Lights

Lights define scene illumination and can be baked or evaluated at render time.

How it works

• Types: directional, point, spot; IES photometrics and area lights in some formats.
• Parameters: color, intensity/units, range, cone angles, shadow settings.
• Environment/IBL uses HDR maps for image-based lighting.

Interoperability notes

• Intensity units differ (lux, cd, exposure). Expect to tweak after import.
• Some formats don’t carry all light properties; engines fill defaults.
• For real-time, prefer physically-based intensities and HDR environments.