#version 410

uniform sampler2D texture1;
in vec2 uvV;

out vec4 fragColor;

float fr(float x)
{
    return x - floor(x);
}
void main (void)
{
    vec4 c = texture(texture1, uvV);
//    c.g = fr(c.r * 1000.0);
//    c.b = fr(c.r * 1000000.0);
    
    float z = fr(c.r * 1500.0);
    z = (z < 0.5) ? 0.2 : 0.8;
    if(c.r < 0.999)
        c.rgb = vec3(z,z,z);
    
    fragColor = c;
}