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Document distant fog Make colored topic functionality documentation clearer Update the status of screenshot format tweakability
115 lines
3.7 KiB
ReStructuredText
115 lines
3.7 KiB
ReStructuredText
Fog Settings
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############
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use distant fog
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---------------
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:Type: boolean
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:Range: True/False
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:Default: False
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This setting overhauls the behavior of fog calculations.
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Normally the fog start and end distance are proportional to the viewing distance
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and use the fog depth set in the fallback settings.
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Enabling this setting separates the fog distance from the viewing distance and fallback settings and makes fog distance
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and apparent density dependent on the weather and the current location according to the settings below.
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Unfortunately specific weather-dependent fog factor and offset parameters are currently hard-coded.
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They are based off the default settings of MGE XE.
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+--------------+------------+--------+
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| Weather Type | Fog Factor | Offset |
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+==============+============+========+
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| Clear | 1.0 | 0.0 |
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+--------------+------------+--------+
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| Cloudy | 0.9 | 0.0 |
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+--------------+------------+--------+
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| Foggy | 0.2 | 0.3 |
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+--------------+------------+--------+
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| Overcast | 0.7 | 0.0 |
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+--------------+------------+--------+
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| Rain | 0.5 | 0.1 |
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+--------------+------------+--------+
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| Thunderstorm | 0.5 | 0.2 |
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+--------------+------------+--------+
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| Ashstorm | 0.2 | 0.5 |
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+--------------+------------+--------+
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| Blight | 0.2 | 0.6 |
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+--------------+------------+--------+
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| Snow | 0.5 | 0.4 |
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+--------------+------------+--------+
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| Blizzard | 0.16 | 0.7 |
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+--------------+------------+--------+
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Non-underwater fog start and end distance are calculated like this according to these parameters::
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fog start distance = fog factor * (base fog start distance - fog offset * base fog end distance)
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fog end distance = fog factor * (1.0 - fog offset) * base fog end distance
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Underwater fog distance is used as-is.
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A negative fog start distance means that the fog starts behind the camera
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so the entirety of the scene will be at least partially fogged.
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A negative fog end distance means that the fog ends behind the camera
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so the entirety of the scene will be completely submerged in the fog.
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Fog end distance should be larger than the fog start distance.
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This setting and all further settings can only be configured by editing the settings configuration file.
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distant land fog start
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----------------------
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:Type: floating point
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:Range: The whole range of 32-bit floating point
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:Default: 16384 (2 cells)
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This is the base fog start distance used for distant fog calculations in exterior locations.
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distant land fog end
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--------------------
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:Type: floating point
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:Range: The whole range of 32-bit floating point
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:Default: 40960 (5 cells)
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This is the base fog end distance used for distant fog calculations in exterior locations.
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distant underwater fog start
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----------------------------
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:Type: floating point
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:Range: The whole range of 32-bit floating point
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:Default: -4096
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This is the base fog start distance used for distant fog calculations in underwater locations.
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distant underwater fog end
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--------------------------
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:Type: floating point
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:Range: The whole range of 32-bit floating point
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:Default: 2457.6
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This is the base fog end distance used for distant fog calculations in underwater locations.
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distant interior fog start
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--------------------------
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:Type: floating point
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:Range: The whole range of 32-bit floating point
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:Default: 0
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This is the base fog start distance used for distant fog calculations in interior locations.
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distant interior fog end
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------------------------
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:Type: floating point
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:Range: The whole range of 32-bit floating point
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:Default: 16384 (2 cells)
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This is the base fog end distance used for distant fog calculations in interior locations.
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