1 files changed, 118 insertions, 0 deletions
diff --git a/media-libs/embree/embree-4.3.0.ebuild b/media-libs/embree/embree-4.3.0.ebuild
new file mode 100644
index 000000000000..370913e57a52
--- /dev/null
+++ b/media-libs/embree/embree-4.3.0.ebuild
@@ -0,0 +1,118 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit cmake flag-o-matic linux-info toolchain-funcs
+
+DESCRIPTION="Collection of high-performance ray tracing kernels"
+HOMEPAGE="https://github.com/embree/embree"
+SRC_URI="https://github.com/embree/embree/archive/v${PV}.tar.gz -> ${P}.tar.gz"
+
+LICENSE="Apache-2.0"
+SLOT="3"
+KEYWORDS="-* ~amd64 ~arm64"
+X86_CPU_FLAGS=( sse2 sse4_2 avx avx2 avx512dq )
+CPU_FLAGS=( cpu_flags_arm_neon ${X86_CPU_FLAGS[@]/#/cpu_flags_x86_} )
+IUSE="compact-polys ispc +raymask ssp +tbb test ${CPU_FLAGS[@]}"
+RESTRICT="!test? ( test )"
+REQUIRED_USE="|| ( ${CPU_FLAGS[@]} )"
+
+BDEPEND="
+	virtual/pkgconfig
+"
+RDEPEND="
+	ispc? ( dev-lang/ispc )
+	tbb? ( dev-cpp/tbb:= )
+"
+DEPEND="${RDEPEND}"
+
+DOCS=( CHANGELOG.md README.md readme.pdf )
+
+PATCHES=(
+	"${FILESDIR}"/embree-4.3.0-dont-install-tutorials.patch
+)
+
+pkg_setup() {
+	CONFIG_CHECK="~TRANSPARENT_HUGEPAGE"
+	WARNING_TRANSPARENT_HUGEPAGE="Not enabling Transparent Hugepages (CONFIG_TRANSPARENT_HUGEPAGE) will impact rendering performance."
+
+	linux-info_pkg_setup
+}
+
+src_prepare() {
+	cmake_src_prepare
+
+	# disable RPM package building
+	sed -e 's|CPACK_RPM_PACKAGE_RELEASE 1|CPACK_RPM_PACKAGE_RELEASE 0|' \
+		-i CMakeLists.txt || die
+}
+
+src_configure() {
+	# NOTE: You can make embree accept custom CXXFLAGS by turning off
+	# EMBREE_IGNORE_CMAKE_CXX_FLAGS. However, the linking will fail if you use
+	# any "m*" compile flags. This is because embree builds modules for the
+	# different supported ISAs and picks the correct one at runtime.
+	# "m*" will pull in cpu instructions that shouldn't be in specific modules
+	# and it fails to link properly.
+	# https://github.com/embree/embree/issues/115
+
+	filter-flags -m*
+
+	# https://bugs.gentoo.org/910164
+	tc-is-clang && filter-lto
+
+	local mycmakeargs=(
+		-DCMAKE_SKIP_INSTALL_RPATH:BOOL=ON
+
+		# Default culling settings for Blender
+		# (Cycles will not render correctly without these)
+		# Some Embree tests will fail with these settings though...
+		-DEMBREE_BACKFACE_CULLING=OFF
+		-DEMBREE_BACKFACE_CULLING_CURVES=ON
+		-DEMBREE_BACKFACE_CULLING_SPHERES=ON
+
+		-DEMBREE_COMPACT_POLYS=$(usex compact-polys)
+
+		# Make sure that we are using our custom compilie flags
+		-DEMBREE_IGNORE_CMAKE_CXX_FLAGS=OFF
+
+		# Set to NONE so we can manually switch on ISAs below
+		-DEMBREE_MAX_ISA:STRING="NONE"
+		-DEMBREE_ISA_AVX=$(usex cpu_flags_x86_avx)
+		-DEMBREE_ISA_AVX2=$(usex cpu_flags_x86_avx2)
+		-DEMBREE_ISA_AVX512=$(usex cpu_flags_x86_avx512dq)
+		# TODO look into neon 2x support
+		-DEMBREE_ISA_NEON=$(usex cpu_flags_arm_neon)
+		-DEMBREE_ISA_SSE2=$(usex cpu_flags_x86_sse2)
+		-DEMBREE_ISA_SSE42=$(usex cpu_flags_x86_sse4_2)
+		-DEMBREE_ISPC_SUPPORT=$(usex ispc)
+		-DEMBREE_RAY_MASK=$(usex raymask)
+
+		-DEMBREE_STACK_PROTECTOR=$(usex ssp)
+		-DEMBREE_STATIC_LIB=OFF
+		-DEMBREE_TASKING_SYSTEM:STRING=$(usex tbb "TBB" "INTERNAL")
+		# Tutorial binaries are required by the tests
+		-DEMBREE_TUTORIALS=$(usex test)
+		-DEMBREE_ZIP_MODE=OFF
+	)
+
+	# Disable asserts
+	append-cppflags -DNDEBUG
+
+	if use test; then
+		mycmakeargs+=(
+			-DBUILD_TESTING=ON
+			-DEMBREE_TESTING_INSTALL_TESTS=OFF
+			-DEMBREE_TESTING_INTENSITY=4
+			# These tutorials are not used by the default tests
+			-DEMBREE_TUTORIALS_GLFW=OFF
+			-DEMBREE_TUTORIALS_INSTALL=OFF
+			-DEMBREE_TUTORIALS_LIBJPEG=OFF
+			-DEMBREE_TUTORIALS_LIBPNG=OFF
+			-DEMBREE_TUTORIALS_OPENIMAGEIO=OFF
+		)
+	fi
+
+	cmake_src_configure
+}