iJewel3D Docs

Appearance

Progressive Shadow ​

Progressive Shadow adds a soft, realistic shadow beneath your model using a directional light. Once enabled, you get full control over the shadow's color, direction, softness, and intensity — making your jewelry renders look more grounded and professional.

Where to Find It ​

This section is located on the right panel, inside the SceneScene tab, in the Progressive Shadow section.

Progressive Shadow section

Enabling Progressive Shadow ​

Check the Enable checkbox to activate the Progressive Shadow. A directional light will be created in the scene, and a shadow will appear beneath your model. Uncheck to disable.

Directional Light Settings ​

Once enabled, you can configure the directional light that casts the shadow:

Visibility & Intensity ​

Visible
Checkbox — show or hide the directional light helper in the viewport
Intensity
Slider — controls the strength of the directional light
Color
Color picker — choose the color of the shadow. Use darker colors for subtle shadows or try colored shadows for creative effects

Focus & Spread ​

Focus
Slider — controls how tight the shadow area is. Higher focus produces a more concentrated shadow beneath the model
Spread
Slider — controls the softness of the shadow edges. Higher spread produces a softer, more diffused shadow
Distance Scale
Slider — adjusts the distance of the light from the model

Direction & Advanced ​

Direction
Three inputs (X, Y, Z) — set the direction the light comes from. This changes where the shadow falls relative to the model
Radius
Slider — the radius of the shadow map area
First Stone Size
Slider — size of the first shadow cascade step
Bias
Slider — shadow bias to reduce shadow acne artifacts
Normal Bias
Slider — normal-based bias for further artifact reduction

Video Tutorial ​

How to Create Custom Shadows ​