                                  With minimal modifications for PTB by Mario Kleiner.
%
% All other OpenGL GLSL shaders - MIT license : Mario Kleiner.
%
% All OpenCL compute shaders    - MIT license : tbd.
% All scripts and text files    - MIT license, unless otherwise stated in
% or other documentation          the material itself.
%
% The PsychtoolboxKernelDriver.kext - MIT license : Mario Kleiner.
%
% Screen MEX file:
%
% Screen statically includes the "tinyexr" library for reading some common OpenEXR
% HDR image file formats via the Screen('ReadHDRImage') subfunction. tinyexr is
% licensed under the MIT compatible BSD-3 license - see below for exact licensing
% text. tinyexr includes bits of OpenEXR, which are also included under BSD-3
% license - see below for exact licensing text. The upstream tinyexr source code
% and documentation can be found at: https://github.com/syoyo/tinyexr
%
% Screen statically includes modified helper code for computation of color space
% conversion matrices as part of our movie playback engine, to adapt the movies
% source color space to the onscreen windows color space, at least in pixelformat
% 11 mode (HDR). The sample code was provided under an MIT compatible and very
% liberal open-source license by Ryan Juckett http://www.ryanjuckett.com. Thanks!
%
% Screen on Linux, when compiled for multiple graphics and display
% backends, typically on embedded devices, utilizes Chad Versaces
% excellent Waffle display library, which is copyright and funded by
% Intel, licensed to us under a compatible OSS license - see below for
% exact licensing text: http://people.freedesktop.org/~chadversary/waffle/
%
% Screen on Linux statically includes the client library "gamemode_client.h"
% implemented in said header file. This library is copyright Feral Interactive
% and licensed under the BSD 3-Clause "New" or "Revised" License. The full
% license text can be found below and in gamemode_client.h itself. We use the
% gamemode package for automatic performance tuning of the Linux system. See:
% https://github.com/FeralInteractive/gamemode
%
% Screen on macOS includes code for display brightness control that was adapted
% from the BSD-2 licensed work of Nicholas Riley at https://github.com/nriley/brightness
%
% Screen on macOS, to work around various awful bugs in Apples trainwreck, includes
% an adapted version of the code from https://github.com/lunixbochs/meta/tree/master/utils/retina
% That code is Copyright (c) 2013 Ryan Hileman and provided to us and others under the MIT
% license. Thanks!
%
% PsychCV MEX file:
%
% Individual source files are under MIT (core code), BSD-3 (svd used by OpenEyes),
% or GPL v2+ (OpeEyes derived code) license. Various authors - See individual licenses in
% source code.
%
% For the compiled PsychCV MEX file, the license depends on the specific build configuration:
%
% - The default configuration, with only libapriltag support enabled for AprilTag marker
%   tracking, uses MIT code written by us, and dynamically links against a system installed
%   libapriltag library, which itself is BSD-2 licensed. See license text below.
%
% - If compiled with a non-default configuration, which would use statically included
%   derived code from OpenEyes, and/or a statically linked version of libARToolkit v1
%   (code included in the PsychSourceGL/Cohorts/ARToolkit subfolder), would be GPL v2+
%   licensed, and could be only used with GNU/Octave (GPL v3+) as host runtime, not with
%   Matlab. We do not ship this configuration with Psychtoolbox to avoid all the GPL v2+
%   license complexity, and most likely will remove all that code completely in the future.
%
%
% All other MEX files     - All compiled binaries and most source code under
%                           MIT license. Some bits of source code include X11
%                           or BSD licensed code, compatible with the MIT
%                           license. See individual source files for
%                           details. Many MEX files link dynamically
%                           against free software / open-source libraries.
%                           Static linking happens against some MIT/X11/BSD
%                           licensed code, whose copyright/license is
%                           included in the source code itself. In case of
%                           dynamic linking, typically against BSD, MIT or
%                           LGPL code, if the license does require
%                           redistribution of source code, these libraries
%                           can be found in the PsychSourceGL/Cohorts/
%                           subfolder of the Psychtoolbox C source code
%                           download. See "help UseTheSource" for info on
%                           how to get access to this source code.
%
% All other M-Files       - MIT license unless otherwise noted in the files
%                           themselves.
%
% The earth surface JPEG-image used in MinimalisticOpenGLDemo.m is taken
% from the Linux/KDE application kdeworldclock. kdeworldclock and its
% components are licensed under GPL v2+.
%
% The "Heart logo" of Gratipay in the startup splash screen is taken
% from www.gratipay.com. They permit free use of their materials
% (See "Terms and Conditions" section, section "Disclaimer of copyright")
% by attributing their material to the public domain under the
% "CC0 1.0 Universal Public Domain Dedication"
% (http://creativecommons.org/publicdomain/zero/1.0/) - Thanks!
%
%
% The PsychDemos/OpenEXRImages/ subfolder contains sample OpenEXR HDR images
% freely provided by https://github.com/AcademySoftwareFoundation/openexr-images
% These are copyright  included under the MIT compatible BSD-3 license. See below for
% exact license text. Also see "help OpenEXRImages". Thanks!
%
% All other image files and movie files     - MIT license.
%
% All sound files in PsychDemos/Soundfiles/ - LGPL license. See file
%                                             COPYING in that folder for details.
%
% The image of the cute, confused looking frog in our Welcome splash screen is
% from pixabay, which provides this artwork under the "Pixabay license", ie.
% free for commerical use, no attribution necessary, but appreciated. Thanks! 
% https://pixabay.com/vectors/frog-green-animal-amphibian-48234/ 
% "Simplified Pixabay License" at https://pixabay.com/service/license/ attached
% below.
%
%
% APPENDIX: The different licenses in detail:
% ===========================================
%
% These are the legally binding license texts, which describe your rights
% and obligations if you choose to use or redistribute a component under a
% given license.
%
%
%
% The 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.
%
%
% =========================================================================
%
%
% The BSD 3-Clause License:
%
% Redistribution and use in source and binary forms, with or without
% modification, are permitted provided that the following conditions are
% met:
%
% Redistributions of source code must retain the above copyright notice,
% this list of conditions and the following disclaimer. Redistributions in
% binary form must reproduce the above copyright notice, this list of
% conditions and the following disclaimer in the documentation and/or other
% materials provided with the distribution. Neither the name of the
% <ORGANIZATION> nor the names of its contributors may be used to endorse
% or promote products derived from this software without specific prior
% written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS
% AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
% INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
% AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
% THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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% DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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% (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
% THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
%
%
% =========================================================================
%
%
% The BSD 2-Clause License:
%
% Redistribution and use in source and binary forms, with or without
% modification, are permitted provided that the following conditions are
% met:
%
% Redistributions of source code must retain the above copyright notice,
% this list of conditions and the following disclaimer. Redistributions in
% binary form must reproduce the above copyright notice, this list of
% conditions and the following disclaimer in the documentation and/or other
% materials provided with the distribution. THIS SOFTWARE IS PROVIDED BY
% THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
% WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
% MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
% NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY
% DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
% DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
% OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
% HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
% STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
% ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
% POSSIBILITY OF SUCH DAMAGE.
%
%
% =========================================================================
%
% The LGPL-2.1 license:
%
%                   GNU LESSER GENERAL PUBLIC LICENSE
%                        Version 2.1, February 1999
%
%  Copyright (C) 1991, 1999 Free Software Foundation, Inc. 51 Franklin
%  Street, Fifth Floor, Boston, MA  02110-1301  USA Everyone is permitted
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% [This is the first released version of the Lesser GPL.  It also counts
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%   When a program is linked with a library, whether statically or using
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% 
% 	    How to Apply These Terms to Your New Programs
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%   If you develop a new program, and you want it to be of the greatest
% possible use to the public, the best way to achieve this is to make it
% free software which everyone can redistribute and change under these terms.
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%     This program is free software; you can redistribute it and/or modify
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%     Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
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% END OF TERMS AND CONDITIONS
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%
% =========================================================================
%
% Full text of Waffle library license:
% ====================================
% Copyright 2012 Intel Corporation
%
% All rights reserved.
%
% Redistribution and use in source and binary forms, with or without
% modification, are permitted provided that the following conditions are met:
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% - Redistributions of source code must retain the above copyright notice, this
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% DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
% SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
% CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
% OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
% OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
%
% END OF TERMS AND CONDITIONS
%
% =========================================================================
%
% Full text of Boost license:
% ====================================
%  Boost Software License - Version 1.0 - August 17th, 2003
%
%  Permission is hereby granted, free of charge, to any person or organization
%  obtaining a copy of the software and accompanying documentation covered by
%  this license (the "Software") to use, reproduce, display, distribute,
%  execute, and transmit the Software, and to prepare derivative works of the
%  Software, and to permit third-parties to whom the Software is furnished to
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%  The copyright notices in the Software and this entire statement, including
%  the above license grant, this restriction and the following disclaimer,
%  must be included in all copies of the Software, in whole or in part, and
%  all derivative works of the Software, unless such copies or derivative
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%  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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%  ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
%  DEALINGS IN THE SOFTWARE.
%
% =========================================================================
%
% Full text of Portaudio license:
% ====================================
% License for V19
%
% PortAudio Portable Real-Time Audio Library
% Copyright (c) 1999-2011 Ross Bencina and Phil Burk
%
% 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
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% OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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% The text above constitutes the entire PortAudio license; however, the PortAudio community also makes
% the following non-binding requests:
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% Any person wishing to distribute modifications to the Software is requested to send the modifications to
% the original developer so that they can be incorporated into the canonical version. It is also requested
% that these non-binding requests be included along with the license above.
%
% =========================================================================
%
% Full text of Feral Interactive gamemode client license (BSD-3):
%
%  Copyright (c) 2017-2019, Feral Interactive
%  All rights reserved.
%
%  Redistribution and use in source and binary forms, with or without
%  modification, are permitted provided that the following conditions are met:
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%  * Redistributions of source code must retain the above copyright notice,
%  this list of conditions and the following disclaimer.
%  * Redistributions in binary form must reproduce the above copyright
%  notice, this list of conditions and the following disclaimer in the
%  documentation and/or other materials provided with the distribution.
%  * Neither the name of Feral Interactive nor the names of its contributors
%  may be used to endorse or promote products derived from this software
%  without specific prior written permission.
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%  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
%  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
%  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
%  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
%  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
%  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
%  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
%  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
%  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
%  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
%  POSSIBILITY OF SUCH DAMAGE.
% =========================================================================
%
% Full text of Nicholas Riley's "Brightness" license (BSD-2):
%
% Copyright (c) 2014-2019, Nicholas Riley
% All rights reserved.
%
% Redistribution and use in source and binary forms, with or without modification,
% are permitted provided that the following conditions are met:
%
% * Redistributions of source code must retain the above copyright notice, this
%   list of conditions and the following disclaimer.
%
% * Redistributions in binary form must reproduce the above copyright notice, this
%   list of conditions and the following disclaimer in the documentation and/or
%   other materials provided with the distribution.
%
% THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
% ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
% WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
% DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
% ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
% (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
% LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
% ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
% (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
% SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
%
% =========================================================================
%
% Full license texts of TinyEXR library and contained bits of OpenEXR library (BSD-3):
%
%
%    Copyright (c) 2014 - 2019, Syoyo Fujita and many contributors.
%    All rights reserved.
%
%    Redistribution and use in source and binary forms, with or without
%    modification, are permitted provided that the following conditions are met:
%        * Redistributions of source code must retain the above copyright
%        notice, this list of conditions and the following disclaimer.
%        * Redistributions in binary form must reproduce the above copyright
%        notice, this list of conditions and the following disclaimer in the
%        documentation and/or other materials provided with the distribution.
%        * Neither the name of the Syoyo Fujita nor the
%        names of its contributors may be used to endorse or promote products
%        derived from this software without specific prior written permission.
%
%    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
%    ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
%    WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
%    DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
%    DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
%    (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
%    LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
%    ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
%    (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
%    SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
%
%    // TinyEXR contains some OpenEXR code, which is licensed under ------------
%
%    ///////////////////////////////////////////////////////////////////////////
%    //
%    // Copyright (c) 2002, Industrial Light & Magic, a division of Lucas
%    // Digital Ltd. LLC
%    //
%    // All rights reserved.
%    //
%    // Redistribution and use in source and binary forms, with or without
%    // modification, are permitted provided that the following conditions are
%    // met:
%    // *       Redistributions of source code must retain the above copyright
%    // notice, this list of conditions and the following disclaimer.
%    // *       Redistributions in binary form must reproduce the above
%    // copyright notice, this list of conditions and the following disclaimer
%    // in the documentation and/or other materials provided with the
%    // distribution.
%    // *       Neither the name of Industrial Light & Magic nor the names of
%    // its contributors may be used to endorse or promote products derived
%    // from this software without specific prior written permission.
%    //
%    // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
%    // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
%    // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
%    // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
%    // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
%    // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
%    // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
%    // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
%    // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
%    // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
%    // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
%    //
%    ///////////////////////////////////////////////////////////////////////////
%
%    // End of OpenEXR license -------------------------------------------------
%
% End of tinyexr license texts.
%
% =========================================================================
%
% Full license text for included OpenEXR HDR sample images (BSD-3):
%
% Copyright (c) 2004, Industrial Light & Magic, a division of Lucasfilm
% Entertainment Company Ltd.  Portions contributed and copyright held by
% others as indicated.  All rights reserved.
%
% Redistribution and use in source and binary forms, with or without
% modification, are permitted provided that the following conditions are
% met:
%
%     * Redistributions of source code must retain the above
%       copyright notice, this list of conditions and the following
%       disclaimer.
%
%     * Redistributions in binary form must reproduce the above
%       copyright notice, this list of conditions and the following
%       disclaimer in the documentation and/or other materials provided with
%       the distribution.
%
%     * Neither the name of Industrial Light & Magic nor the names of
%       any other contributors to this software may be used to endorse or
%       promote products derived from this software without specific prior
%       written permission.
%
% THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
% IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
% THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
% PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
% CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
% EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
% PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
% PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
% LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
% NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
% SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
%
% End of OpenEXR sample images license text.
%
% =========================================================================
%
% Simplified Pixabay License:
%
% License for Content – Pixabay License
%
% Content on Pixabay is made available to you on the following terms ("Pixabay License").
% Under the Pixabay License you are granted an irrevocable, worldwide, non-exclusive and
% royalty free right to use, download, copy, modify or adapt the Content for commercial
% or non-commercial purposes. Attribution of the photographer, videographer, musician or
% Pixabay is not required but is always appreciated.
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% The Pixabay License does not allow:
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% (such as on stock media websites);
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% physical products, without adding any additional elements or otherwise adding value.
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% licenses have been obtained, and expressly disclaims any liability in this 
% respect.
%
% End of Simplified Pixabay license text.
%
% =========================================================================
%
% The zLib License:
%
% This software is provided 'as-is', without any express or
% implied warranty. In no event will the authors be held liable
% for any damages arising from the use of this software.
%
% Permission is granted to anyone to use this software for any
% purpose, including commercial applications, and to alter it and
% redistribute it freely, subject to the following restrictions:
%
% 1. The origin of this software must not be misrepresented; you
%    must not claim that you wrote the original software. If you use
%    this software in a product, an acknowledgment in the product
%    documentation would be appreciated but is not required.
%
% 2. Altered source versions must be plainly marked as such, and
%    must not be misrepresented as being the original software.
%
% 3. This notice may not be removed or altered from any source
%    distribution.
%
% End of the zLib license text.
%
% =========================================================================
%
% The HTC SRAnipal SDK license:
%
%                           License Agreement
%                     For Vive Super Reality Library
%
% Copyright (c) 2017, HTC Corporation
%
% All rights reserved. Third party copyrights are property of their respective owners.
%
% Redistribution and use in source and binary forms, with or without modification,
% are permitted provided that the following conditions are met:
%
%   * Redistribution's of source code must retain the above copyright notice,
%     this list of conditions and the following disclaimer.
%
%   * Redistribution's in binary form must reproduce the above copyright notice,
%     this list of conditions and the following disclaimer in the documentation
%     and/or other materials provided with the distribution.
%
%   * The name of the copyright holders may not be used to endorse or promote products
%     derived from this software without specific prior written permission.
%
% This software is provided by the copyright holders and contributors "as is" and
% any express or implied warranties, including, but not limited to, the implied
% warranties of merchantability and fitness for a particular purpose are disclaimed.
% In no event shall the Intel Corporation or contributors be liable for any direct,
% indirect, incidental, special, exemplary, or consequential damages
% (including, but not limited to, procurement of substitute goods or services;
% loss of use, data, or profits; or business interruption) however caused
% and on any theory of liability, whether in contract, strict liability,
% or tort (including negligence or otherwise) arising in any way out of
% the use of this software, even if advised of the possibility of such damage.
%
% End of the HTC SRAnipal SDK license text.
%
% =========================================================================
%
% The license of the apriltag library:
%
% BSD 2-Clause License
%
% Copyright (C) 2013-2016, The Regents of The University of Michigan. All rights reserved.
%
% Redistribution and use in source and binary forms, with or without modification, are
% permitted provided that the following conditions are met:
%
%   Redistributions of source code must retain the above copyright notice, this list of
%   conditions and the following disclaimer.
%
%   Redistributions in binary form must reproduce the above copyright notice, this list
%   of conditions and the following disclaimer in the documentation and/or other materials
%   provided with the distribution.
%
% THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
% EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
% OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
% SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
% INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
% PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
% INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
% LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
% OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
%
% The views and conclusions contained in the software and documentation are those of the
% authors and should not be interpreted as representing official policies, either expressed
% or implied, of the Regents of The University of Michigan.
%
% End of the apriltag library license text.
%
% =========================================================================

