OpenSubdiv is a set of open source libraries that implement high
performance subdivision surface (subdiv) evaluation on massively
parallel CPU and GPU architectures. This code path is optimized
for drawing deforming surfaces with static topology at interactive
framerates.

OpenSubdiv is a potential requirement of Blender.

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

CUDA support currently requires prior installation of  one of:
    cudatoolkit_12
    cudatoolkit_13

The toolkit installed limits which particular graphics cards can be
supported. The lowest cuda architecture supported by cudatoolkit_12
is compute_50 while the lowest for cudatoolkit_13 is compute_75.
The highest for both _12 and _13 is compute_121.

For more information, see graphics/Blender/README.cuda