renderer: return_if_fail() if the given texture size is 0

All renderers SEGV currently when that happens.

diff --git a/gsk/gskrenderer.c b/gsk/gskrenderer.c
index 3ff7c6abdd75a41f2ed2a4e5e92aa4a5893dc918..8e0117f502097d91b1813ae02a2ba52405e4f55f 100644 (file)
--- a/gsk/gskrenderer.c
+++ b/gsk/gskrenderer.c
@@ -372,6 +372,8 @@ gsk_renderer_render_texture (GskRenderer           *renderer,
       gsk_render_node_get_bounds (root, &real_viewport);
       viewport = &real_viewport;
     }
+  g_return_val_if_fail (viewport->size.width > 0, NULL);
+  g_return_val_if_fail (viewport->size.height > 0, NULL);
 
   texture = GSK_RENDERER_GET_CLASS (renderer)->render_texture (renderer, root, viewport);