gallium/util: return correct number of bound vertex buffers

In case a state tracker unbinds every slot by a seperate
pipe->set_vertex_buffers() call, starting from slot zero, the number
of bound buffers would not reach zero at all.
The current algorithm does not account for pre-existing holes in the
buffer list.

Unbinding all buffers at once or starting at the top-most slot results
in correct behaviour.

Calculating the correct number of bound buffers fixes a NULL pointer
dereference in nvc0_validate_vertex_buffers_shared().

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=93004
Signed-off-by: Patrick Rudolph <[email protected]>
Reviewed-by: Marek Olšák <[email protected]>
Reviewed-by: Ilia Mirkin <[email protected]>
Cc: "11.0 11.1" <[email protected]>

0 files changed, 0 insertions, 0 deletions