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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 -> ${P}.tar.gz"
LICENSE="Apache-2.0"
SLOT="$(ver_cut 1)"
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="
amd64? ( || ( ${X86_CPU_FLAGS[*]/#/cpu_flags_x86_} ) )
arm64? ( cpu_flags_arm_neon )
"
BDEPEND="
virtual/pkgconfig
"
RDEPEND="
ispc? ( dev-lang/ispc )
tbb? ( dev-cpp/tbb:= )
"
DEPEND="${RDEPEND}"
DOCS=( CHANGELOG.md README.md readme.pdf )
PATCHES=(
"${FILESDIR}/embree-4.3.1-dont-install-tutorials.patch"
"${FILESDIR}/${PN}-4.3.2-fix-output-operator.patch"
)
pkg_setup() {
CONFIG_CHECK="~TRANSPARENT_HUGEPAGE"
WARNING_TRANSPARENT_HUGEPAGE="Not enabling Transparent Hugepages (CONFIG_TRANSPARENT_HUGEPAGE) will impact rendering performance."
linux-info_pkg_setup
}
src_prepare() {
cmake_src_prepare
# disable RPM package building
sed -e 's|CPACK_RPM_PACKAGE_RELEASE 1|CPACK_RPM_PACKAGE_RELEASE 0|' \
-i CMakeLists.txt || die
# raise cmake minimum version to silence warning
sed -e 's#CMAKE_MINIMUM_REQUIRED(VERSION 3.[0-9].0)#CMAKE_MINIMUM_REQUIRED(VERSION 3.5)#I' \
-i \
CMakeLists.txt \
kernels/rthwif/CMakeLists.txt \
tutorials/embree_info/CMakeLists.txt \
tutorials/minimal/CMakeLists.txt \
|| die
}
src_configure() {
# -Werror=odr
# https://bugs.gentoo.org/859838
# https://github.com/embree/embree/issues/481
filter-lto
# NOTE: You can make embree accept custom CXXFLAGS by turning off
# EMBREE_IGNORE_CMAKE_CXX_FLAGS. However, the linking will fail if you use
# any "m*" compile flags. This is because embree builds modules for the
# different supported ISAs and picks the correct one at runtime.
# "m*" will pull in cpu instructions that shouldn't be in specific modules
# and it fails to link properly.
# https://github.com/embree/embree/issues/115
filter-flags -m*
# https://bugs.gentoo.org/910164
tc-is-clang && filter-lto
local mycmakeargs=(
-DCMAKE_SKIP_INSTALL_RPATH:BOOL=ON
# Default culling settings for Blender
# (Cycles will not render correctly without these)
# Some Embree tests will fail with these settings though...
-DEMBREE_BACKFACE_CULLING=OFF
-DEMBREE_BACKFACE_CULLING_CURVES=ON
-DEMBREE_BACKFACE_CULLING_SPHERES=ON
-DEMBREE_COMPACT_POLYS=$(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)
# TODO figure out sycl support
-DEMBREE_SYCL_SUPPORT="no"
-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=$(usex test)
-DEMBREE_ZIP_MODE=OFF
)
# Disable asserts
append-cppflags -DNDEBUG
if use test; then
mycmakeargs+=(
-DBUILD_TESTING=ON
-DEMBREE_TESTING_INSTALL_TESTS=OFF
-DEMBREE_TESTING_INTENSITY=4
# These tutorials are not used by the default tests
-DEMBREE_TUTORIALS_GLFW=OFF
-DEMBREE_TUTORIALS_INSTALL=OFF
-DEMBREE_TUTORIALS_LIBJPEG=OFF
-DEMBREE_TUTORIALS_LIBPNG=OFF
-DEMBREE_TUTORIALS_OPENIMAGEIO=OFF
-DCMAKE_DISABLE_FIND_PACKAGE_OpenImageIO="yes"
)
fi
cmake_src_configure
}
src_test() {
# NOTE Some Embree tests will fail due to EMBREE_BACKFACE_CULLING settings for blender...
local CMAKE_SKIP_TESTS=(
'^embree_verify$'
'^embree_verify_i2$'
'^viewer_models_curves_round_line_segments_3.ecs$'
'^viewer_models_curves_round_line_segments_7.ecs$'
'^viewer_models_curves_round_line_segments_8.ecs$'
'^viewer_models_curves_round_line_segments_9.ecs$'
'^viewer_coherent_models_curves_round_line_segments_3.ecs$'
'^viewer_coherent_models_curves_round_line_segments_7.ecs$'
'^viewer_coherent_models_curves_round_line_segments_8.ecs$'
'^viewer_coherent_models_curves_round_line_segments_9.ecs$'
'^viewer_quad_coherent_models_curves_round_line_segments_3.ecs$'
'^viewer_quad_coherent_models_curves_round_line_segments_7.ecs$'
'^viewer_quad_coherent_models_curves_round_line_segments_8.ecs$'
'^viewer_quad_coherent_models_curves_round_line_segments_9.ecs$'
'^viewer_grid_coherent_models_curves_round_line_segments_3.ecs$'
'^viewer_grid_coherent_models_curves_round_line_segments_7.ecs$'
'^viewer_grid_coherent_models_curves_round_line_segments_8.ecs$'
'^viewer_grid_coherent_models_curves_round_line_segments_9.ecs$'
'^hair_geometry$'
'^embree_tests$'
)
cmake_src_test
}
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