

Switch rapidly between images for animgif effect.
So unlike my previous attempt at this, the info texture is plugged into a fog shader.
It adds a dark fog to the out-of-los areas, and static noise to areas not covered by radar.
So there are two possible ways for this to be done:
1. Through the terrain shader (previous attempt)
Pros:
- Faster
- Better looking effects (like desaturation, hue shifts, etc)
Cons:
- Static and hard to modify (because its engine shader, hard to plug new things into it)
- only effects terrain
2. Through a depth shader gadget as shown here
Pros:
- Each mod can easily customize the way it looks
- No significant engine code needed
- Effects everything (map, grass, water surface, features)
- Allows map border fog
Cons:
- Slower
- limited set of effects (basically a transparent image overlay)
- will interact badly with map fog effect