Level Of Detail (LOD) Ranges
Level of detail (LOD) ranges are controlled several properties in FlightGear, with the below default values.
Scenery ranges
Note The LOD ranges are only set during the scenery loading process. Therefore a scenery reload may be required to change the currently loaded tiles. |
Property | Default | Description |
---|---|---|
sim/rendering/static-lod/detailed |
1500 m | All objects (buildings etc) display withing this range.
|
/sim/rendering/static-lod/rough |
7500 m | Terrain and non terrain objects will be displayed within this range, as follows:
The actual visibility range is randomly distributed from |
/sim/rendering/static-lod/bare |
21000 m | Only terrain after this point |
AI/MP ranges
Note For a while now FG supports size based LOD - this is the size of the model on screen in pixels and can be configured in the static lod dialog. All models should have an assigned fallback model; this is a low detail model that can be used for models that are further away.[1] |
AI/MP models (other models that aren't being flown/operated by the user) have two models. The first of these is the low detail (or fallback) model, which can be defined by an model developer (sim/model/fallback-model-index
) as one of the values in $FGData/AI/Aircraft/fallback_models.xml
. When there is no fallback model defined for a model the blue-yellow glider will be used.
AI/MP ranges can either bet set as pixels of the object on screen, or distance from the viewer in meters. This is controlled by the /sim/rendering/static-lod/aimp-range-mode-distance
property.
Property | Default | Description |
---|---|---|
/sim/rendering/static-lod/aimp-range-mode-distance |
false | Configures the range mode:
|
/sim/rendering/static-lod/aimp-detailed |
400 px | This property works differently depending on the range mode.
|
/sim/rendering/static-lod/aimp-bare |
0 px | This property works differently depending on the range mode.
|
/sim/rendering/static-lod/aimp-interior
|
200m | Range at which to display the model interior (when the model has a mesh defined as being the interior). |
Related content
Wiki articles
- FlightGear configuration via XML. See in particular the section Adding your own settings.
Forum topics
- 3d models, how to produce them in an understandable way topic on the forum (April 2020-) - Touches on the subject of not using LOD range animations in scenery models.
Source code
- flightgear/fgdata/next/defaults.xml. Do not change this file, rather follow these instructions.
- flightgear/simgear/next/simgear/scene