init wayland build

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+# Maintainer: Jeremy Attali <contact@jtheoof.me>
+# Contributor: Sven-Hendrik Haase <svenstaro@gmail.com>
+# Contributor: John Sowiak <john@archlinux.org>
+# Contributor: tobias <tobias@archlinux.org>
+
+## This is a blander build based on wayland branch by Christian Rauch
+## See Blender thread https://devtalk.blender.org/t/wayland-and-egl-support/11171
+## This PKGBUILD was mainly taken from blender-develop-git AUR package.
+
+# Sometimes blender.org takes some time to release patch releases and because Arch users
+# are impatient, we sometimes need to build from git directly.
+# Update because I get so many queries on this:
+# Due to our other rolling deps, it's sometimes not possible to build Blender stable releases.
+# More often than not, a new openshadinglanguage breaks it and I could either backport fixes
+# or simply roll with a new version. I usually choose the latter when the former seems
+# unreasonable.
+
+# For legal reasons, we can't separately package the Optix headers so we'll
+# just build the package against them. I checked with NVIDIA and this way is
+# fine with them.
+
+#_gittag=v2.82a
+# _gitcommit=054dbb833e15275e0e991e2c15e754a3e7583716
+_gitbranch=wayland
+
+pkgname=blender-wayland-git
+pkgver=2.90.r95473.g52ad92977e1
+[[ -n $_gitcommit ]] && pkgver=${pkgver}.git1.${_gitcommit:0:8}
+pkgrel=1
+epoch=17
+pkgdesc="A fully integrated 3D graphics creation suite"
+arch=('x86_64')
+license=('GPL')
+url="http://www.blender.org"
+provides=('blender')
+conflicts=('blender')
+depends=('libpng' 'libtiff' 'openexr' 'python' 'desktop-file-utils' 'python-requests'
+         'shared-mime-info' 'hicolor-icon-theme' 'xdg-utils' 'glew' 'openjpeg2' 'python-numpy'
+         'freetype2' 'openal' 'ffmpeg' 'fftw' 'boost-libs' 'opencollada' 'alembic'
+         'openimageio' 'libsndfile' 'jack' 'opencolorio' 'openshadinglanguage' 'openimagedenoise'
+         'jemalloc' 'libspnav' 'ptex' 'opensubdiv' 'openvdb' 'log4cplus' 'sdl2' 'embree')
+makedepends=('cmake' 'boost' 'mesa' 'git' 'llvm' 'cuda' 'ninja')
+optdepends=('cuda: cycles renderer cuda support')
+options=(!strip)
+source=("git://git.blender.org/blender-addons.git"
+        "git://git.blender.org/blender-addons-contrib.git"
+        "git://git.blender.org/blender-translations.git"
+        "git://git.blender.org/blender-dev-tools.git"
+        embree.patch
+        https://developer.download.nvidia.com/redist/optix/v7.0/OptiX-7.0.0-include.zip)
+
+if [[ -n $_gitbranch ]]; then
+    source+=("${pkgname}::git+https://github.com/christianrauch/blender.git#branch=${_gitbranch}")
+fi
+
+sha512sums=('SKIP'
+            'SKIP'
+            'SKIP'
+            'SKIP'
+            '6de779ad8649a034ee65c45a36d7838ac0b8b32c3336b4d476186265c060f56276e3e0a2860ec4bff42bef7d5582ee82238013845f6a697672767a05a455aaca'
+            'b2cff73def3757d4259f4b4d318a8ccfe166bf7c215cbb2124f1c81bd6e742f96207285b24eb4d99b527b7b97dc6d5e8fdf2f16d78d5d1e2684c26d681328491'
+            'SKIP')
+
+
+pkgver() {
+  blender_version=$(grep -Po "BLENDER_VERSION \K[0-9]{3}" "$srcdir"/${pkgname}/source/blender/blenkernel/BKE_blender_version.h)
+  printf "%d.%d.r%s.g%s" \
+    $((blender_version/100)) \
+    $((blender_version%100)) \
+    "$(git -C "$srcdir/${pkgname}" rev-list --count HEAD)" \
+    "$(git -C "$srcdir/${pkgname}" rev-parse --short HEAD)"
+}
+
+
+prepare() {
+  cd "$srcdir/$pkgname"
+
+  git submodule init
+  git config submodule."release/scripts/addons".url "${srcdir}/blender-addons"
+  git config submodule."release/scripts/addons_contrib".url "${srcdir}/blender-addons-contrib"
+  git config submodule."release/datafiles/locale".url "${srcdir}/blender-translations"
+  git config submodule."source/tools".url "${srcdir}/blender-dev-tools"
+  git submodule update
+
+  patch -Np1 -i "$srcdir"/embree.patch
+
+  mkdir build
+}
+
+build() {
+  cd "$srcdir/$pkgname"/build
+
+  cmake \
+    -GNinja \
+    -C../build_files/cmake/config/blender_release.cmake .. \
+    -DOPTIX_ROOT_DIR="$srcdir"/include \
+    -DWITH_CYCLES_EMBREE=ON \
+    -DCMAKE_INSTALL_PREFIX=/usr \
+    -DCMAKE_BUILD_TYPE=Release \
+    -DWITH_INSTALL_PORTABLE=OFF \
+    -DWITH_PYTHON_INSTALL=OFF \
+    -DWITH_GHOST_WAYLAND=ON \
+    -DPYTHON_VERSION=3.8 \
+    -DPYTHON_LIBPATH=/usr/lib \
+    -DPYTHON_LIBRARY=python3.8 \
+    -DPYTHON_INCLUDE_DIRS=/usr/include/python3.8
+  ninja
+}
+
+package() {
+  cd "$srcdir/$pkgname/build"
+
+  DESTDIR="${pkgdir}" ninja install
+  install -Dm755 ../release/bin/blender-softwaregl "${pkgdir}/usr/bin/blender-softwaregl"
+  python -m compileall "${pkgdir}/usr/share/blender"
+  python -O -m compileall "${pkgdir}/usr/share/blender"
+}