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anv: Re-use one old BT block in reset_batch_bo_chain

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We intentionally throw away all but one BT block but then we set
cmd_buffer->bt_block to ANV_STATE_NULL instead of the one we hung on to.
This causes the command buffer to immediately re-emit STATE_BASE_ADDRESS
the first time a BT is needed for no good reason.

Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
This commit is contained in:
Jason Ekstrand
2020-01-28 16:21:56 -06:00
parent a2e9dd51b3
commit ee4cdef9ae
1 changed files with 2 additions and 1 deletions
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src/intel/vulkan/anv_batch_chain.c
+2 -1
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@@ -874,7 +874,8 @@ anv_cmd_buffer_reset_batch_bo_chain(struct anv_cmd_buffer *cmd_buffer)
anv_binding_table_pool_free(cmd_buffer->device, *bt_block);
}
assert(u_vector_length(&cmd_buffer->bt_block_states) == 1);
cmd_buffer->bt_next = ANV_STATE_NULL;
cmd_buffer->bt_next = *(struct anv_state *)u_vector_head(&cmd_buffer->bt_block_states);
cmd_buffer->bt_next.offset = 0;
anv_reloc_list_clear(&cmd_buffer->surface_relocs);
cmd_buffer->last_ss_pool_center = 0;