You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: snowflakewgpu.rs
    path of file: ./repos/rusty_art/src
    
    the code of the file until where you have to start completion: use nannou::prelude::*;
struct Model {
    bind_group: wgpu::BindGroup,
    render_pipeline: wgpu::RenderPipeline,
    vertex_buffer: wgpu::Buffer,
    time_uniform: wgpu:
    
fn view(app: &App, model: &Model, frame: Frame) {
    let mut encoder = frame.command_encoder();
    let time = app.time as f32;
    let time_bytes = time.to_ne_bytes(); 
    let binding = app.main_window();
    let queue = binding.queue();
    queue.write_buffer(&model.time_uniform, 0, &time_bytes);
    let mut render_pass = wgpu::RenderPassBuilder::new()
        .color_attachment(frame.texture_view(), |color| color)
        .begin(&mut encoder);
    render_pass.set_bind_group(0, &model.bind_group, &[]);
    render_pass.set_bind_group(1, &model.time_bind_group, &[]);
    render_pass.set_pipeline(&model.render_pipeline);
    render_pass.set_vertex_buffer(0, model.vertex_buffer.slice(..));
    let vertex_range = 0..VERTICES.len() as u32;
    let instance_range = 0..1;
    render_pass.draw(vertex_range, instance_range);
    if app.keys.down.contains(&Key::Space) {
        let file_path = app
            .project_path()
            .expect("failed to locate project directory")
            .join("frames")
            .join(format!("{:0}.png", app.elapsed_frames()));
        app.main_window().capture_frame(file_path);
    } 
}