[gtk+/wip/matthiasc/gsk-renderer] gsk: Improve debug output a bit

[Matthias Clasen <matthiasc src gnome org>]

commit a3fd90bb6769b110e66253052be8f8d15d782166
Author: Matthias Clasen <mclasen redhat com>
Date:   Tue Aug 2 21:08:52 2016 -0400

    gsk: Improve debug output a bit
    
    Reflect the tree structure in the indentation, and avoid
    the matrices.

 gsk/gskglrenderer.c |   20 ++++++++++++++++----
 1 files changed, 16 insertions(+), 4 deletions(-)
---
diff --git a/gsk/gskglrenderer.c b/gsk/gskglrenderer.c
index 22e1558..95d491e 100644
--- a/gsk/gskglrenderer.c
+++ b/gsk/gskglrenderer.c
@@ -359,6 +359,18 @@ gsk_gl_renderer_update_frustum (GskGLRenderer           *self,
 
 #define N_VERTICES      6
 
+static inline int
+node_depth (GskRenderNode *node)
+{
+  int ret = 0;
+  while (node->parent)
+    {
+      ret++;
+      node = node->parent;
+    }
+  return ret;
+}
+
 static void
 render_item (GskGLRenderer *self,
              RenderItem    *item)
@@ -406,12 +418,12 @@ render_item (GskGLRenderer *self,
   glUniform1f (item->render_data.alpha_location, opacity);
 
   /* Pass the mvp to the vertex shader */
-  GSK_NOTE (OPENGL, graphene_matrix_print (&item->mvp));
   graphene_matrix_to_float (&item->mvp, mvp);
   glUniformMatrix4fv (item->render_data.mvp_location, 1, GL_FALSE, mvp);
 
   /* Draw the quad */
-  GSK_NOTE (OPENGL, g_print ("Drawing item <%s>[%p] (w:%g, h:%g) with opacity: %g\n",
+  GSK_NOTE (OPENGL, g_print ("%*sDrawing item <%s>[%p] (w:%g, h:%g) with opacity: %g\n",
+                             2 * node_depth (item->node), "",
                              item->name,
                              item,
                              item->size.width, item->size.height,
@@ -455,7 +467,6 @@ render_item (GskGLRenderer *self,
       glUniform1f (item->render_data.alpha_location, item->opacity);
 
       /* Pass the mvp to the vertex shader */
-      GSK_NOTE (OPENGL, graphene_matrix_print (&item->mvp));
       graphene_matrix_to_float (&item->mvp, mvp);
       glUniformMatrix4fv (item->render_data.mvp_location, 1, GL_FALSE, mvp);
 
@@ -704,7 +715,8 @@ gsk_gl_renderer_add_render_item (GskGLRenderer *self,
                                                self->gl_mag_filter);
     }
 
-  GSK_NOTE (OPENGL, g_print ("Adding node <%s>[%p] to render items\n",
+  GSK_NOTE (OPENGL, g_print ("%*sAdding node <%s>[%p] to render items\n",
+                             2 * node_depth (node), "",
                              node->name != NULL ? node->name : "unnamed",
                              node));
   g_array_append_val (render_items, item);