https://software.opensuse.org/package/Mesa-libRusticlOpenCL
Page: Rusticl — The Mesa 3D Graphics Library latest documentation
Certified OpenCL 3.0 support with image support, OpenCL 2.x - under development.
Available with X11:XOrg repo since Mesa 22.3.
Under development. Right now it supports Intel Iris & nouveau.
Support for radeonsi - in works (Mesa 23.x ?), support for r600 - in plans.
Not available for Leap 15.4:
https://bugzilla.opensuse.org/show_bug.cgi?id=1207711
Not available for Leap 15.5:
https://bugzilla.opensuse.org/show_bug.cgi?id=1207578
IMHO it is possible to compile Rusticl manually for Leap.