graphics/Blender: Add support for embree

Signed-off-by: Christoph Willing <chris.willing@linux.com>

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

4 files changed, 93 insertions, 3 deletions

diff --git a/graphics/Blender/01_FindEmbree_so.diff b/graphics/Blender/01_FindEmbree_so.diff
new file mode 100644
index 0000000000..6739f6852a
--- /dev/null
+++ b/graphics/Blender/01_FindEmbree_so.diff
@@ -0,0 +1,75 @@
+--- build_files/cmake/Modules/FindEmbree.cmake.orig	2020-10-21 18:59:19.000000000 +1000
++++ build_files/cmake/Modules/FindEmbree.cmake	2021-01-16 01:26:51.000000000 +1000
+@@ -7,19 +7,12 @@
+ #  EMBREE_ROOT_DIR, The base directory to search for Embree.
+ #                        This can also be an environment variable.
+ #  EMBREEFOUND, If false, do not try to use Embree.
+-#
+-# also defined, but not for general use are
+-#  EMBREE_LIBRARY, where to find the Embree library.
+ 
+ #=============================================================================
+ # Copyright 2018 Blender Foundation.
+ #
+-# Distributed under the OSI-approved BSD License (the "License");
+-# see accompanying file Copyright.txt for details.
+-#
+-# This software is distributed WITHOUT ANY WARRANTY; without even the
+-# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+-# See the License for more information.
++# Distributed under the OSI-approved BSD 3-Clause License,
++# see accompanying file BSD-3-Clause-license.txt for details.
+ #=============================================================================
+ 
+ # If EMBREE_ROOT_DIR was defined in the environment, use it.
+@@ -44,9 +37,9 @@
+ 
+ SET(_embree_FIND_COMPONENTS
+   embree3
++  embree_sse42
+   embree_avx
+   embree_avx2
+-  embree_sse42
+   lexers
+   math
+   simd
+@@ -66,29 +59,28 @@
+     PATH_SUFFIXES
+       lib64 lib
+     )
++  IF (NOT EMBREE_${UPPERCOMPONENT}_LIBRARY)
++    IF (EMBREE_EMBREE3_LIBRARY)
++      # If we can't find all the static libraries, try to fall back to the shared library if found.
++      # This allows building with a shared embree library
++      SET(_embree_LIBRARIES ${EMBREE_EMBREE3_LIBRARY})
++      BREAK()
++    ENDIF ()
++  ENDIF ()
+   LIST(APPEND _embree_LIBRARIES "${EMBREE_${UPPERCOMPONENT}_LIBRARY}")
+ ENDFOREACH()
+ 
+ 
+-FIND_LIBRARY(EMBREE_LIBRARY
+-  NAMES
+-    libembree3
+-  HINTS
+-    ${_embree_SEARCH_DIRS}
+-  PATH_SUFFIXES
+-    lib64 lib
+-)
+-
+ # handle the QUIETLY and REQUIRED arguments and set EMBREE_FOUND to TRUE if
+ # all listed variables are TRUE
+ INCLUDE(FindPackageHandleStandardArgs)
+-FIND_PACKAGE_HANDLE_STANDARD_ARGS(EMBREE DEFAULT_MSG
++FIND_PACKAGE_HANDLE_STANDARD_ARGS(Embree DEFAULT_MSG
+     _embree_LIBRARIES EMBREE_INCLUDE_DIR)
+ 
+ IF(EMBREE_FOUND)
+   SET(EMBREE_LIBRARIES ${_embree_LIBRARIES})
+   SET(EMBREE_INCLUDE_DIRS ${EMBREE_INCLUDE_DIR})
+-ENDIF(EMBREE_FOUND)
++ENDIF()
+ 
+ MARK_AS_ADVANCED(
+   EMBREE_INCLUDE_DIR
diff --git a/graphics/Blender/Blender.SlackBuild b/graphics/Blender/Blender.SlackBuild
index 06d9917ec5..4d8d8cb152 100644
--- a/graphics/Blender/Blender.SlackBuild
+++ b/graphics/Blender/Blender.SlackBuild
@@ -2,7 +2,7 @@
 
 # Slackware build script for Blender
 
-# Copyright 2015-2020 Christoph Willing, Brisbane Australia
+# Copyright 2015-2021 Christoph Willing, Brisbane Australia
 # All rights reserved.
 #
 # Redistribution and use of this script, with or without modification, is
@@ -24,7 +24,7 @@
 
 PRGNAM=Blender
 VERSION=${VERSION:-2.83.8}
-BUILD=${BUILD:-1}
+BUILD=${BUILD:-2}
 TAG=${TAG:-_SBo}
 
 SRCNAM=blender
@@ -69,6 +69,16 @@ if [ -d /usr/include/cuda ]; then
   fi
 fi
 
+embree=""
+if [ -d /usr/include/embree3 ]; then
+  # If embree is installed, assume we want to use it
+  embree="-DWITH_CYCLES_EMBREE=ON"
+  # However disable embree if requested by e.g. EMBREE=no
+  if [ ${EMBREE:-yes} != "yes" ]; then
+    embree="-DWITH_CYCLES_EMBREE=OFF"
+  fi
+fi
+
 set -e
 
 rm -rf $PKG
@@ -77,6 +87,7 @@ cd $TMP
 rm -rf $SRCNAM-$VERSION
 tar xvf $CWD/$SRCNAM-$VERSION.tar.xz
 cd $SRCNAM-$VERSION
+patch -p0 < $CWD/01_FindEmbree_so.diff
 chown -R root:root .
 find -L . \
  \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 \
@@ -115,6 +126,7 @@ cd build
     -DWITH_SDL_DYNLOAD:BOOL=ON \
     -DCMAKE_BUILD_TYPE=Release \
     $cuda \
+    $embree \
 
   make
   make install DESTDIR=$PKG
diff --git a/graphics/Blender/Blender.info b/graphics/Blender/Blender.info
index a00c8f5457..26038a5885 100644
--- a/graphics/Blender/Blender.info
+++ b/graphics/Blender/Blender.info
@@ -5,6 +5,6 @@ DOWNLOAD="https://download.blender.org/source/blender-2.83.8.tar.xz"
 MD5SUM="1a920506a3a695d629d5f312b9b45c01"
 DOWNLOAD_x86_64=""
 MD5SUM_x86_64=""
-REQUIRES="ffmpeg jack opencollada opus python-requests valgrind numpy3 SDL2 openimageio freealut tbb"
+REQUIRES="ffmpeg jack opencollada opus python-requests valgrind numpy3 SDL2 openimageio freealut tbb embree"
 MAINTAINER="Christoph Willing"
 EMAIL="chris.willing@linux.com"
diff --git a/graphics/Blender/README b/graphics/Blender/README
index dfaa1243f0..aa1613683c 100644
--- a/graphics/Blender/README
+++ b/graphics/Blender/README
@@ -18,6 +18,9 @@ successful build. The CUDA handling above remains for cases which may:
     - require the existing cudatoolkit for other purposes
       (so need CUDA=no for Blender)
 
+Support for embree may be disabled by passing EMBREE=no when building e.g.
+    EMBREE=no sh ./Blender.SlackBuild
+
 Version 2.83.8 is the last SBo supported version of Blender for building
 from source code in Slackware64-14.2. A more recent compiler (gcc-9.3.1)
 is required for 2.90.x and later blender versions.