CHUNKY – quick FIX missing textures / textures not rendering

1. In the right pane of Chunky select OPTIONS tab and “edit resource packs” button.
2. Click ADD and navigate to .minecraft/versions/(your world’s version) and select the JAR file.
3. Click APPLY to apply the textures.
4. Troubleshooting: RELOAD the world. Make sure “Disable default textures” in unchecked.

Chunky rendering tutorial

CHUNKY tutorial – start to end text-based introduction to rendering – Premium Minecraft Blog