From 95dba930461abc8defa006bb1d1757af95aefdef Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Florian=20M=C3=BCllner?= <fmuellner@gnome.org>
Date: Fri, 30 Jun 2017 00:06:53 +0200
Subject: [PATCH] st: Don't try to create shadow for empty texture

Even though the API documentation doesn't say so, the underlying
Cogl texture of a ClutterTexture may be unset, so check for that
case to avoid a runtime warning.

https://bugzilla.gnome.org/show_bug.cgi?id=784353
---
 src/st/st-private.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/st/st-private.c b/src/st/st-private.c
index b00a2bdd7..0db257aa2 100644
--- a/src/st/st-private.c
+++ b/src/st/st-private.c
@@ -420,7 +420,8 @@ _st_create_shadow_pipeline_from_actor (StShadow     *shadow_spec,
       CoglTexture *texture;
 
       texture = clutter_texture_get_cogl_texture (CLUTTER_TEXTURE (actor));
-      shadow_pipeline = _st_create_shadow_pipeline (shadow_spec, texture);
+      if (texture)
+        shadow_pipeline = _st_create_shadow_pipeline (shadow_spec, texture);
     }
   else
     {