diff --git a/src/gallium/drivers/radeonsi/si_state.c b/src/gallium/drivers/radeonsi/si_state.c
index 3839c2b19ec..d12424cbe29 100644
--- a/src/gallium/drivers/radeonsi/si_state.c
+++ b/src/gallium/drivers/radeonsi/si_state.c
@@ -961,13 +961,15 @@ static void *si_create_rs_state(struct pipe_context *ctx, const struct pipe_rast
                          S_028810_DX_LINEAR_ATTR_CLIP_ENA(1);
 
    if (rs->rasterizer_discard) {
-      rs->ngg_cull_flags = SI_NGG_CULL_ENABLED |
-                           SI_NGG_CULL_FRONT_FACE |
-                           SI_NGG_CULL_BACK_FACE;
-      rs->ngg_cull_flags_y_inverted = rs->ngg_cull_flags;
+      rs->ngg_cull_flags_tris = rs->ngg_cull_flags_tris_y_inverted = SI_NGG_CULL_ENABLED |
+                                                                     SI_NGG_CULL_FRONT_FACE |
+                                                                     SI_NGG_CULL_BACK_FACE;
+      rs->ngg_cull_flags_lines = SI_NGG_CULL_ENABLED |
+                                 SI_NGG_CULL_LINES;
    } else {
-      rs->ngg_cull_flags = SI_NGG_CULL_ENABLED;
-      rs->ngg_cull_flags_y_inverted = rs->ngg_cull_flags;
+      rs->ngg_cull_flags_tris = rs->ngg_cull_flags_tris_y_inverted = SI_NGG_CULL_ENABLED;
+      rs->ngg_cull_flags_lines = SI_NGG_CULL_ENABLED |
+                                 SI_NGG_CULL_LINES;
 
       bool cull_front, cull_back;
 
@@ -980,13 +982,13 @@ static void *si_create_rs_state(struct pipe_context *ctx, const struct pipe_rast
       }
 
       if (cull_front) {
-         rs->ngg_cull_flags |= SI_NGG_CULL_FRONT_FACE;
-         rs->ngg_cull_flags_y_inverted |= SI_NGG_CULL_BACK_FACE;
+         rs->ngg_cull_flags_tris |= SI_NGG_CULL_FRONT_FACE;
+         rs->ngg_cull_flags_tris_y_inverted |= SI_NGG_CULL_BACK_FACE;
       }
 
       if (cull_back) {
-         rs->ngg_cull_flags |= SI_NGG_CULL_BACK_FACE;
-         rs->ngg_cull_flags_y_inverted |= SI_NGG_CULL_FRONT_FACE;
+         rs->ngg_cull_flags_tris |= SI_NGG_CULL_BACK_FACE;
+         rs->ngg_cull_flags_tris_y_inverted |= SI_NGG_CULL_FRONT_FACE;
       }
    }
 
diff --git a/src/gallium/drivers/radeonsi/si_state.h b/src/gallium/drivers/radeonsi/si_state.h
index d01da541b61..4c5941388ac 100644
--- a/src/gallium/drivers/radeonsi/si_state.h
+++ b/src/gallium/drivers/radeonsi/si_state.h
@@ -76,8 +76,9 @@ struct si_state_rasterizer {
    unsigned pa_cl_clip_cntl;
    float line_width;
    float max_point_size;
-   unsigned ngg_cull_flags : 8;
-   unsigned ngg_cull_flags_y_inverted : 8;
+   unsigned ngg_cull_flags_tris : 8;
+   unsigned ngg_cull_flags_tris_y_inverted : 8;
+   unsigned ngg_cull_flags_lines : 8;
    unsigned sprite_coord_enable : 8;
    unsigned clip_plane_enable : 8;
    unsigned half_pixel_center : 1;
diff --git a/src/gallium/drivers/radeonsi/si_state_draw.cpp b/src/gallium/drivers/radeonsi/si_state_draw.cpp
index e806d8a89ae..c721ce5c532 100644
--- a/src/gallium/drivers/radeonsi/si_state_draw.cpp
+++ b/src/gallium/drivers/radeonsi/si_state_draw.cpp
@@ -2278,13 +2278,15 @@ static void si_draw(struct pipe_context *ctx,
          /* Check that the current shader allows culling. */
          assert(hw_vs->ngg_cull_vert_threshold != UINT_MAX);
 
-         uint8_t ngg_culling = sctx->viewport0_y_inverted ? rs->ngg_cull_flags_y_inverted :
-                                                            rs->ngg_cull_flags;
-         assert(ngg_culling); /* rasterizer state should always set this to non-zero */
+         uint8_t ngg_culling;
 
          if (util_prim_is_lines(sctx->current_rast_prim)) {
             /* Overwrite it to mask out face cull flags. */
-            ngg_culling = SI_NGG_CULL_ENABLED | SI_NGG_CULL_LINES;
+            ngg_culling = rs->ngg_cull_flags_lines;
+         } else {
+            ngg_culling = sctx->viewport0_y_inverted ? rs->ngg_cull_flags_tris_y_inverted :
+                                                       rs->ngg_cull_flags_tris;
+            assert(ngg_culling); /* rasterizer state should always set this to non-zero */
          }
 
          if (ngg_culling != old_ngg_culling) {