graphics/OpenSubdiv: Option for CUDA support

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

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

graphics/OpenSubdiv/CUDA-compatibility.patch

@@ -0,0 +1,18 @@
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -590,8 +590,14 @@ if(CUDA_FOUND)
+         if (NOT DEFINED OSD_CUDA_NVCC_FLAGS)
+             if (CUDA_VERSION_MAJOR LESS 6)
+                 set( OSD_CUDA_NVCC_FLAGS --gpu-architecture compute_11 )
+-            else()
++            elseif (CUDA_VERSION_MAJOR LESS 9)
+                 set( OSD_CUDA_NVCC_FLAGS --gpu-architecture compute_20 )
++            elseif (CUDA_VERSION_MAJOR LESS 11)
++                set( OSD_CUDA_NVCC_FLAGS --gpu-architecture compute_30 )
++            elseif (CUDA_VERSION_MAJOR LESS 12)
++                set( OSD_CUDA_NVCC_FLAGS --gpu-architecture compute_35 )
++            else()
++                set( OSD_CUDA_NVCC_FLAGS --gpu-architecture compute_50 )
+             endif()
+         endif()
+     endif()

graphics/OpenSubdiv/OpenSubdiv.SlackBuild

@@ -3,7 +3,7 @@
 # Slackware build script for Opensubdiv
 
 # Copyright 2019 J. "MUFTI" Scheurich Stuttgart/Germany
-# Copyright 2021-3 Christoph Willing  Brisbane/Australia
+# Copyright 2021-2023 Christoph Willing  Brisbane/Australia
 # All rights reserved.
 #
 # Redistribution and use of this script, with or without modification, is
@@ -32,7 +32,7 @@ cd $(dirname $0) ; CWD=$(pwd)
 PRGNAM=OpenSubdiv
 VERSION=${VERSION:-3.5.0}
 SRCVER=$(echo $VERSION | tr . _)
-BUILD=${BUILD:-2}
+BUILD=${BUILD:-3}
 TAG=${TAG:-_SBo}
 PKGTYPE=${PKGTYPE:-tgz}
 
@@ -75,6 +75,8 @@ rm -rf $PRGNAM-$SRCVER
 tar xvf $CWD/$PRGNAM-$SRCVER.tar.gz
 cd $PRGNAM-$SRCVER
 sed -i -e '/${OPENGL_gl_LIBRARY}/a${OPENGL_glx_LIBRARY}' CMakeLists.txt
+patch -p1 < $CWD/CUDA-compatibility.patch
+
 chown -R root:root .
 find -L . \
  \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 \
@@ -82,6 +84,9 @@ find -L . \
  \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
   -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \+
 
+cuda="-DNO_CUDA=ON";
+[ "${ENABLE_CUDA:-no}" = "yes" ] && cuda=""
+
 mkdir -p build
 cd build
   cmake \
@@ -90,6 +95,8 @@ cd build
     -DCMAKE_INSTALL_PREFIX=/usr \
     -DCMAKE_LIBDIR_BASE=lib${LIBDIRSUFFIX} \
     -DCMAKE_DOCDIR_BASE=doc/$PRGNAM-$VERSION \
+	-DNO_CLEW=ON \
+	$cuda \
     -DCMAKE_BUILD_TYPE=Release ..
 
   make

graphics/OpenSubdiv/README

@@ -6,5 +6,11 @@ framerates.
 
 Additional utility is available in OpenSubdiv when the following SBo
 packages are installed and detected at build time:
-    tbb cudatoolkit glfw3
+    tbb glfw3 ptex
+
+Some graphics cards are not supported with the existing version of
+the cudatoolkit at SBo. Therefore CUDA backend support is not enabled
+by default in this SlackBuild. It must be explicitly enabled (as well
+as cudatoolkit being installed) to use it in the build e.g.
+    ENABLE_CUDA=yes bash OpenSubdiv.SlackBuild