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anv: ensure mesh is disabled on context init

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It turns out the hardware doesn't save the whole state on a context
switch, as the kernel expects when it creates the golden context.
For some HW units, only the state that was explicitly programmed will be
part of it, so we need to make sure mesh shading is disabled on context
creation, or we risk being context switched with an application that
uses mesh, and when ours gets to run again, the mesh state won't be
reset, and submitting a legacy 3D pipeline while the HW thinks mesh is
enabled causes us to hang.

Cc: 23.2 <mesa-stable>

Reviewed-by: Marcin Ślusarz <marcin.slusarz@intel.com>
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/24150>
This commit is contained in:
Iván Briano 2023-07-05 15:40:52 -07:00 • committed by Marge Bot
parent 50d68f74b5
commit 7b0ded0b23
1 changed files with 5 additions and 0 deletions
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5
src/intel/vulkan/genX_state.c
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@ -584,6 +584,11 @@ init_render_queue_state(struct anv_queue *queue)
}
#endif
#if GFX_VERx10 >= 125
anv_batch_emit(&batch, GENX(3DSTATE_MESH_CONTROL), zero);
anv_batch_emit(&batch, GENX(3DSTATE_TASK_CONTROL), zero);
#endif
anv_batch_emit(&batch, GENX(MI_BATCH_BUFFER_END), bbe);
assert(batch.next <= batch.end);