isEyeInWater

uniform int isEyeInWater;

This uniform outputs the current substance that the camera is in. Possible values are 0, 1, 2, and 3. The value 0 denotes the camera being in none of the recognized substances. The value 1 denotes the camera being submerged in water. The value 2 means that the camera is in lava. The value 3 means that the camera is currently in powdered snow.