#version 450 core
layout (std140, binding = 1) uniform LightsBlock
{
    vec4 posBool[20];
    vec4 colRad[20];
} ;
//uniform int lightID;
vec3 lightPos = posBool[gl_Layer].xyz;
vec4 lumRad = colRad[gl_Layer];
uniform sampler2D screenTexture;
in vec2 gTexPos;
out vec4 fColor;
void main()
{
    vec3 distVec = texture(screenTexture,gTexPos).xyz - lightPos;
    float dist = dot(distVec,distVec);
    if (dist > lumRad.a) {discard;}
    float x = 1 - dist / lumRad.a ;
    vec3 c = (x * x * x) * lumRad.rgb ;
    fColor = vec4(c,0);
    //fColor = vec4(0.05,0,0,0);
}