#version 460 core

out layout(location=0) vec4 color;
in vec4 gl_FragCoord;
in vec4 vColor;
in vec3 vNormal;

void main() {
    vec3 lightDirection = normalize(vec3(0.8, -0.5, 0.6));
    float lambert = max(0.0, dot(normalize(vNormal), -lightDirection));
    vec3 litColor = vColor.rgb * lambert;
    color = vec4(litColor, vColor.a);
}