diff --git a/gsk/gpu/gskgpuprint.c b/gsk/gpu/gskgpuprint.c
index 6300376973..d81b376f2e 100644
--- a/gsk/gpu/gskgpuprint.c
+++ b/gsk/gpu/gskgpuprint.c
@@ -15,10 +15,17 @@ gsk_gpu_print_indent (GString *string,
 
 void
 gsk_gpu_print_shader_flags (GString           *string,
-                            GskGpuShaderFlags  flags)
+                            GskGpuShaderFlags  flags,
+                            gboolean           first)
 {
   GskGpuShaderClip clip = gsk_gpu_shader_flags_get_clip (flags);
 
+  g_string_append (string, first ? "+ " : "| ");
+#if 0
+  g_string_append (string, first ? (last ? "⧫ " : "▲ ") 
+                                 : (last ? "▼ " : "▮ "));
+#endif
+
   switch (clip)
     {
       case GSK_GPU_SHADER_CLIP_NONE:
diff --git a/gsk/gpu/gskgpuprintprivate.h b/gsk/gpu/gskgpuprintprivate.h
index c8359d0b47..1fd2615e4f 100644
--- a/gsk/gpu/gskgpuprintprivate.h
+++ b/gsk/gpu/gskgpuprintprivate.h
@@ -18,7 +18,8 @@ void                    gsk_gpu_print_newline                           (GString
 void                    gsk_gpu_print_string                            (GString                        *string,
                                                                          const char                     *s);
 void                    gsk_gpu_print_shader_flags                      (GString                        *string,
-                                                                         GskGpuShaderFlags               flags);
+                                                                         GskGpuShaderFlags               flags,
+                                                                         gboolean                        first);
 void                    gsk_gpu_print_color_states                      (GString                        *string,
                                                                          GskGpuColorStates               color_states);
 void                    gsk_gpu_print_enum                              (GString                        *string,
diff --git a/gsk/gpu/gskgpushaderop.c b/gsk/gpu/gskgpushaderop.c
index 874f533e10..34a70ef8ba 100644
--- a/gsk/gpu/gskgpushaderop.c
+++ b/gsk/gpu/gskgpushaderop.c
@@ -52,7 +52,7 @@ gsk_gpu_shader_op_print (GskGpuOp    *op,
   for (i = 0; i < self->n_ops; i++)
     {
       gsk_gpu_print_op (string, indent, shader_name);
-      gsk_gpu_print_shader_flags (string, self->flags);
+      gsk_gpu_print_shader_flags (string, self->flags, i == 0);
       gsk_gpu_print_color_states (string, self->color_states);
       shader_class->print_instance (self,
                                     instance + i * shader_class->vertex_size,