Update

druid/materials/gui_world/gui_world.fp

@@ -0,0 +1,10 @@
+varying mediump vec2 var_texcoord0;
+varying lowp vec4 var_color;
+
+uniform lowp sampler2D texture_sampler;
+
+void main()
+{
+    lowp vec4 tex = texture2D(texture_sampler, var_texcoord0.xy);
+    gl_FragColor = tex * var_color;
+}