+ unsigned prim_discard_vertex_count_threshold, tmp;
+ si_initialize_prim_discard_tunables(sscreen, false,
+ &prim_discard_vertex_count_threshold,
+ &tmp);
+ /* Compute-shader-based culling doesn't support VBOs in user SGPRs. */
+ if (prim_discard_vertex_count_threshold != UINT_MAX)
+ sscreen->num_vbos_in_user_sgprs = sscreen->info.chip_class >= GFX9 ? 5 : 1;