media-libs/embree: New package

Embree is a collection of high-performance ray tracing kernels,
developed at Intel. The target users of Embree are graphics application
engineers who want to improve the performance of their photo-realistic
rendering application by leveraging Embree's performance-optimized ray
tracing kernels.

Signed-off-by: Sebastian Parborg <darkdefende@gmail.com>
Signed-off-by: Sam James <sam@gentoo.org>

3 files changed, 150 insertions, 0 deletions

diff --git a/media-libs/embree/Manifest b/media-libs/embree/Manifest
new file mode 100644
index 000000000000..cc27e4a85af7
--- /dev/null
+++ b/media-libs/embree/Manifest
@@ -0,0 +1 @@
+DIST embree-3.13.0.tar.gz 13708421 BLAKE2B bace1866d9d6907308d38370347d23b4edb3fe287d093acf35367be1d4548d1df064ed9d46ef928f17af99e335d5fcd7b7285a2bd95707361440547544782080 SHA512 3fc4f00151cb9558810c643bf77f3135465d65c4523e08d5289a0fdcb18d4c63a8e805647e4ce208556c4679d44373d817761c1003b1e9dc65a39d5ebf17926f
diff --git a/media-libs/embree/embree-3.13.0.ebuild b/media-libs/embree/embree-3.13.0.ebuild
new file mode 100644
index 000000000000..548f969a2cff
--- /dev/null
+++ b/media-libs/embree/embree-3.13.0.ebuild
@@ -0,0 +1,107 @@
+# Copyright 1999-2021 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+inherit cmake flag-o-matic linux-info toolchain-funcs
+
+DESCRIPTION="Collection of high-performance ray tracing kernels"
+HOMEPAGE="https://github.com/embree/embree"
+LICENSE="Apache-2.0"
+KEYWORDS="~amd64 ~x86"
+SRC_URI="https://github.com/embree/embree/archive/v${PV}.tar.gz -> ${P}.tar.gz"
+SLOT="3"
+X86_CPU_FLAGS=( sse2:sse2 sse4_2:sse4_2 avx:avx avx2:avx2 avx512dq:avx512dq )
+CPU_FLAGS=( ${X86_CPU_FLAGS[@]/#/cpu_flags_x86_} )
+IUSE="+compact-polys ispc raymask ssp +tbb tutorial static-libs ${CPU_FLAGS[@]%:*}"
+BDEPEND="
+	virtual/pkgconfig
+"
+RDEPEND="
+	ispc? ( dev-lang/ispc )
+	>=media-libs/glfw-3.2.1
+	tbb? ( dev-cpp/tbb )
+	tutorial? (
+		>=media-libs/libpng-1.6.34:0=
+		>=media-libs/openimageio-1.8.7
+		virtual/jpeg:0
+	)
+	virtual/opengl
+"
+DEPEND="${RDEPEND}"
+RESTRICT="mirror"
+DOCS=( CHANGELOG.md README.md readme.pdf )
+
+pkg_setup() {
+	CONFIG_CHECK="~TRANSPARENT_HUGEPAGE"
+	WARNING_TRANSPARENT_HUGEPAGE="Not enabling Transparent Hugepages (CONFIG_TRANSPARENT_HUGEPAGE) will impact rendering performance."
+	linux-info_pkg_setup
+
+	if ! ( cat /proc/cpuinfo | grep sse2 > /dev/null ) ; then
+		die "You need a CPU with at least sse2 support"
+	fi
+}
+
+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 "march" compile flags. This is because embree builds modules for the
+	# different supported ISAs and picks the correct one at runtime.
+	# "march" 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 -march=*
+
+	local mycmakeargs=(
+		-DBUILD_TESTING:BOOL=OFF
+		-DCMAKE_SKIP_INSTALL_RPATH:BOOL=ON
+		-DEMBREE_BACKFACE_CULLING=OFF	   	# default
+		-DEMBREE_COMPACT_POLYS=$(usex compact-polys)
+		-DEMBREE_FILTER_FUNCTION=ON			# default
+		-DEMBREE_GEOMETRY_CURVE=ON			# default
+		-DEMBREE_GEOMETRY_GRID=ON			# default
+		-DEMBREE_GEOMETRY_INSTANCE=ON	   	# default
+		-DEMBREE_GEOMETRY_POINT=ON			# default
+		-DEMBREE_GEOMETRY_QUAD=ON			# default
+		-DEMBREE_GEOMETRY_SUBDIVISION=ON	# default
+		-DEMBREE_GEOMETRY_TRIANGLE=ON		# default
+		-DEMBREE_GEOMETRY_USER=ON			# default
+		-DEMBREE_IGNORE_CMAKE_CXX_FLAGS=OFF
+		-DEMBREE_IGNORE_INVALID_RAYS=OFF	# default
+		-DEMBREE_MAX_ISA:STRING="NONE"		# Set to NONE so we can manually switch on ISAs below
+		-DEMBREE_ISA_AVX=$(usex cpu_flags_x86_avx)
+		-DEMBREE_ISA_AVX2=$(usex cpu_flags_x86_avx2)
+		-DEMBREE_ISA_AVX512=$(usex cpu_flags_x86_avx512dq)
+		-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_RAY_PACKETS=ON				# default
+		-DEMBREE_STACK_PROTECTOR=$(usex ssp)
+		-DEMBREE_STATIC_LIB=$(usex static-libs)
+		-DEMBREE_STAT_COUNTERS=OFF
+		-DEMBREE_TASKING_SYSTEM:STRING=$(usex tbb "TBB" "INTERNAL")
+		-DEMBREE_TUTORIALS=$(usex tutorial) )
+
+	# Disable asserts
+	append-flags  -DNDEBUG
+
+	if use tutorial; then
+		mycmakeargs+=(
+			-DEMBREE_ISPC_ADDRESSING:STRING="64"
+			-DEMBREE_TUTORIALS_LIBJPEG=ON
+			-DEMBREE_TUTORIALS_LIBPNG=ON
+			-DEMBREE_TUTORIALS_OPENIMAGEIO=ON )
+	fi
+
+	cmake_src_configure
+}
diff --git a/media-libs/embree/metadata.xml b/media-libs/embree/metadata.xml
new file mode 100644
index 000000000000..9fb89375a782
--- /dev/null
+++ b/media-libs/embree/metadata.xml
@@ -0,0 +1,42 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "http://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+	<maintainer type="person" proxied="yes">
+		<email>darkdefende@gmail.com</email>
+		<name>Sebastian Parborg</name>
+	</maintainer>
+	<maintainer type="project" proxied="proxy">
+		<email>proxy-maint@gentoo.org</email>
+		<name>Proxy Maintainers</name>
+	</maintainer>
+	<longdescription>
+		Intel® Embree is a collection of high-performance ray tracing kernels,
+		developed at Intel. The target users of Intel® Embree are graphics
+		application engineers who want to improve the performance of their
+		photo-realistic rendering application by leveraging Embree's
+		performance-optimized ray tracing kernels.
+	</longdescription>
+	<use>
+		<flag restrict="&gt;=media-libs/embree-3.12.2" name="compact-polys">
+			Enables double indexed poly layout.
+		</flag>
+		<flag restrict="&gt;=media-libs/embree-3.12.2" name="ssp">
+			When enabled, Embree compiles with stack protection against return address overrides.
+		</flag>
+		<flag restrict="&gt;=media-libs/embree-3.12.2" name="ispc">
+			Build Embree with support for ISPC applications.
+		</flag>
+		<flag restrict="&gt;=media-libs/embree-3.12.2" name="raymask">
+			Enables ray mask support.
+		</flag>
+		<flag restrict="&gt;=media-libs/embree-3.12.2" name="tbb">
+			Use TBB instead of the built-in Embree tasking system.
+		</flag>
+		<flag restrict="&gt;=media-libs/embree-3.12.2" name="tutorial">
+			Enable to build Embree tutorials programs.
+		</flag>
+	</use>
+	<upstream>
+		<remote-id type="github">embree/embree</remote-id>
+	</upstream>
+</pkgmetadata>