Advanced

This page covers advanced technical details including URP rendering requirements, automatic configuration validation and global shader properties.

URP Depth Texture Requirement

Requires the Depth Texture feature to be enabled in the Universal Render Pipeline (URP) asset for proper functionality.

Automatic Validation

An automatic validator checks and enables the Depth Texture setting when the project loads in the Unity Editor. If disabled, the validator will:

1. Automatically enable Depth Texture in your active URP asset
2. Save the changes to the asset
3. Display a warning message in the Console with a reference to the modified asset

Warning

Disabling the Depth Texture after it has been automatically enabled may cause the fog effect to not render correctly.

Global Shader Properties

Global shader properties are used to communicate with shaders. These properties are automatically set by the FogOfWarManager and can be accessed in custom shaders.

Property Name	Type	Description
_FogOfWar_Enabled	half	Fog enabled state: 0 = disabled, 1 = enabled
_FogOfWar_OrientationXZ	float	Map orientation: 0 = XY plane, 1 = XZ plane
_FogOfWar_MapOffset	Vector2	The center point of the map bounds in world space
_FogOfWar_MapSize	Vector2	The dimensions of the map (width and height)
_FogOfWar_MapSize_Inv	Vector2	Inverse of map size (1 / _FogOfWar_MapSize) for optimized calculations
_FogOfWar_MaskTexture	Texture2D	Mask texture containing visibility data (R: discovered, G: visible)
_FogOfWar_UnexploredFogTexture	Texture2D	Texture for unexplored fog areas
_FogOfWar_UnexploredFogColor	Vector3	Color tint for unexplored fog in linear color space
_FogOfWar_ExploredFogTexture	Texture2D	Texture for explored but not currently visible areas
_FogOfWar_ExploredFogColor	Vector4	Color and alpha for explored fog areas (RGB: color, A: alpha)