03 / LIGHT + MATERIAL

Light belongs
to the Scene.

A new Component must look illuminated by the world, not pasted over it. Lighting metadata is part of every asset contract.

5-part receiving model

WORLD
ORIGIN

UNIVERSAL AUTHORING RIG

Neutral enough to travel.

Ambient · 18–28% Scene color, never neutral gray.
Directional · warm upper-left key at azimuth 315°, elevation 42°.
Local · component emitters use physical falloff and declared range.
Rim · cool upper-right separation, 8–14% strength.
Reflection · brass, glass, water and cream fabric pick up nearby Scene color.

SEMANTIC PALETTE

Roles, not decoration.

Architectural dark

#080706

peripheral depth

Espresso

#17100B

warm shadow body

Warm umber

#4A2F1D

wood and reflected warmth

Aged brass

#A8732A

structure and trusted affordance

Sun gold

#D9A64A

environmental illumination

Candle gold

#FFD984

local inhabited light

Moon cream

#F2E8D5

cool-neutral highlight

Enamel teal

#0E4542

identity-bearing inset

Vegetation shadow

#17251B

living depth

Vegetation light

#73804B

sun-touched foliage

Atmospheric blue

#668A93

distance and cool fill

Portal sky

#A8E6EC

possibility and transition

MATERIAL CONSTITUTION

Recognizable at every scale.

Stone

broad value blocks · chipped edges · restrained specular

Wood

directional grain · eased corners · warm reflection

Brass

aged midtone · bright rubbed edges · never chrome

Enamel

deep teal body · glasslike inset · sparse hairline wear

Glass

environment-colored transmission · readable rim · low glare

Textile

soft value rolloff · visible weave at focus scale

Foliage

clustered planes · cool interior · warm edge translucency

Water

sky reflection + local depth color · calm motion hierarchy

Fire

bright core · amber body · smoke inherits Scene atmosphere

Required asset channels

RGBA color · contact shadow · optional cast-shadow mask · emission mask · material regions · occlusion volume · receivesLight / emitsLight flags.