The vendored cursor_blend.ptx was regenerated with the CUDA 13.3 toolkit,
which stamps '.version 9.3' — and a driver whose JIT predates that ISA
refuses the whole module with CUDA_ERROR_UNSUPPORTED_PTX_VERSION (222),
silently killing host-side cursor compositing (on-glass: composite-mode
cursor invisible on driver 595.58, KWin leg). The kernels use only baseline
arithmetic, so hand-lower the version directive to 8.0 (CUDA 12.0), which
every supported Turing+ driver JITs. Both files now warn that an nvcc
regeneration re-stamps the version and must be re-lowered.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>