Visual Shader Lambert Light Model Node - Godot 4.4+

This is an addon for Godot 4.4+ that adds the Lambert node to the visual shader system. This node outputs the Diffuse Light based on the Lambertian Reflectance Model.

Mathematical Formula:

diffuse = (ρ/π) * cos(theta_i)

Where:

• ρ is the albedo of surface.

Godot Shader Language:

const float INV_PI = 0.31830988618379067154; // 1.0 / PI.

float diffuse_lambert(
    in vec3 n,
    in vec3 l
)
{
    float NdotL = dot(n, l); // cos(theta_l) == cos(theta_i).
    
    if(NdotL < 0.0)
    {
        return 0.0;
    }
    
    return INV_PI * NdotL;
}

Links & Support

• Godot Asset Lib

• Git-Hub

[ Support Email: interdreamsoft@gmail.com ]