func_occluder

From Valve Developer Community

func_occluder is a brush entity available in all Source games. It hides models that are entirely covered by it in the player's view, according to how it has been textured. They are used to control visibility in places where func_areaportals or world brushes are unsuitable.

Contents 1 Usage 1.1 Texturing 1.2 Occuders and Areaportals 1.3 Debugging commands 2 Keyvalues 3 Inputs 4 Outputs

Usage

Texturing

This entity works according to how materials has been applied to it:

• All sides covered with the occluder or trigger materials will occlude.
• All sides covered with the skip or nodraw materials, will not occlude.

Occuders and Areaportals

There are several important differences between occluders and areaportals:

• An occluder only hides props, not world geometery or static brushes.
• An occluder does not split visleaves.
• An occluder can be free standing and does not need to separate two areas.

Debugging commands

r_occlusion

Activate/deactivate the occlusion system.

r_visocclusion

Activate/deactivate wireframe rendering of what the occlusion system is doing.

r_drawpixelvisibility

Show the occlusion proxies

r_occludeemaxarea

Prevents occlusion testing for entities that take up more than X% of the screen. 0 means use whatever the level said to use.

r_occluderminarea

Prevents this occluder from being used if it takes up less than X% of the screen. 0 means use whatever the level said to use.

r_occlusionspew

Activate/deactivates spew about what the occlusion system is doing.

r_occludermincount

At least this many occluders will be used, no matter how big they are.

Keyvalues

Start Active <bool>

If the entity starts inactive, use the Activate or Toggle inputs to turn it on.

Targetname:

Inputs

Activate

Deactivate

Toggle

Control the state of the occluder.

Targetname:

Outputs

Targetname: