anv: set 3DSTATE_[MESH|TASK]_CONTROL.MaximumNumberofThreadGroups

Documentation is worded in a confusing way, which may be understood that
we don't have to set this field to get good results.

MESH part of this commit improves performance of vk_meshlet_cadscene
by a factor of 2 on A380.

Fixes: ef04caea9b ("anv: Implement Mesh Shading pipeline")
Reviewed-by: Caio Oliveira <caio.oliveira@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/19412>
(cherry picked from commit d1d2dee970)

.pick_status.json

@@ -517,7 +517,7 @@
         "description": "anv: set 3DSTATE_[MESH|TASK]_CONTROL.MaximumNumberofThreadGroups",
         "nominated": true,
         "nomination_type": 1,
-        "resolution": 0,
+        "resolution": 1,
         "main_sha": null,
         "because_sha": "ef04caea9b8b98187340fd0ec6550aed06424b60"
     },

src/intel/vulkan/genX_pipeline.c

@@ -2180,6 +2180,7 @@ emit_task_state(struct anv_graphics_pipeline *pipeline)
       tc.TaskShaderEnable = true;
       tc.ScratchSpaceBuffer =
          get_scratch_surf(&pipeline->base, MESA_SHADER_TASK, task_bin);
+      tc.MaximumNumberofThreadGroups = 511;
    }
 
    const struct intel_device_info *devinfo = &pipeline->base.device->info;
@@ -2236,8 +2237,7 @@ emit_mesh_state(struct anv_graphics_pipeline *pipeline)
       mc.MeshShaderEnable = true;
       mc.ScratchSpaceBuffer =
          get_scratch_surf(&pipeline->base, MESA_SHADER_MESH, mesh_bin);
-
-      /* TODO(mesh): MaximumNumberofThreadGroups. */
+      mc.MaximumNumberofThreadGroups = 511;
    }
 
    const struct intel_device_info *devinfo = &pipeline->base.device->info;