function register(Shader) {
    // Some build in shaders
    Shader['import'](coloradjustEssl);
    Shader['import'](blurEssl);
    Shader['import'](lumEssl);
    Shader['import'](lutEssl);
    Shader['import'](vigentteEssl);
    Shader['import'](outputEssl);
    Shader['import'](brightEssl);
    Shader['import'](downsampleEssl);
    Shader['import'](upsampleEssl);
    Shader['import'](hdrEssl);
    Shader['import'](lensflareEssl);
    Shader['import'](blendEssl);

    Shader['import'](fxaaEssl);

}
Proxy of pass.material.undefine('fragment', xxx)
@param  {string} symbol