Hackers Magazine 57/CdHackersMagazineNr57.iso/Software/Multimedia/k3d-setup-0.7.11.0.exe/share/k3d/shaders/glsl/gooch_fragment.glsl

Text File | 2008-01-23 | 659 b | 22 lines

varying float NdotL;
varying vec3 ReflectVec;
varying vec3 ViewVec;

void main()
{
    const vec3 SurfaceColor = vec3(0.75, 0.75, 0.75);
    const vec3 WarmColor = vec3(0.6, 0.6, 0.0);
    const vec3 CoolColor = vec3(0.0, 0.0, 0.6);
    const float DiffuseWarm = 0.45;
    const float DiffuseCool = 0.45;

    vec3 kcool = min(CoolColor + DiffuseCool * SurfaceColor, 1.0);
    vec3 kwarm = min(WarmColor + DiffuseWarm * SurfaceColor, 1.0);
    vec3 kfinal = mix(kcool, kwarm, NdotL);
    vec3 nreflect = normalize(ReflectVec);
    vec3 nview = normalize(ViewVec);
    float spec = max(dot(nreflect, nview), 0.0);
    spec = pow(spec, 32.0);
    gl_FragColor = vec4(min(kfinal + spec, 1.0), 1.0);
}