To create a shader program that uses the ADS shading model with a spotlight, use the following code for the fragment shader:
in vec3 Position;
in vec3 Normal;
uniform struct SpotLightInfo { vec3 Position; // Position in cam coords vec3 L; // Diffuse/spec intensity vec3 La; // Amb intensity vec3 Direction; // Direction of the spotlight in cam coords. float Exponent; // Angular attenuation exponent float Cutoff; // Cutoff angle (between 0 and pi/2)} Spot;// Material uniforms...
layout( location = 0 ) out vec4 FragColor;
vec3 blinnPhongSpot( vec3 position, vec3 n ) { vec3 ambient = Spot.La * Material.Ka, diffuse = vec3(0), spec = vec3(0); vec3 s = normalize( Spot.Position - position ); float cosAng = dot(-s, normalize(Spot.Direction)); ...
