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virtualx-engine/thirdparty/README.md
JFonS 112b416056 Implement new CPU lightmapper 
Completely re-write the lightmap generation code:
- Follow the general lightmapper code structure from 4.0.
- Use proper path tracing to compute the global illumination.
- Use atlassing to merge all lightmaps into a single texture (done by @RandomShaper)
- Use OpenImageDenoiser to improve the generated lightmaps.
- Take into account alpha transparency in material textures.
- Allow baking environment lighting.
- Add bicubic lightmap filtering.

There is some minor compatibility breakage in some properties and methods
in BakedLightmap, but lightmaps generated in previous engine versions
should work fine out of the box.

The scene importer has been changed to generate `.unwrap_cache` files
next to the imported scene files. These files *SHOULD* be added to any
version control system as they guarantee there won't be differences when
re-importing the scene from other OSes or engine versions.

This work started as a Google Summer of Code project; Was later funded by IMVU for a good amount of progress;
Was then finished and polished by me on my free time.

Co-authored-by: Pedro J. Estébanez <pedrojrulez@gmail.com>
2021-01-14 18:05:56 +01:00

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Third party libraries

Please keep categories (## level) listed alphabetically and matching their respective folder names. Use two empty lines to separate categories for readability.

bullet

Files extracted from upstream source:

  • src/* apart from CMakeLists.txt and premake4.lua files
  • LICENSE.txt

certs

File extracted from a recent Fedora install: /etc/pki/ca-trust/extracted/pem/tls-ca-bundle.pem (It can't be extracted directly from the package, as it's generated on the user's system.)

cvtt

Files extracted from upstream source:

  • all .cpp, .h, and .txt files in ConvectionKernels/

embree

Files extracted from upstream:

  • All cpp files listed in modules/raytrace/godot_update_embree.py
  • All header files in the directories listed in modules/raytrace/godot_update_embree.py

Some minor changes have been made in order to fix build errors. They are marked with // -- GODOT start -- and // -- GODOT end -- comments. Apply the patches in the patches/ folder when syncing on newer upstream commits.

enet

  • Upstream: http://enet.bespin.org
  • Version: 1.3.17 (e0e7045b7e056b454b5093cb34df49dc4cee0bee, 2020)
  • License: MIT

Files extracted from upstream source:

  • all .c files in the main directory (except unix.c win32.c)
  • the include/enet/ folder as enet/ (except unix.h win32.h)
  • LICENSE file

Important: enet.h, host.c, protocol.c have been slightly modified to be usable by Godot's socket implementation and allow IPv6 and DTLS. Apply the patches in the patches/ folder when syncing on newer upstream commits.

Three files (godot.cpp, enet/godot.h, enet/godot_ext.h) have been added to provide enet socket implementation using Godot classes.

It is still possible to build against a system wide ENet but doing so will limit its functionality to IPv4 only.

etc2comp

Files extracted from upstream source:

  • all .cpp and .h files in EtcLib/
  • README.md, LICENSE, AUTHORS

Important: Some files have Godot-made changes. They are marked with // -- GODOT start -- and // -- GODOT end -- comments.

fonts

freetype

  • Upstream: https://www.freetype.org
  • Version: 2.10.4 (6a2b3e4007e794bfc6c91030d0ed987f925164a8, 2020)
  • License: FreeType License (BSD-like)

Files extracted from upstream source:

  • the src/ folder, stripped of the Jamfile files and the tools subfolder
  • the include/ folder
  • docs/{FTL.TXT,LICENSE.TXT}

glad

The files we package are automatically generated. See the header of glad.c for instructions on how to generate them for the GLES version Godot targets.

jpeg-compressor

Files extracted from upstream source:

  • jpgd*.{c,h}

libogg

  • Upstream: https://www.xiph.org/ogg
  • Version: git (c8fca6b4a02d695b1ceea39b330d4406001c03ed, 2019)
  • License: BSD-3-Clause

Files extracted from upstream source:

  • src/*.{c,h}
  • include/ogg/*.h in ogg/
  • COPYING

libpng

Files extracted from upstream source:

  • all .c and .h files of the main directory, except from example.c and pngtest.c
  • the arm/ folder
  • scripts/pnglibconf.h.prebuilt as pnglibconf.h
  • LICENSE

libsimplewebm

This contains libwebm, but the version in use is updated from the one used by libsimplewebm, and may have unmarked alterations from that.

Files extracted from upstream source:

  • all the .cpp, .hpp files in the main folder except example.cpp
  • LICENSE

Important: Some files have Godot-made changes. They are marked with // -- GODOT start -- and // -- GODOT end -- comments.

libtheora

Files extracted from upstream source:

  • all .c, .h in lib/
  • all .h files in include/theora/ as theora/
  • COPYING and LICENSE

Upstream patches included in the patches directory have been applied on top of the 1.1.1 source (not included in any stable release yet).

libvorbis

Files extracted from upstream source:

  • src/* except from: lookups.pl, Makefile.*
  • include/vorbis/*.h as vorbis/
  • COPYING

libvpx

Files extracted from upstream source:

TODO.

Important: File libvpx/vpx_dsp/x86/vpx_subpixel_8t_intrin_avx2.c has Godot-made change marked with // -- GODOT -- comments.

The files libvpx/third_party/android/cpu-features.{c,h} were copied from the Android NDK r18.

libwebp

Files extracted from upstream source:

  • src/* except from: .am, .rc and .in files
  • AUTHORS, COPYING, PATENTS

Important: The files utils/bit_reader_utils.{c,h} have Godot-made changes to ensure they build for Javascript/HTML5. Those changes are marked with // -- GODOT -- comments.

mbedtls

  • Upstream: https://tls.mbed.org/
  • Version: 2.16.9 (3fac0bae4a50113989b3d015cd2d948f51a6d9ac, 2020)
  • License: Apache 2.0

File extracted from upstream release tarball:

  • All *.h from include/mbedtls/ to thirdparty/mbedtls/include/mbedtls/
  • All *.c from library/ to thirdparty/mbedtls/library/
  • LICENSE and apache-2.0.txt files
  • Applied the patch in thirdparty/mbedtls/patches/1453.diff (PR 1453). Soon to be merged upstream. Check it out at next update.
  • Applied the patch in thirdparty/mbedtls/patches/padlock.diff. This disables VIA padlock support which defines a symbol unsupported which clashes with a pre-defined symbol.
  • Added 2 files godot_core_mbedtls_platform.{c,h} providing configuration for light bundling with core.

miniupnpc

Files extracted from upstream source:

  • All *.c and *.h files from miniupnpc to thirdparty/miniupnpc/miniupnpc
  • Remove test*, minihttptestserver.c and wingenminiupnpcstrings.c

The patch windows_fix.diff is applied to minissdpc.c to fix an upstream issue. The only modified file is miniupnpcstrings.h, which was created for Godot (it is usually autogenerated by cmake).

minizip

Files extracted from the upstream source:

  • contrib/minizip/{crypt.h,ioapi.{c,h},zip.{c,h},unzip.{c,h}}

Important: Some files have Godot-made changes for use in core/io. They are marked with /* GODOT start */ and /* GODOT end */ comments and a patch is provided in the minizip/ folder.

misc

Collection of single-file libraries used in Godot components.

nanosvg

Files extracted from the upstream source:

  • All .h files in src/
  • LICENSE.txt

oidn

Files extracted from upstream source:

common/* (except tasking.* and CMakeLists.txt) core/* include/OpenImageDenoise/* (except version.h.in) LICENSE.txt mkl-dnn/include/* mkl-dnn/src/* (except CMakeLists.txt) weights/rtlightmap_hdr.tza scripts/resource_to_cpp.py

Modified files: Modifications are marked with // -- GODOT start -- and // -- GODOT end --. Patch files are provided in oidn/patches/.

core/autoencoder.cpp core/autoencoder.h core/common.h core/device.cpp core/device.h core/transfer_function.cpp

scripts/resource_to_cpp.py (used in modules/denoise/resource_to_cpp.py)

opus

Files extracted from upstream source:

  • all .c and .h files in src/ (both opus and opusfile)
  • all .h files in include/ (both opus and opusfile) as opus/
  • remove unused opus_demo.c,
  • remove http.c, wincerts.c and winerrno.h (part of unused libopusurl)
  • celt/ and silk/ subfolders
  • COPYING

pcre2

Files extracted from upstream source:

  • Files listed in the file NON-AUTOTOOLS-BUILD steps 1-4
  • All .h files in src/ apart from pcre2posix.h
  • src/pcre2_jit_match.c
  • src/pcre2_jit_misc.c
  • src/sljit/
  • AUTHORS and LICENCE

pvrtccompressor

Files extracted from upstream source:

  • all .cpp and .h files apart from main.cpp
  • LICENSE.TXT

recastnavigation

Files extracted from upstream source:

  • Recast/ folder without CMakeLists.txt
  • License.txt

squish

Files extracted from upstream source:

  • all .cpp, .h and .inl files

Important: Some files have Godot-made changes. They are marked with // -- GODOT start -- and // -- GODOT end -- comments and a patch is provided in the squish/ folder.

tinyexr

Files extracted from upstream source:

  • tinyexr.{cc,h}

vhacd

Files extracted from upstream source:

  • From src/VHACD_Lib/: inc, public and src
  • LICENSE

Some downstream changes have been made and are identified by // -- GODOT start -- and // -- GODOT end -- comments. They can be reapplied using the patches included in the vhacd folder.

wslay

File extracted from upstream release tarball:

  • All *.c and *.h in lib/ and lib/includes/
  • wslay.h has a small Godot addition to fix MSVC build. See thirdparty/wslay/msvcfix.diff

xatlas

Files extracted from upstream source:

  • xatlas.{cpp,h}
  • LICENSE

zlib

Files extracted from upstream source:

  • all .c and .h files

zstd

Files extracted from upstream source:

  • lib/{common/,compress/,decompress/,zstd.h}
  • LICENSE