graphics/embree: Added (ray tracing kernels)

Signed-off-by: Dave Woodfall <dave@slackbuilds.org>

Signed-off-by: Willy Sudiarto Raharjo <willysr@slackbuilds.org>

graphics/embree/README

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+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. The kernels are optimized
+for the latest Intel® processors with support for SSE, AVX, AVX2, and
+AVX-512 instructions.
+
+Intel® Embree supports runtime code selection to choose the traversal
+and build algorithms that best matches the instruction set of your CPU.
+We recommend using Intel® Embree through its API to get the highest
+benefit from future improvements. Intel® Embree is released as Open
+Source under the Apache 2.0 license.
+
+Intel® Embree supports applications written with the Intel® SPMD Program
+Compiler (ISPC, https://ispc.github.io/) by also providing an ISPC
+interface to the core ray tracing algorithms. This makes it possible to
+write a renderer in ISPC that automatically vectorizes and leverages
+SSE, AVX, AVX2, and AVX-512 instructions. ISPC also supports runtime
+code selection, thus ISPC will select the best code path for your
+application.
+
+Intel® Embree contains algorithms optimized for incoherent workloads
+(e.g. Monte Carlo ray tracing algorithms) and coherent workloads (e.g.
+primary visibility and hard shadow rays).
+
+The single-ray traversal kernels of Intel® Embree provide high
+performance for incoherent workloads and are very easy to integrate into
+existing rendering applications. Using the stream kernels, even higher
+performance for incoherent rays is possible, but integration might
+require significant code changes to the application to use the stream
+paradigm. In general for coherent workloads, the stream mode with
+coherent flag set gives the best performance.
+
+Intel® Embree also supports dynamic scenes by implementing
+high-performance two-level spatial index structure construction
+algorithms.
+
+In addition to the ray tracing kernels, Intel® Embree provides some
+Embree Tutorials to demonstrate how to use the Embree API.
+
+Optional dependency: Intel® Threading Building Blocks (TBB) & Intel®
+SPMD Program Compiler (ISPC)

graphics/embree/embree.SlackBuild

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+#!/bin/sh
+
+# Slackware build script for embree
+
+# Copyright 2006-2014  Robby Workman, Northport, AL, USA
+# All rights reserved.
+#
+# Redistribution and use of this script, with or without modification, is
+# permitted provided that the following conditions are met:
+#
+# 1. Redistributions of this script must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+#
+# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ''AS IS'' AND ANY EXPRESS OR IMPLIED
+# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+# EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+PRGNAM=embree
+VERSION=${VERSION:-3.12.1}
+BUILD=${BUILD:-1}
+TAG=${TAG:-_SBo}
+
+if [ -z "$ARCH" ]; then
+  case "$( uname -m )" in
+    i?86) ARCH=i586 ;;
+    arm*) ARCH=arm ;;
+       *) ARCH=$( uname -m ) ;;
+  esac
+fi
+
+CWD=$(pwd)
+TMP=${TMP:-/tmp/SBo}
+PKG=$TMP/package-$PRGNAM
+OUTPUT=${OUTPUT:-/tmp}
+
+if [ "$ARCH" = "i586" ]; then
+  SLKCFLAGS="-O2 -march=i586 -mtune=i686"
+  LIBDIRSUFFIX=""
+elif [ "$ARCH" = "i686" ]; then
+  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
+  LIBDIRSUFFIX=""
+elif [ "$ARCH" = "x86_64" ]; then
+  SLKCFLAGS="-O2 -fPIC"
+  LIBDIRSUFFIX="64"
+else
+  SLKCFLAGS="-O2"
+  LIBDIRSUFFIX=""
+fi
+
+set -e
+
+rm -rf $PKG
+mkdir -p $TMP $PKG $OUTPUT
+cd $TMP
+rm -rf $PRGNAM-$VERSION
+tar xvf $CWD/$PRGNAM-$VERSION.tar.?z*
+cd $PRGNAM-$VERSION
+
+chown -R root:root .
+find -L . \
+ \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 \
+  -o -perm 511 \) -exec chmod 755 {} \; -o \
+ \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
+  -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;
+
+#EMBREE_API_NAMESPACE:STRING=
+#EMBREE_BACKFACE_CULLING:BOOL=OFF
+#EMBREE_COMPACT_POLYS:BOOL=OFF
+#EMBREE_CURVE_SELF_INTERSECTION_AVOIDANCE_FACTOR:STRING=2.0
+#EMBREE_FILTER_FUNCTION:BOOL=ON
+#EMBREE_GEOMETRY_CURVE:BOOL=ON
+#EMBREE_GEOMETRY_GRID:BOOL=ON
+#EMBREE_GEOMETRY_INSTANCE:BOOL=ON
+#EMBREE_GEOMETRY_POINT:BOOL=ON
+#EMBREE_GEOMETRY_QUAD:BOOL=ON
+#EMBREE_GEOMETRY_SUBDIVISION:BOOL=ON
+#EMBREE_GEOMETRY_TRIANGLE:BOOL=ON
+#EMBREE_GEOMETRY_USER:BOOL=ON
+#EMBREE_IGNORE_CMAKE_CXX_FLAGS:BOOL=ON
+#EMBREE_IGNORE_INVALID_RAYS:BOOL=OFF
+#EMBREE_INSTALL_DEPENDENCIES:BOOL=OFF
+#EMBREE_ISA_AVX:BOOL=ON
+#EMBREE_ISA_AVX2:BOOL=ON
+#EMBREE_ISA_AVX512KNL:BOOL=OFF
+#EMBREE_ISA_AVX512SKX:BOOL=ON
+#EMBREE_ISA_SSE2:BOOL=ON
+#EMBREE_ISA_SSE42:BOOL=ON
+#EMBREE_ISPC_EXECUTABLE:FILEPATH=EMBREE_ISPC_EXECUTABLE-NOTFOUND
+#EMBREE_ISPC_SUPPORT:BOOL=ON
+#EMBREE_LIBRARY_NAME:STRING=embree3
+#EMBREE_MAX_INSTANCE_LEVEL_COUNT:STRING=1
+#EMBREE_MAX_ISA:STRING=NONE
+#EMBREE_MIN_WIDTH:BOOL=OFF
+#EMBREE_RAY_MASK:BOOL=OFF
+#EMBREE_RAY_PACKETS:BOOL=ON
+#EMBREE_STACK_PROTECTOR:BOOL=OFF
+#EMBREE_STATIC_LIB:BOOL=OFF
+#EMBREE_STAT_COUNTERS:BOOL=OFF
+#EMBREE_TASKING_SYSTEM:STRING=TBB
+#EMBREE_TUTORIALS:BOOL=ON
+#EMBREE_ZIP_MODE:BOOL=OFF
+
+mkdir -p build
+cd build
+  cmake \
+    -DCMAKE_C_FLAGS:STRING="$SLKCFLAGS" \
+    -DCMAKE_CXX_FLAGS:STRING="$SLKCFLAGS" \
+    -DCMAKE_INSTALL_PREFIX=/usr \
+    -DCMAKE_INSTALL_MANDIR=/usr/man \
+    -DCMAKE_INSTALL_DOCDIR=/usr/doc \
+    -DEMBREE_ISPC_SUPPORT=OFF \
+    -DEMBREE_TASKING_SYSTEM=OFF \
+    -DEMBREE_TUTORIALS=OFF \
+    -DCMAKE_BUILD_TYPE=Release ..
+  make VERBOSE=1
+  make install DESTDIR=$PKG
+cd ..
+
+find $PKG | xargs file | grep -e "executable" -e "shared object" | grep ELF \
+  | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true
+
+find $PKG/usr/man -type f -exec gzip -9 {} \;
+for i in $( find $PKG/usr/man -type l ) ; do ln -s $( readlink $i ).gz $i.gz ; rm $i ; done
+
+mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
+cp -a \
+  third-party-programs-TBB.txt third-party-programs.txt readme.pdf README.md LICENSE.txt CHANGELOG.md doc/* \
+  $PKG/usr/doc/$PRGNAM-$VERSION
+cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild
+find $PKG/usr/doc -name "Makefile*" -exec rm {} \;
+find $PKG/usr/doc -type f -exec chmod 644 {} \;
+
+mkdir -p $PKG/install
+cat $CWD/slack-desc > $PKG/install/slack-desc
+
+cd $PKG
+/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.${PKGTYPE:-tgz}

graphics/embree/embree.info

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+PRGNAM="embree"
+VERSION="3.12.1"
+HOMEPAGE="https://www.embree.org"
+DOWNLOAD="https://github.com/embree/embree/archive/v3.12.1/embree-3.12.1.tar.gz"
+MD5SUM="2d24fa44db63ae1900cf6279140abd8a"
+DOWNLOAD_x86_64=""
+MD5SUM_x86_64=""
+REQUIRES="glfw3"
+MAINTAINER="Fernando Lopez Jr."
+EMAIL="fernando.lopezjr@gmail.com"

graphics/embree/slack-desc

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+# HOW TO EDIT THIS FILE:
+# The "handy ruler" below makes it easier to edit a package description.
+# Line up the first '|' above the ':' following the base package name, and
+# the '|' on the right side marks the last column you can put a character in.
+# You must make exactly 11 lines for the formatting to be correct.  It's also
+# customary to leave one space after the ':' except on otherwise blank lines.
+
+      |-----handy-ruler------------------------------------------------------|
+embree: embree (ray tracing kernels)
+embree:
+embree: Intel® Embree is a collection of high-performance ray tracing kernels,
+embree: developed at Intel.
+embree: The target users of Intel® Embree are graphics application engineers
+embree: who want to improve the performance of their photo-realistic rendering
+embree: application by leveraging Embree's performance-optimized ray tracing
+embree: kernels.
+embree:
+embree: Homepage: https://www.embree.org/
+embree: