   width: () => {
                return canvas.width;
            },
            height: () => {
                return canvas.height;
            }
        };
        var pickingFBO = regl.framebuffer(canvas.width, canvas.height);
        var picking = new reshader.FBORayPicking(
            renderer,
            {
                vert : pickingVert,
                uniforms : [
                    {
                        name : 'projViewModelMatrix',
                        type : 'function',
         