A room for the light.

Two movable world-space lights are encoded live into 27 RGB SH coefficients, then reconstructed across the gallery.

Soft environment 9 IRRADIANCE COEFFICIENTS

Directional functions DRAG SPHERES TO ROTATE

Y_1,1(ω)

− negative0+ positive

One-bounce GINOT BAKED

Indirect intensity2.50×

Exposure0.00 EV

Rendering pipelineLIGHT × COSINE × VISIBILITY

SH lighting9 directional coefficients Light colorRGB SH coefficients Cosine diffuseBand convolution Surface visibilityRay-baked floor transfer Probe volumeShow 3D sample positions Contact patchesOptional artistic layer

Lighting field0°

Rotation

SH light encoderTABLE / SCENE ORIGIN

Light Enabled X position Y position Z position Intensity Focus Color

x −4.80 / y 4.20 / z 3.00

Encoded RGB coefficients

Light direction −40° / 55°

Azimuth Elevation Intensity

Scene surface valueSH approximation

DIFFUSE IRRADIANCE / COSINE-WEIGHTED HEMISPHERE

Reconstruction orderOrder 2 / 9 coefficients

c_0,00.00 c_1,−10.00 c_1,00.00 c_1,10.00 c_2,−20.00 c_2,−10.00 c_2,00.00 c_2,10.00 c_2,20.00

This first-order basis changes sign across the x axis. Gray is exactly zero.

Y_l,m(ω) is a fixed pattern on the sphere

08 / SOFT-LIGHT SHOWCASE