[SFML GLSL] Shader Wody

void main()
{
    vec4 texcolor = texture2D( texture, gl_TexCoord[ 0 ].xy );
    if( texcolor.x == 127. / 255. && texcolor.y == 127. / 255. && texcolor.z == 127. / 255. && texcolor.w == 1.0 ) {
        vec2 coords =( worldPos.xy - camPosition ) / resolution;
        float pixelationFactor = 0.00390625;
        vec2 pixelCoord = floor( coords / pixelationFactor ) * pixelationFactor;
        float n = nestedNoise( pixelCoord * 25.60 );
        vec3 color = mix( vec3( .4, .6, 1. ), vec3( .05, .1, 1. ), n );
        vec3 darkcolor = color * 0.7;
        gl_FragColor = vec4( darkcolor, 1. );
    } else {
        gl_FragColor = texcolor;
    }
}