rendernodes: Enfore end > start for radial gradient nodes

diff --git a/gsk/gskrendernodeimpl.c b/gsk/gskrendernodeimpl.c
index efb49738b92dbffd2a075e67f91fdc76b87d1402..45734b55993d611f00801dac472976ce1414bc22 100644 (file)
--- a/gsk/gskrendernodeimpl.c
+++ b/gsk/gskrendernodeimpl.c
@@ -510,6 +510,7 @@ gsk_radial_gradient_node_new (const graphene_rect_t  *bounds,
   g_return_val_if_fail (vradius > 0., NULL);
   g_return_val_if_fail (start >= 0., NULL);
   g_return_val_if_fail (end >= 0., NULL);
+  g_return_val_if_fail (end > start, NULL);
   g_return_val_if_fail (color_stops != NULL, NULL);
   g_return_val_if_fail (n_color_stops >= 2, NULL);
   g_return_val_if_fail (color_stops[0].offset >= 0, NULL);
@@ -555,6 +556,7 @@ gsk_repeating_radial_gradient_node_new (const graphene_rect_t  *bounds,
   g_return_val_if_fail (vradius > 0., NULL);
   g_return_val_if_fail (start >= 0., NULL);
   g_return_val_if_fail (end >= 0., NULL);
+  g_return_val_if_fail (end > start, NULL);
   g_return_val_if_fail (color_stops != NULL, NULL);
   g_return_val_if_fail (n_color_stops >= 2, NULL);
   g_return_val_if_fail (color_stops[0].offset >= 0, NULL);