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IBL packs provided by SunnyRoad and HDRIHaven. Thanks to both. *
www.SunnyRoad.eu *
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Distributed with CC-BY License
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Modify them in any way,
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Geographical data for time zones functionality and information *
Thanks to: http://www.geonames.org/export/
Attributed to: GeoNames geographical database (cc-by license (creative commons attributions license).
World Map: NASA's Blue Marble Next Generation *
Thanks to http://visibleearth.nasa.gov/
Attributed to: NASA and Visible Earth.
SPA algorithm for computation of sun position *
Thanks to: http://rredc.nrel.gov/solar/codesandalgorithms/spa/
Attributed to: U.S. Department of Energy (DOE)/NREL/ALLIANCE
Data and Software Access to or use of any data or software made available on this server (""Data"") shall impose the following obligations on the user, and use of the Data constitutes user's agreement to these terms. The user is granted the right, without any fee or cost, to use or copy the Data, provided that this entire notice appears in all copies of the Data. Further, the user agrees to credit the U.S. Department of Energy (DOE)/NREL/ALLIANCE in any publication that results from the use of the Data. The names DOE/NREL/ALLIANCE, however, may not be used in any advertising or publicity to endorse or promote any products or commercial entities unless specific written permission is obtained from DOE/NREL/ ALLIANCE. The user also understands that DOE/NREL/ALLIANCE are not obligated to provide the user with any support, consulting, training or assistance of any kind with regard to the use of the Data or to provide the user with any updates, revisions or new versions thereof. DOE, NREL, and ALLIANCE do not guarantee or endorse any results generated by use of the Data, and user is entirely responsible for the results and any reliance on the results or the Data in general.
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Copyright and Licensing. GLEW is originally derived from the EXTGL project by Lev Povalahev. The source code is licensed under the Modified BSD License, the Mesa 3-D License (MIT) and the Khronos License (MIT).
The OpenGL Extension Wrangler Library *
Copyright (C) 2002-2007, Milan Ikits 
Copyright (C) 2002-2007, Marcelo E. Magallon 
Copyright (C) 2002, Lev Povalahev
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Redistribution and use in source and binary forms, with or without 
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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*Mesa 3-D graphics library *
Version: 7.0
Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
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
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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
BRIAN PAUL 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.
OpenCL *
https://www.khronos.org/opencl/
Copyright (c) 2007 The Khronos Group Inc.
Permission is hereby granted, free of charge, to any person obtaining a
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THE MATERIALS ARE PROVIDED ""AS IS"", WITHOUT WARRANTY OF ANY KIND,
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CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.""