Can RectAreaLight cast shadows natively in Three.js?

No, RectAreaLight does not support native shadows. For rectangular area shadows, you would typically use baked lightmaps or custom contact shadow implementations.

Which Three.js light type is most performant for web scenes?

AmbientLight and HemisphereLight are the most performant because they require no complex directional calculations or shadow map rendering. Use them for general scene brightness.

What is the best way to get realistic reflections in Three.js?

The most realistic results come from Image-Based Lighting (IBL). Use the RGBELoader to load an HDR environment map and assign it to scene.environment.

How do I fix shadow flickering or 'shadow acne' in Three.js?

Shadow acne is typically fixed by fine-tuning the light.shadow.bias and light.shadow.normalBias properties to push the shadow depth slightly away from the surface.

Three.js Lighting & Shadow Specialist

Name: Three.js Lighting & Shadow Specialist
Author: lingxling

bylingxling

•

ゲーム開発

Configures and optimizes Three.js lighting systems including shadows, IBL, and performance-tuned light configurations.

This skill empowers developers to master the complexities of 3D illumination within Three.js environments. It provides specialized patterns for implementing various light types—from basic Ambient and Directional lights to advanced RectAreaLight and Image-Based Lighting (IBL). Beyond simple placement, it offers deep expertise in shadow map optimization, fixing common artifacts like shadow acne, and setting up realistic environment maps for PBR materials. It is an essential companion for building high-fidelity, performant 3D web experiences where visual mood and rendering efficiency are paramount.

主な機能

01Implementation of all 6 standard Three.js light types and their specific properties

02Image-Based Lighting (IBL) setup using HDR and Equirectangular reflection mapping

0352 GitHub stars

04Advanced shadow map configuration for PCFSoft and VSM shadow types

05Performance optimization strategies including light layers and frustum culling

06Visual debugging techniques using DirectionalLight, SpotLight, and PointLight helpers

ユースケース

01Creating realistic studio lighting for 3D product configurators and e-commerce

02Optimizing shadow performance for complex 3D scenes on mobile web browsers

03Implementing dynamic day-night cycles with sun positioning and sky gradients

主な機能

01Implementation of all 6 standard Three.js light types and their specific properties

02Image-Based Lighting (IBL) setup using HDR and Equirectangular reflection mapping

0352 GitHub stars

04Advanced shadow map configuration for PCFSoft and VSM shadow types

05Performance optimization strategies including light layers and frustum culling

06Visual debugging techniques using DirectionalLight, SpotLight, and PointLight helpers

ユースケース

01Creating realistic studio lighting for 3D product configurators and e-commerce

02Optimizing shadow performance for complex 3D scenes on mobile web browsers

03Implementing dynamic day-night cycles with sun positioning and sky gradients