thebookofshaders/glossary/const.md

## Const
Constant qualifier

### Example
```glsl
const float PI = 3.14159265359;
```

### Description
```const``` qualifier can be applied to the declaration of any variable to specify that its value will not be changed.

### See also
[attribute](index.html#attribute.md), [uniform](index.html#uniform.md), [varying](index.html#varying.md)