Oren-Nayar Lighting Model Visualizer

Oren-Nayar Lighting Model Visualizer

Oren-Nayar Model | Roughness: 0.5

Controls

Surface Roughness (σ):

Smooth (0) 0.5 Rough (π/2)

Light Angle:

0° 45° 90°

View Angle:

0° 30° 90°

Surface Color:

Lighting Model: Oren-Nayar (Rough Surface) Lambertian (Smooth Surface)

About Oren-Nayar Model

The Oren-Nayar model describes how light reflects off rough surfaces, where microfacets cause light to scatter more diffusely than with smooth Lambertian surfaces.

Key parameters:

• Roughness (σ): Controls surface microfacets (0=smooth, π/2=rough)
• Light Angle: Direction of incoming light
• View Angle: Your viewing position
• Compare with Lambertian model to see the difference