From 07e6219704b6a0a8432ee6ae47ad54c83f734dbb Mon Sep 17 00:00:00 2001
From: Adel Gadllah <adel.gadllah@gmail.com>
Date: Thu, 24 Jul 2014 15:40:19 +0200
Subject: [PATCH] lightbox: Do not assume GLSL is available

Some hardware does not support it causing crashes in cogl during paint.

https://bugzilla.gnome.org/show_bug.cgi?id=733623
---
 js/ui/lightbox.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/js/ui/lightbox.js b/js/ui/lightbox.js
index 4b07debad..2188b23b3 100644
--- a/js/ui/lightbox.js
+++ b/js/ui/lightbox.js
@@ -105,8 +105,8 @@ const Lightbox = new Lang.Class({
         this._container = container;
         this._children = container.get_children();
         this._fadeFactor = params.fadeFactor;
-        this._radialEffect = params.radialEffect;
-        if (params.radialEffect)
+        this._radialEffect = Clutter.feature_available(Clutter.FeatureFlags.SHADERS_GLSL) && params.radialEffect;
+        if (this._radialEffect)
             this.actor = new RadialShaderQuad({ x: 0,
                                                 y: 0,
                                                 reactive: params.inhibitEvents });