testsuite: Fix gsk test

The repeated tests were not careful enough to produce
the correct reference image to match what the repeat
node does.

With these changes, all cairo tests pass.

testsuite/gsk/compare-render.c

@@ -115,6 +115,20 @@ save_image (GdkTexture *texture,
   g_free (filename);
 }
 
+static void
+save_node (GskRenderNode *node,
+           const char    *test_name,
+           const char    *extension)
+{
+  char *filename = get_output_file (test_name, ".node", extension);
+  gboolean result;
+
+  g_print ("Storing modified nodes at %s\n", filename);
+  result = gsk_render_node_write_to_file (node, filename, NULL);
+  g_assert_true (result);
+  g_free (filename);
+}
+
 static void
 deserialize_error_func (const GskParseLocation *start,
                         const GskParseLocation *end,
@@ -278,6 +292,7 @@ main (int argc, char **argv)
 
       if (diff_texture)
         {
+          save_node (node2, node_file, "-flipped.node");
           save_image (diff_texture, node_file, "-flipped.diff.png");
           g_object_unref (diff_texture);
           success = FALSE;
@@ -291,36 +306,55 @@ main (int argc, char **argv)
   if (repeat)
     {
       GskRenderNode *node2;
-      GdkPixbuf *pixbuf, *pixbuf2;
+      GdkPixbuf *pixbuf, *pixbuf2, *pixbuf3;
       int width, height;
       graphene_rect_t node_bounds;
       graphene_rect_t bounds;
+      float offset_x, offset_y;
 
       gsk_render_node_get_bounds (node, &node_bounds);
+
+      if (node_bounds.size.width > 32768. || node_bounds.size.height > 32768.)
+        {
+          g_print ("Avoiding repeat test that exceeds cairo image surface dimensions");
+          exit (77);
+        }
+
       bounds.origin.x = 0.;
       bounds.origin.y = 0.;
       bounds.size.width = 2 * node_bounds.size.width;
       bounds.size.height = 2 * node_bounds.size.height;
 
+      offset_x = floorf (fmodf (node_bounds.origin.x, node_bounds.size.width));
+      offset_y = floorf (fmodf (node_bounds.origin.y, node_bounds.size.height));
+      if (offset_x < 0)
+        offset_x += node_bounds.size.width;
+      if (offset_y < 0)
+        offset_y += node_bounds.size.height;
+
       node2 = gsk_repeat_node_new (&bounds, node, &node_bounds);
       rendered_texture = gsk_renderer_render_texture (renderer, node2, NULL);
-
       save_image (rendered_texture, node_file, "-repeated.out.png");
 
       pixbuf = gdk_pixbuf_new_from_file (png_file, &error);
+
       width = gdk_pixbuf_get_width (pixbuf);
       height = gdk_pixbuf_get_height (pixbuf);
       pixbuf2 = gdk_pixbuf_new (gdk_pixbuf_get_colorspace (pixbuf),
                                 gdk_pixbuf_get_has_alpha (pixbuf),
                                 gdk_pixbuf_get_bits_per_sample (pixbuf),
-                                width * 2,
-                                height * 2);
-      gdk_pixbuf_copy_area (pixbuf, 0, 0, width, height, pixbuf2, 0, 0);
-      gdk_pixbuf_copy_area (pixbuf, 0, 0, width, height, pixbuf2, width, 0);
-      gdk_pixbuf_copy_area (pixbuf, 0, 0, width, height, pixbuf2, 0, height);
-      gdk_pixbuf_copy_area (pixbuf, 0, 0, width, height, pixbuf2, width, height);
+                                width * 3,
+                                height * 3);
 
-      reference_texture = gdk_texture_new_for_pixbuf (pixbuf2);
+      for (int i = 0; i < 3; i++)
+        for (int j = 0; j < 3; j++)
+          gdk_pixbuf_copy_area (pixbuf, 0, 0, width, height, pixbuf2, i * width,  j * height);
+
+      pixbuf3 = gdk_pixbuf_new_subpixbuf (pixbuf2, width - (int) offset_x, height - (int) offset_y, 2 * width, 2 * height);
+
+      reference_texture = gdk_texture_new_for_pixbuf (pixbuf3);
+
+      g_object_unref (pixbuf3);
       g_object_unref (pixbuf2);
       g_object_unref (pixbuf);
 
@@ -330,6 +364,7 @@ main (int argc, char **argv)
 
       if (diff_texture)
         {
+          save_node (node2, node_file, "-repeated.node");
           save_image (diff_texture, node_file, "-repeated.diff.png");
           g_object_unref (diff_texture);
           success = FALSE;
@@ -362,6 +397,7 @@ main (int argc, char **argv)
 
       if (diff_texture)
         {
+          save_node (node2, node_file, "-rotated.node");
           save_image (diff_texture, node_file, "-rotated.diff.png");
           g_object_unref (diff_texture);
           success = FALSE;

testsuite/gsk/compare/border-one-rounded.node

@@ -0,0 +1,23 @@
+border {
+  outline: 0 0 50 50 / 0 0 0 20;
+}
+color {
+  bounds: 0 29 4 11;
+  color: rgb(255,192,203);
+}
+color {
+  bounds: 2 40 4 4;
+  color: rgb(255,192,203);
+}
+color {
+  bounds: 4 42 4 4;
+  color: rgb(255,192,203);
+}
+color {
+  bounds: 6 44 4 4;
+  color: rgb(255,192,203);
+}
+color {
+  bounds: 9 46 11 4;
+  color: rgb(255,192,203);
+}