|Short description:||Creates occlusion culling zones|
occl is a section in the item placement file in Grand Theft Auto: Vice City, Grand Theft Auto: San Andreas, and Grand Theft Auto IV. It is used to create occlusion culling zones that helps make the game run smoother in certain parts of the world. Since it is wasteful to render models behind opaque models, these zones can disable the rendering of any models that are directly behind the zones.
GTA Vice City
occl MidX, MidY, BottomZ, WidthX, WidthY, Height, Rotation end
The section is used in the
\data\occlu.ipl file but it can be used in any IPL files.
GTA San Andreas
The section is used in
occl MidX, MidY, BottomZ, WidthX, WidthY, Height, Rotation, , , end
When removing buildings from the world, you may see unexpected pop ups caused by existing occlusion zones. Deleting all the occlusion zones is the easiest solution. An example of this issue is the Liberty City project. Before this section was researched, the team experienced unexpected pop ups with models loading and unloading behind areas where Vice City's buildings used to be. Someone realized that the
occlu.ipl was the problem and deleted every line in that file. The pop ups disappeared and the issue was resolved.
Total number of
occl entries in:
- GTA Vice City: 344 (max 350)