$

scene = {
    root: 'scene',
    simple: 'simple.shader',
    city: 'city.vbo',
    //city: 'cityscape.vbo',
    init: function(glee, params){
        var self = this;

        this.sky = params.sky;
        
        var samples = [];
        while(samples.length < 16){
            var x = (Math.random()-0.5)*2.0;
            var y = (Math.random()-0.5)*2.0;
            var z = (Math.random()-0.5)*2.0;
            var l = Math.sqrt(x*x+y*y+z*z);
            if(l < 1.0 && l > 0.1){
                samples.push(x, y, z);
            }
        }

        this.processor = new glee.Processor({
            clear: {
                depth: 1,
            },
            shader: this.simple,
            uniforms: {
                view: params.view.matrix,
                view_rot: params.view.rot,
                proj: params.proj.matrix,
                lightdir: new glee.Vec3(0.5, 1.0, 0.2).normalize(),
                near: params.proj.near,
                far: params.proj.far,
                shadow_near: params.shadow.proj.near,
                shadow_far: params.shadow.proj.far,
                shadow_view: shadow.view,
                shadow_proj: params.shadow.proj.matrix,
            },
            uniform3f: {
                samples: samples,
            },
            samplers: {
                diffuse: params.sky.diffuse.result,
                occlusionmap: params.occlusion,
                shadowmap: params.shadow.result,
            },
            draw: function(){
                self.city.draw();
            },
            depth: {
                test: 'Less',
                write: true,
            }
        });
    },
    set_occlusion: function(occlusion){
        this.processor.samplers.occlusionmap = occlusion;
    },
    render: function(){
        this.processor.render();
    }
}