[[File:als secondary light.png|640px|thumbnail|Proof of Concept]]
The ALS Landing Lights\Spotlight (we'll call it ALS Lights from now on) is a good example for showing how to incorporate a shader effect into [[Flightgear]] as it touches many parts of the visuals we see and many parts of the coding pipeline.
=== Program Flow Simplified ===
Some of this data may play a duel role inside the shader program. In other words it might be used to control other functions in addition to ALS Lights.
==== Shader Program ====
==== Uniforms ====