@:directlyUsed@:src({
@const var enableSpecular:Bool;
@param var color:Vec3;
@param var params:Vec3;
@param var lightPosition:Vec3;
@global var camera:{ var position : Vec3};
@const var isAmbient:Bool;
var lightColor:Vec3;
var lightPixelColor:Vec3;
var transformedPosition:Vec3;
var pixelTransformedPosition:Vec3;
var transformedNormal:Vec3;
var specPower:Float;
var specColor:Vec3;
function calcLighting(position:Vec3):Vec3 {
var dvec = lightPosition - position;
var dist2 = dvec.dot(dvec);
var dist = dist2.sqrt();
var diff:Float = isAmbient ? 1. : transformedNormal.dot(dvec).max(0.);
var factor = 1 / vec3(dist, dist2, dist * dist2).dot(params);
if (!enableSpecular) return color * diff * factor;
var r = reflect(-dvec.normalize(), transformedNormal).normalize();
var specValue = r.dot((camera.position - position).normalize()).max(0.);
return color * (diff * factor + specColor * pow(specValue, specPower));
};
function vertex() {
lightColor.rgb += calcLighting(transformedPosition);
};
function fragment() {
lightPixelColor.rgb += calcLighting(pixelTransformedPosition);
};
})@:build(hxsl.Macros.buildShader())@:autoBuild(hxsl.Macros.buildShader())
