thirdparty: Cleanup after #38386, document provenance and copyright

Also renamed `delaunay.h` to `delaunay_2d.h` to match the class name.

18 files changed, 249 insertions, 23 deletions

diff --git a/COPYRIGHT.txt b/COPYRIGHT.txt
index 81da02ab39..443e6fee97 100644
--- a/COPYRIGHT.txt
+++ b/COPYRIGHT.txt
@@ -303,6 +303,11 @@ Comment: NanoSVG
 Copyright: 2013-2014, Mikko Mononen
 License: Zlib
 
+Files: ./thirdparty/oidn/
+Comment: Intel Open Image Denoise
+Copyright: 2009-2020, Intel Corporation
+License: Apache-2.0
+
 Files: ./thirdparty/opus/
 Comment: Opus
 Copyright: 2001-2011, Xiph.Org, Skype Limited, Octasic,
diff --git a/core/SCsub b/core/SCsub
index 0ab4f11d87..d53988fae7 100644
--- a/core/SCsub
+++ b/core/SCsub
@@ -49,6 +49,7 @@ thirdparty_misc_dir = "#thirdparty/misc/"
 thirdparty_misc_sources = [
     # C sources
     "fastlz.c",
+    "r128.c",
     "smaz.c",
     # C++ sources
     "hq2x.cpp",
diff --git a/core/math/delaunay.h b/core/math/delaunay_2d.h
index 6f19f3e58a..b8252e9d16 100644
--- a/core/math/delaunay.h
+++ b/core/math/delaunay_2d.h
@@ -1,5 +1,5 @@
 /*************************************************************************/
-/*  delaunay.h                                                           */
+/*  delaunay_2d.h                                                        */
 /*************************************************************************/
 /*                       This file is part of:                           */
 /*                           GODOT ENGINE                                */
@@ -28,8 +28,8 @@
 /* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
 /*************************************************************************/
 
-#ifndef DELAUNAY_H
-#define DELAUNAY_H
+#ifndef DELAUNAY_2D_H
+#define DELAUNAY_2D_H
 
 #include "core/math/rect2.h"
 
@@ -170,4 +170,4 @@ public:
 	}
 };
 
-#endif // DELAUNAY_H
+#endif // DELAUNAY_2D_H
diff --git a/core/math/delaunay_3d.h b/core/math/delaunay_3d.h
index 6280ec8071..57f3a78d35 100644
--- a/core/math/delaunay_3d.h
+++ b/core/math/delaunay_3d.h
@@ -10,7 +10,8 @@
 #include "core/print_string.h"
 #include "core/variant.h"
 #include "core/vector.h"
-#include "thirdparty/r128/r128.h"
+
+#include "thirdparty/misc/r128.h"
 
 class Delaunay3D {
 	struct Simplex;
diff --git a/core/math/geometry.cpp b/core/math/geometry.cpp
index 65b80856cc..b0a46036f9 100644
--- a/core/math/geometry.cpp
+++ b/core/math/geometry.cpp
@@ -31,10 +31,11 @@
 #include "geometry.h"
 
 #include "core/print_string.h"
+
 #include "thirdparty/misc/clipper.hpp"
 #include "thirdparty/misc/triangulator.h"
 #define STB_RECT_PACK_IMPLEMENTATION
-#include "thirdparty/stb_rect_pack/stb_rect_pack.h"
+#include "thirdparty/misc/stb_rect_pack.h"
 
 #define SCALE_FACTOR 100000.0 // Based on CMP_EPSILON.
 
diff --git a/core/math/geometry.h b/core/math/geometry.h
index 5a8e21d02b..45c8558fac 100644
--- a/core/math/geometry.h
+++ b/core/math/geometry.h
@@ -31,13 +31,12 @@
 #ifndef GEOMETRY_H
 #define GEOMETRY_H
 
-#include "core/math/delaunay.h"
+#include "core/math/delaunay_2d.h"
 #include "core/math/face3.h"
 #include "core/math/rect2.h"
 #include "core/math/triangulate.h"
 #include "core/math/vector3.h"
 #include "core/object.h"
-
 #include "core/print_string.h"
 #include "core/vector.h"
 
diff --git a/core/math/r128.cpp b/core/math/r128.cpp
deleted file mode 100644
index fb1e4733ee..0000000000
--- a/core/math/r128.cpp
+++ /dev/null
@@ -1,2 +0,0 @@
-#define R128_IMPLEMENTATION
-#include "thirdparty/r128/r128.h"
diff --git a/editor/plugins/animation_blend_space_2d_editor.cpp b/editor/plugins/animation_blend_space_2d_editor.cpp
index 17cb68df3a..4ea84e716b 100644
--- a/editor/plugins/animation_blend_space_2d_editor.cpp
+++ b/editor/plugins/animation_blend_space_2d_editor.cpp
@@ -32,7 +32,7 @@
 
 #include "core/input/input.h"
 #include "core/io/resource_loader.h"
-#include "core/math/delaunay.h"
+#include "core/math/delaunay_2d.h"
 #include "core/os/keyboard.h"
 #include "core/project_settings.h"
 #include "editor/editor_scale.h"
diff --git a/editor/plugins/animation_state_machine_editor.cpp b/editor/plugins/animation_state_machine_editor.cpp
index ed51a2d2cf..509bf59716 100644
--- a/editor/plugins/animation_state_machine_editor.cpp
+++ b/editor/plugins/animation_state_machine_editor.cpp
@@ -32,7 +32,7 @@
 
 #include "core/input/input.h"
 #include "core/io/resource_loader.h"
-#include "core/math/delaunay.h"
+#include "core/math/delaunay_2d.h"
 #include "core/os/keyboard.h"
 #include "core/project_settings.h"
 #include "editor/editor_scale.h"
diff --git a/editor/plugins/animation_tree_editor_plugin.cpp b/editor/plugins/animation_tree_editor_plugin.cpp
index 9452c0f11b..9c48444e3e 100644
--- a/editor/plugins/animation_tree_editor_plugin.cpp
+++ b/editor/plugins/animation_tree_editor_plugin.cpp
@@ -36,7 +36,7 @@
 #include "animation_state_machine_editor.h"
 #include "core/input/input.h"
 #include "core/io/resource_loader.h"
-#include "core/math/delaunay.h"
+#include "core/math/delaunay_2d.h"
 #include "core/os/keyboard.h"
 #include "core/project_settings.h"
 #include "editor/editor_scale.h"
diff --git a/modules/denoise/SCsub b/modules/denoise/SCsub
index 8cf91b7dbd..0fa65c6296 100644
--- a/modules/denoise/SCsub
+++ b/modules/denoise/SCsub
@@ -17,7 +17,7 @@ thirdparty_sources = [
     "core/network.cpp",
     "core/autoencoder.cpp",
     "core/transfer_function.cpp",
-    "weights/rtlightmap_hdr.cpp",
+    "weights/rtlightmap_hdr.gen.cpp",
     "mkl-dnn/src/common/batch_normalization.cpp",
     "mkl-dnn/src/common/concat.cpp",
     "mkl-dnn/src/common/convolution.cpp",
@@ -110,7 +110,7 @@ env_thirdparty.disable_warnings()
 env_thirdparty.add_source_files(env.modules_sources, thirdparty_sources)
 
 weights_in_path = thirdparty_dir + "weights/rtlightmap_hdr.tza"
-weights_out_path = thirdparty_dir + "weights/rtlightmap_hdr.cpp"
+weights_out_path = thirdparty_dir + "weights/rtlightmap_hdr.gen.cpp"
 
 env_thirdparty.Depends(weights_out_path, weights_in_path)
 env_thirdparty.CommandNoCache(weights_out_path, weights_in_path, resource_to_cpp.tza_to_cpp)
diff --git a/scene/animation/animation_blend_space_2d.cpp b/scene/animation/animation_blend_space_2d.cpp
index 638531df41..ad60249f9a 100644
--- a/scene/animation/animation_blend_space_2d.cpp
+++ b/scene/animation/animation_blend_space_2d.cpp
@@ -29,7 +29,8 @@
 /*************************************************************************/
 
 #include "animation_blend_space_2d.h"
-#include "core/math/delaunay.h"
+
+#include "core/math/delaunay_2d.h"
 
 void AnimationNodeBlendSpace2D::get_parameter_list(List<PropertyInfo> *r_list) const {
 	r_list->push_back(PropertyInfo(Variant::VECTOR2, blend_position));
diff --git a/thirdparty/README.md b/thirdparty/README.md
index e51e7d7f24..c000133fe7 100644
--- a/thirdparty/README.md
+++ b/thirdparty/README.md
@@ -384,11 +384,19 @@ Collection of single-file libraries used in Godot components.
   * Upstream: http://www.pcg-random.org
   * Version: minimal C implementation, http://www.pcg-random.org/download.html
   * License: Apache 2.0
+- `r128.h`
+  * Upstream: https://github.com/fahickman/r128
+  * Version: 1.4.3 (2019)
+  * License: Public Domain
 - `smaz.{c,h}`
   * Upstream: https://github.com/antirez/smaz
   * Version: git (150e125cbae2e8fd20dd332432776ce13395d4d4, 2009)
   * License: BSD-3-Clause
   * Modifications: use `const char*` instead of `char*` for input string
+- `stb_rect_pack.h`
+  * Upstream: https://github.com/nothings/stb
+  * Version: 1.00 (2019)
+  * License: Public Domain (Unlicense) or MIT
 - `triangulator.{cpp,h}`
   * Upstream: https://github.com/ivanfratric/polypartition (`src/polypartition.cpp`)
   * Version: TBD, class was renamed
@@ -437,6 +445,17 @@ Files extracted from the upstream source:
 - LICENSE.txt
 
 
+## oidn
+
+- Upstream: https://github.com/OpenImageDenoise/oidn
+- Version: TBD
+- License: Apache 2.0
+
+Files extracted from upstream source:
+
+- TBD
+
+
 ## opus
 
 - Upstream: https://opus-codec.org
diff --git a/thirdparty/misc/r128.c b/thirdparty/misc/r128.c
new file mode 100644
index 0000000000..6b981aa693
--- /dev/null
+++ b/thirdparty/misc/r128.c
@@ -0,0 +1,2 @@
+#define R128_IMPLEMENTATION
+#include "r128.h"
diff --git a/thirdparty/r128/r128.h b/thirdparty/misc/r128.h
index 58933d7638..be7cd3024d 100644
--- a/thirdparty/r128/r128.h
+++ b/thirdparty/misc/r128.h
@@ -77,7 +77,7 @@ OTHER DEALINGS IN THE SOFTWARE.
 #  define R128_S32 int32_t
 #  define R128_U32 uint32_t
 #  define R128_S64 int64_t
-#  define R128_U64 long long unsigned int
+#  define R128_U64 uint64_t
 #  define R128_LIT_S64(x) x##ll
 #  define R128_LIT_U64(x) x##ull
 #endif
@@ -703,12 +703,12 @@ static R128_U32 r128__udiv64(R128_U32 nlo, R128_U32 nhi, R128_U32 d, R128_U32 *r
 }
 #elif !defined(_M_X64) || defined(R128_STDC_ONLY)
 #define r128__umul64(a, b) ((a) * (R128_U64)(b))
-/*static R128_U32 r128__udiv64(R128_U32 nlo, R128_U32 nhi, R128_U32 d, R128_U32 *rem)
+static R128_U32 r128__udiv64(R128_U32 nlo, R128_U32 nhi, R128_U32 d, R128_U32 *rem)
 {
    R128_U64 n64 = ((R128_U64)nhi << 32) | nlo;
    *rem = (R128_U32)(n64 % d);
    return (R128_U32)(n64 / d);
-}*/
+}
 #endif   //!R128_64BIT
 
 static void r128__neg(R128 *dst, const R128 *src)
@@ -1188,7 +1188,7 @@ static int r128__format(char *dst, size_t dstSize, const R128 *v, const R128ToSt
       // print a maximum of 20 digits
       fullPrecision = 0;
       precision = 20;
-   } else if (precision > (int)sizeof(buf) - 21) {
+   } else if (precision > sizeof(buf) - 21) {
       trail = precision - (sizeof(buf) - 21);
       precision -= trail;
    }
@@ -2121,4 +2121,3 @@ void r128Ceil(R128 *dst, const R128 *v)
 }
 
 #endif   //R128_IMPLEMENTATION
-
diff --git a/thirdparty/stb_rect_pack/stb_rect_pack.h b/thirdparty/misc/stb_rect_pack.h
index 3336fe7395..5c848de0e7 100644
--- a/thirdparty/stb_rect_pack/stb_rect_pack.h
+++ b/thirdparty/misc/stb_rect_pack.h
@@ -626,4 +626,3 @@ 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.
 ------------------------------------------------------------------------------
 */
-
diff --git a/thirdparty/oidn/.gitignore b/thirdparty/oidn/.gitignore
deleted file mode 100644
index 6be206fc29..0000000000
--- a/thirdparty/oidn/.gitignore
+++ /dev/null
@@ -1 +0,0 @@
-weights/rtlightmap_hdr.cpp
diff --git a/thirdparty/oidn/LICENSE.txt b/thirdparty/oidn/LICENSE.txt
new file mode 100644
index 0000000000..d645695673
--- /dev/null
+++ b/thirdparty/oidn/LICENSE.txt
@@ -0,0 +1,202 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. 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 and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.