import { Effect } from "babylonjs";

let name = 'shadowOnlyPixelShader';
let shader = `precision highp float;

uniform vec3 vEyePosition;
uniform float alpha;
uniform vec3 shadowColor;

varying vec3 vPositionW;
#ifdef NORMAL
varying vec3 vNormalW;
#endif

#include<helperFunctions>

#include<__decl__lightFragment>[0..maxSimultaneousLights]
#include<lightsFragmentFunctions>
#include<shadowsFragmentFunctions>
#include<clipPlaneFragmentDeclaration>

#include<fogFragmentDeclaration>
void main(void) {
#include<clipPlaneFragment>
vec3 viewDirectionW=normalize(vEyePosition-vPositionW);

#ifdef NORMAL
vec3 normalW=normalize(vNormalW);
#else
vec3 normalW=vec3(1.0,1.0,1.0);
#endif

vec3 diffuseBase=vec3(0.,0.,0.);
lightingInfo info;
float shadow=1.;
float glossiness=0.;
#include<lightFragment>[0..1]

vec4 color=vec4(shadowColor,(1.0-clamp(shadow,0.,1.))*alpha);
#include<fogFragment>
gl_FragColor=color;
}`;

Effect.ShadersStore[name] = shader;

export { shader, name };