CEnvTonemapController

controls the tonemapping for the player. Think of it as a method of controlling the exposure of the player's eyes.

Classnames:
 * - Used in Versus mode for zombie players that have not physically spawned into active gameplay yet.
 * - Used in Versus mode for zombie players that have physically spawned into active gameplay.
 * - Used in Versus mode for zombie players that have physically spawned into active gameplay.

Tonemapping affects all players at once in multiplayer. HDR settings should normally be changed through triggers, whenever transitioning between environments of different light levels.