Scene graph

Material studies

Marble, wood, and a gradient.

● Jade sphere Sphere

● Blue ellipsoid Sphere

◆ Ochre box Box

▦ Ground Plane

Inspector

Select an object.

Render options

Renderer backend

Full feature support · multicore JavaScript

Intersection mode Scene time 0.00

Sampling effects

Depth of field Aperture radius 0.18 Focus distance 7.2 Motion blur Shutter duration 0.00 Area lights Area size multiplier 1.00 Rough reflection / transmission Roughness multiplier 1.00 Diffuse bounces

Presets supply the lights, motion, and materials. Toggles isolate their effects. Shutter starts at Scene time.

Volumes

Enable volumes Single scattering Scattering distanceSamples per volume interval

Noise fields and curved paths use marching. Extinction remains deterministic.

March step (world units) Maximum steps per volume ray

Smaller steps resolve finer detail. At the budget limit, larger steps cover the full path. Single scattering off retains absorption and out-scattering.

Curved rays · experimental

Bend rays in volumes Maximum curve step Curve step budget Path distance limit

Set bendStrength on a volume: positive attracts, negative repels. Smaller steps improve accuracy. Limited paths stop dark; increase budgets if needed. Light connections stay straight.

Maximum ray depth Render width default Scene camera preset Light intensity 85 Workers Tile size Glass shadows Shadow boundary limit

Transparent shadows multiply tint at each surface. Straight-through rays stay straight. Photon caustics trace refracted and reflected light paths.

Photons per iterationInitial caustic radiusRadius refinement

Photon mode supports finite/HDR lights, textures, closed optical meshes, motion and volume attenuation. Bent rays and screen-position selectors are unsupported. Imported open meshes stay thin; mesh booleans are unsupported. Smaller radii sharpen caustics but need more photons. Refinement 1 keeps the radius fixed; lower values shrink it. Ray inspection shows camera/direct paths; photon light paths are a separate estimate.

Area-light positionsRough bounce directionsSecondary branches

Probability compensation preserves mean brightness. Rough guiding requires HDR lighting and straight paths; sampling one branch trades rays for noise.

Light sampling Lights sampled per shading point

Weighted selection saves shadow rays in scenes with many lights; fewer samples can add noise.

Sample pattern Sample limit

Exposure 0.0 EV

Info

Active render

Preparing…

Photon progress: —
Sampling: 0 samples / pixel
Workers: —
Throughput: —
GPU setup: —
First tile: —
Intersections: BVH
Lighting: Phong + shadows
GPU limited paths: 0
Secondary rays: —
Box tests: —
Curve steps: 0
Limited paths: 0
Volume steps: 0
Volume light rays: 0
Coarsened intervals: 0
Triangle tests: —
Object tests: —

Workers share the tiles, one sample per pass. Auto leaves headroom for the editor. Exposure preserves your samples.