radv: emulate GEOMETRY_SHADER_INVOCATIONS query on RDNA1-2
The number of geometry shader invocations is correctly counted by the
hardware for both NGG and the legacy GS path but it increments for
NGG VS/TES because they are merged with GS, but it shouldn't. Fix this
by emulating the number of geometry shader invocations.
This fixes piglit/bin/arb_query_buffer_object-qbo and recent
dEQP-VK.query_pool.statistics_query.gs_invocations_no_gs.* failures
with NGG.
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/24231>