radeonsi: make use of ac_are_tessfactors_def_in_all_invocs()

Tested-by: Dieter Nützel <Dieter@nuetzel-hh.de>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>

diff --git a/src/gallium/drivers/radeonsi/si_shader_nir.c b/src/gallium/drivers/radeonsi/si_shader_nir.c
index bb7c3d7..37fa81f 100644 (file)
--- a/src/gallium/drivers/radeonsi/si_shader_nir.c
+++ b/src/gallium/drivers/radeonsi/si_shader_nir.c
@@ -285,14 +285,8 @@ void si_nir_scan_tess_ctrl(const struct nir_shader *nir,
        if (nir->info.stage != MESA_SHADER_TESS_CTRL)
                return;
 
-       /* Initial value = true. Here the pass will accumulate results from
-        * multiple segments surrounded by barriers. If tess factors aren't
-        * written at all, it's a shader bug and we don't care if this will be
-        * true.
-        */
-       out->tessfactors_are_def_in_all_invocs = true;
-
-       /* TODO: Implement scanning of tess factors, see tgsi backend. */
+       out->tessfactors_are_def_in_all_invocs =
+               ac_are_tessfactors_def_in_all_invocs(nir);
 }
 
 void si_nir_scan_shader(const struct nir_shader *nir,