okamstudio/godot — pull request #297 by sanikoyes (2014-04-16 11:37:55+00:00)
Title: Draw gray block into atlas image preview

Draw some gray blocks on preview atlas texture, look's like this:
![image](https://cloud.githubusercontent.com/assets/6880378/2719133/78ad2810-c55b-11e3-8c78-7c74da07c8d7.png)