inspector: learn about new nodes

Whenever we add a new kind of render node, the inspector needs
to be updated, or it crashes. Somewhat annoying.

gtk/inspector/gtktreemodelrendernode.c

@@ -534,6 +534,13 @@ append_node (GtkTreeModelRenderNode *nodemodel,
       /* no children */
       break;
 
+    case GSK_PIXEL_SHADER_NODE:
+      if (gsk_pixel_shader_node_get_child1 (node))
+        append_node (nodemodel, gsk_pixel_shader_node_get_child1 (node), priv->nodes->len - 1);
+      if (gsk_pixel_shader_node_get_child2 (node))
+        append_node (nodemodel, gsk_pixel_shader_node_get_child2 (node), priv->nodes->len - 1);
+      break;
+
     case GSK_TRANSFORM_NODE:
       append_node (nodemodel, gsk_transform_node_get_child (node), priv->nodes->len - 1);
       break;

gtk/inspector/recorder.c

@@ -189,6 +189,8 @@ node_type_name (GskRenderNodeType type)
       return "Text";
     case GSK_BLUR_NODE:
       return "Blur";
+    case GSK_PIXEL_SHADER_NODE:
+      return "Pixel Shader";
     }
 }