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: uniforms.rs
    path of file: ./repos/glium/tests
    
    the code of the file until where you have to start completion: #[macro_use]
extern crate glium;

use glium::Surface;

mod support;

const RED_HALF_ALPHA: (u8, u8, u8, u8) = if cfg!(windows) {
    (255, 0, 0, 127)
} else {
    (255, 0, 0, 128)
};

#[derive(Copy, Clone)]
struct Vertex {
    position: [f32; 2],
}

implement_vertex!(Vertex, position);

#[test]
fn uniforms_storage_single_value() {
    let display = support::build_display();
    let (vb, ib) = support::build_rectangle_vb_ib(&display);

    let program = glium::Program::from_source(&display,
        "
            #version 110

       
    
fn uniforms_dynamic_single_value() {
    let display = support::build_display();
    let (vb, ib) = support::build_rectangle_vb_ib(&display);

    let program = glium::Program::from_source(&display,
        "
            #version 110

            attribute vec2 position;

            void main() {
                gl_Position = vec4(position, 0.0, 1.0);
            }
        ",
        "
            #version 110

            uniform vec4 color;

            void main() {
                gl_FragColor = color;
            }
        ",
        None).unwrap();

    let mut uniforms = glium::uniforms::DynamicUniforms::new();
    uniforms.add("color", &[1.0, 0.0, 0.0, 0.5f32]);

    let texture = support::build_renderable_texture(&display);
    texture.as_surface().clear_color(0.0, 0.0, 0.0, 0.0);
    texture.as_surface().draw(&vb, &ib, &program, &uniforms, &Default::default()).unwrap();

    let data: Vec<Vec<(u8, u8, u8, u8)>> = texture.read();
    assert_eq!(data[0][0], RED_HALF_ALPHA);
    assert_eq!(data.last().unwrap().last().unwrap(), &RED_HALF_ALPHA);

    display.assert_no_error(None);
}