Lighting

the shipping news book summary auto body salvage yards the song let the good times roll buy clonazepam industrial engineering chemistry research without a paddle reviews 18 wheeler jobs medical manager sales tn dept of revenue advertising forum free kathryn wise nude men art landscape patio ideas cephalexin schedule d 1 form line restroom we trust wealthy americans ragnorak online characters mississippi paint horse club order hgh she sends york shire dog ancient china the role of woman tech for less inc. n her shoes nursing schools chicago animation tools freeware united airline military discount messy fight men in tights pantone colour systems rave ringtones two week notice format list of famous columbian people i want to make love to you lyrics metroid prime 1 master degree economics social studies games kids wall mounted tables lipitor online meth production by state access bank online us woman wearing sock auction japan cars eu delegation china los angeles department of water and power credit union rc network delay police issue gun violent crime rate by state peace on earth cartoon swedish babes pictures insane games. com utah home foreclosures paper piece patterns suicide machine lyric lock of love foundation mother angelica nude female butt wits end org low carb vegetables northwestern university in evanston il ring tree free hindi ringtones ohio department of corrections free alltel ringtones touch me feel me pelagic environment soldier boys book notes association of licensed practical nurses buy wellbutrin intrusion prevention appliance airline nationwide motion to set aside dismissal asian room designs national household survey on drug abuse safety officer courses examples of compare and contrast essays online forums free american pyramid lysate buffer lodging in granada spain root certificate authority installation antique city furniture kansas twenty years placebo video usb pc lock alltel ringtone old chests lyrics theatre jobs in ireland saute vegetables richmond spa vancouver moon right now tp 2 lyrics nickelodian hotel in orlando alice bruce cooper group michael magic jumps process piping and design 5.1 sound card os x fax software origin of dollar sign

Guides

• Adding Light - A beginners tutorial on how to set up a basic light entity.
• Intermediate Lighting - A tutorial dealing with all the light sources in more detail.
• Advanced Lighting
• Constant-Linear-Quadratic Falloff - An easy-to-read explanation of the old C-L-Q light attenuation system.

Entities

Stationary light sources

• light — a simple omni-directional light
• light_environment — light from toolsskybox materials
• light_spot — a stationary spotlight

Moving light sources

• light_dynamic — a combination point light and spotlight that can be moved, turned, and adjusted.
• npc_spotlight — a spotlight NPC capable of tracking targets.

Other light effect entities

The following entities are primarily just visual effects from light, meaning they do not cast light on their surroundings.

• env_sprite — entity used to create omni-directional glow or flare effects.
• point_spotlight — a moveable spotlight (directional) glow, with an optional dynamic light source.
• env_lightglow — an asymmetrical glow (for areas of contrasting light).
• The models/effects/vol_light001 and models/effects/vol_light002 textures, used for volumetric lighting.
• prop_static — This entity can be used together with the models/Effects/vol_light.mdl model to simulate basic volumetric light.
• env_sun — visual effect of the sun in the sky.
• env_particlelight — only lights particles (such as those produced by env_smokestack).

Common values

City 17 day

Brightness 237 218 143 800

Ambience 190 201 220 100

Ravenholm night

Brightness 175 230 239 50

Ambience 43 45 57 5

Combine lamp

Brightness 147 226 240 3000

Ambience N/A

For values to accompany the stock skybox materials, see Sky List.

Notes

• Naming a light makes it more expensive. Only name lights when you need to. Multiple lights sharing the same name are cheaper than lights with separate names.
• light_dynamic is especially expensive, and will not even show up on some systems
• The basic light entities do not come with a visible representation (eg, a lightbulb). For that you need a prop. See HL2 light props for a list.
• The basic light entities do not come with a "glow" as you'd expect to see in a foggy or misty area. To provide this, either compile and run the map with HDR enabled, or add a point_spotlight (with dynamic lighting off unless needed) or env_lightglow entity.
• Maps will not be lit unless you run vrad (or equivalent). Vrad will not run properly unless the level is free of leaks.
• Several textures provide their own light & can do so using lights.rad in a mod's directory or the one in sourcesdk/bin.
• Experiment by burning light onto motion enabled entities/objects. i.e. func_rotating with shadows disabled may look odd, func_tracktrain spawned with normal light, etc.

Console commands

• mat_fullbright boolean — Toggles map lighting

See also

• HL2 light props
• Color theory (level design)
• Light entities - A list of light entities.

External links

• Understanding and Using Lightmaps - Tutorial
• Volumetric Lighting - Tutorial
• Lighting Tutorial - Covers entities & variables with examples
• Quadratic/Linear/Constant in Lights