Merge remote-tracking branch 'remotes/v-sekai-godot/vsk-subdiv-4.4' i…

…nto groups-staging-4.4

modules/subdiv/.clang-format

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+BasedOnStyle:  LLVM
+AccessModifierOffset: -4
+AlignAfterOpenBracket: DontAlign
+AlignOperands:   DontAlign
+AlignTrailingComments: false
+AllowAllParametersOfDeclarationOnNextLine: false
+BreakConstructorInitializers: AfterColon
+ColumnLimit:     0
+ConstructorInitializerIndentWidth: 8
+ContinuationIndentWidth: 8
+Cpp11BracedListStyle: false
+IndentCaseLabels: true
+IndentWidth:     4
+KeepEmptyLinesAtTheStartOfBlocks: false
+SpacesInLineCommentPrefix:
+  Minimum:         0
+  Maximum:         -1
+TabWidth:        4
+UseTab:          Always
+
+Language:        Cpp
+Standard:        c++17

modules/subdiv/.gitattributes

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+# Normalize EOL for all files that Git considers text files.
+* text=auto eol=lf

modules/subdiv/.gitignore

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+# Binaries.
+*.so
+
+# Objects.
+.scons-cache/
+*.os
+
+# SConstruct
+.sconf_temp
+.sconsign.dblite
+*.pyc
+
+# MacOS
+.DS_Store/
+
+# Editors
+.vscode/
+
+*.obj
+
+*.o

modules/subdiv/.gitrepo

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+; DO NOT EDIT (unless you know what you are doing)
+;
+; This subdirectory is a git "subrepo", and this file is maintained by the
+; git-subrepo command. See https://github.com/ingydotnet/git-subrepo#readme
+;
+[subrepo]
+	remote = https://github.com/V-Sekai/godot-subdiv.git
+	branch = main
+	commit = 9b0c7e36c52ee931b95e406bb345009f073eed17
+	parent = e2d9f70a6e1ecaba5fa1a36a5c5c8689a0da10b0
+	method = merge
+	cmdver = 0.4.9

modules/subdiv/AUTHORS.md

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+# Godot Subdiv authors
+
+GitHub usernames are indicated in parentheses.
+
+## Initial Project
+
+This project is originally a port from a [Godot 3 module](https://github.com/godot-extended-libraries/godot-fire/tree/feature/3.2/opensubdiv-next) by
+
+    K. S. Ernest (iFire) Lee (fire)
+
+who also contributed directly by testing, opening issues and helping with the Importer.
+\
+\
+The [proposal for adding opensubdiv](https://github.com/godotengine/godot-proposals/issues/784) to Godot, laying the groundwork for said module, was made by
+
+    Camille Mohr-Daurat (pouleyKetchoupp)

modules/subdiv/LICENSE

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+MIT License
+
+Copyright (c) 2023-present K. S. Ernest (Lee) and contributors (cf. AUTHORS.md).
+Copyright (c) 2022 Marvin Falk and contributors (cf. AUTHORS.md).
+
+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.

modules/subdiv/README.md

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+# Godot Subdiv
+
+This is a modified version of tefusion/godot-subdiv to be a Godot Engine C++ module.
+
+| ![UV Subdivision](UVSubdivision.gif) | ![Skinning subdivision](SkinningSubdivision.gif) |
+| ------------------------------------ | ------------------------------------------------ |
+
+## Getting Started
+
+### Importing
+
+After installing the addon and enabling it in the settings, you can select the custom **Godot Subdiv Importer** in the import settings for any glb or gltf file. You can also use the **subdivision settings in any scene importer** to be able to make use of all the features of the 3d import pipeline from Godot.
+
+There you will see one option.
+
+SubdivMeshInstance3D
+
+Doesn't bake. Skinning and blend shape changes get processed by CPU and then directly thrown at the RenderingServer. This is useful if you have a changing mesh or changing subdivision level.
+
+Adjust the subdivision level, click reimport and you should see your mesh subdivided.
+
+### Modeling Tips
+
+OpenSubdiv has a great section on [modeling for subdivision](https://graphics.pixar.com/opensubdiv/docs/mod_notes.html). Not all of them apply for Godot Subdiv though: You can currently only import either quad only meshes to use the Catmull-Clark scheme or any other mesh which will default to the Loop subdivision scheme.
+
+### Building the project yourself
+
+To build this project you need to have SCons installed, otherwise everything is included in the project.
+
+For just building and trying out the project, do:
+
+```bash
+scons target=template_debug
+```
+
+in the cloned folder.
+
+For running the tests, do:
+
+```bash
+scons -Q tests=1 target=template_debug
+```
+
+which will run simple doctest tests when starting godot on the terminal:
+
+```bash
+path/to/godot --editor --path ${workspaceFolder}/project
+```
+
+See more in the [SConstruct](SConstruct) file.
+
+## FAQ
+
+### How to create a mesh only containing Quads?
+
+In Blender, you can go in Edit Mode and go Select->Select All by Trait->Faces by Sides and set it to Not Equal To 4. After removing the then selected faces and replacing them with quads, Quad import will work.
+
+## Acknowledgments
+
+- [OpenSubdiv](https://github.com/PixarAnimationStudios/OpenSubdiv) files in [thirdparty/opensubdiv](thirdparty/opensubdiv) licensed under [Modified Apache 2.0](thirdparty/opensubdiv/LICENSE.txt)
+- [Godot3 module for opensubdiv](https://github.com/godot-extended-libraries/godot-fire/tree/feature/3.2/opensubdiv-next) by fire that was referenced for subdivision implementation
+- [Template used](https://github.com/nathanfranke/gdextension), includes the used GitHub workflow and was easy to set up
+
+## License
+
+[MIT](LICENSE)
+
+Third-party notices are in [THIRDPARTY.md](THIRDPARTY.md).

modules/subdiv/SCsub

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+#!/usr/bin/env python
+
+Import("env")
+
+module_env = env.Clone()
+module_env.Append(CPPDEFINES=["_USE_MATH_DEFINES"])
+module_env.add_source_files(env.modules_sources, "src/import/*.cpp")
+module_env.add_source_files(env.modules_sources, "src/nodes/*.cpp")
+module_env.add_source_files(env.modules_sources, "src/resources/*.cpp")
+module_env.add_source_files(env.modules_sources, "src/subdivision/*.cpp")
+
+thirdparty_dir = "thirdparty/opensubdiv/"
+thirdparty_sources = [
+    "far/error.cpp",
+    "far/topologyDescriptor.cpp",
+    "far/topologyRefiner.cpp",
+    "far/topologyRefinerFactory.cpp",
+    "sdc/crease.cpp",
+    "sdc/typeTraits.cpp",
+    "vtr/fvarLevel.cpp",
+    "vtr/fvarRefinement.cpp",
+    "vtr/level.cpp",
+    "vtr/quadRefinement.cpp",
+    "vtr/refinement.cpp",
+    "vtr/sparseSelector.cpp",
+    "vtr/triRefinement.cpp",
+]
+thirdparty_sources = [thirdparty_dir + file for file in thirdparty_sources]
+
+env_thirdparty = module_env.Clone()
+env_thirdparty.disable_warnings()
+env_thirdparty.add_source_files(env.modules_sources, thirdparty_sources)
+
+module_env.add_source_files(env.modules_sources, "*.cpp")
+
+if env.editor_build:
+    module_env.add_source_files(env.modules_sources, "editor/*.cpp")