radeonsi: don't emit DB_STENCIL_CONTROL if it has no effect

Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>

diff --git a/src/gallium/drivers/radeonsi/si_state.c b/src/gallium/drivers/radeonsi/si_state.c
index 53f66ac473e13b6c250ef67fea14bb45900a450e..a8255f2fe724fb1f399f3ba2f972bd8796934198 100644 (file)
--- a/src/gallium/drivers/radeonsi/si_state.c
+++ b/src/gallium/drivers/radeonsi/si_state.c
@@ -1085,7 +1085,8 @@ static void *si_create_dsa_state(struct pipe_context *ctx,
        }
 
        si_pm4_set_reg(pm4, R_028800_DB_DEPTH_CONTROL, db_depth_control);
-       si_pm4_set_reg(pm4, R_02842C_DB_STENCIL_CONTROL, db_stencil_control);
+       if (state->stencil[0].enabled)
+               si_pm4_set_reg(pm4, R_02842C_DB_STENCIL_CONTROL, db_stencil_control);
        if (state->depth.bounds_test) {
                si_pm4_set_reg(pm4, R_028020_DB_DEPTH_BOUNDS_MIN, fui(state->depth.bounds_min));
                si_pm4_set_reg(pm4, R_028024_DB_DEPTH_BOUNDS_MAX, fui(state->depth.bounds_max));