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# 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 tutorial ${CPU_FLAGS[@]}"
REQUIRED_USE="|| ( ${CPU_FLAGS[@]} )"
BDEPEND="
virtual/pkgconfig
"
RDEPEND="
>=media-libs/glfw-3.2.1
virtual/opengl
ispc? ( dev-lang/ispc )
tbb? ( dev-cpp/tbb:= )
tutorial? (
media-libs/libjpeg-turbo
>=media-libs/libpng-1.6.34:0=
>=media-libs/openimageio-1.8.7:0=
)
"
DEPEND="${RDEPEND}"
DOCS=( CHANGELOG.md README.md readme.pdf )
PATCHES=(
"${FILESDIR}"/${PN}-3.13.5-fix-openimageio-test.patch
"${FILESDIR}"/${PN}-3.13.5-fix-arm64.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() {
# -Werror=odr
# https://bugs.gentoo.org/859838
# https://github.com/embree/embree/issues/481
filter-lto
# 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=(
# Currently Intel only host their test files on their internal network.
# So it seems like users can't easily get a hold of these and do
# regression testing on their own.
-DBUILD_TESTING:BOOL=OFF
-DCMAKE_SKIP_INSTALL_RPATH:BOOL=ON
# default
-DEMBREE_BACKFACE_CULLING=OFF
-DEMBREE_COMPACT_POLYS=$(usex compact-polys)
# default
-DEMBREE_FILTER_FUNCTION=ON
# default
-DEMBREE_GEOMETRY_CURVE=ON
# default
-DEMBREE_GEOMETRY_GRID=ON
# default
-DEMBREE_GEOMETRY_INSTANCE=ON
# default
-DEMBREE_GEOMETRY_POINT=ON
# default
-DEMBREE_GEOMETRY_QUAD=ON
# default
-DEMBREE_GEOMETRY_SUBDIVISION=ON
# default
-DEMBREE_GEOMETRY_TRIANGLE=ON
# default
-DEMBREE_GEOMETRY_USER=ON
# default
-DEMBREE_IGNORE_CMAKE_CXX_FLAGS=OFF
# default
-DEMBREE_IGNORE_INVALID_RAYS=OFF
# Set to NONE so we can manually switch on ISAs below
-DEMBREE_MAX_ISA:STRING="NONE"
-DEMBREE_ISA_AVX=$(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=$(usex raymask)
# default
-DEMBREE_RAY_PACKETS=ON
-DEMBREE_STACK_PROTECTOR=$(usex ssp)
-DEMBREE_STATIC_LIB=OFF
-DEMBREE_STAT_COUNTERS=OFF
-DEMBREE_TASKING_SYSTEM:STRING=$(usex tbb "TBB" "INTERNAL")
-DEMBREE_TUTORIALS=$(usex tutorial))
# Disable asserts
append-cppflags -DNDEBUG
if use tutorial; then
mycmakeargs+=(
-DEMBREE_TUTORIALS_LIBJPEG=ON
-DEMBREE_TUTORIALS_LIBPNG=ON
-DEMBREE_TUTORIALS_OPENIMAGEIO=ON
)
fi
cmake_src_configure
}
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