glium 0.3.3

High-level and safe OpenGL wrapper.
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extern crate glutin;
#[macro_use]
extern crate glium;

use std::default::Default;
use glium::Surface;

mod support;

#[test]
fn magnify_nearest_filtering() {
    // ignoring test on travis
    // TODO: find out why they are failing
    if ::std::env::var("TRAVIS").is_ok() {
        return;
    }
    
    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 sampler2D texture;

            void main() {
                gl_FragColor = texture2D(texture, vec2(0.51, 0.0));
            }
        ",
        None).unwrap();

    let texture_data = vec![vec![(0u8, 0, 0), (255, 255, 255)]];
    let texture = glium::texture::Texture2d::new(&display, texture_data);

    let uniforms = uniform! {
        texture: glium::uniforms::Sampler::new(&texture)
                        .magnify_filter(glium::uniforms::MagnifySamplerFilter::Nearest)
    };

    let output = support::build_renderable_texture(&display);
    output.as_surface().clear_color(0.0, 0.0, 0.0, 0.0);

    match output.as_surface().draw(&vb, &ib, &program, &uniforms, &Default::default()) {
        Ok(_) => (),
        Err(glium::DrawError::SamplersNotSupported) => return,
        Err(e) => panic!("{:?}", e)
    };

    let data: Vec<Vec<(u8, u8, u8)>> = output.read();
    assert_eq!(data[0][0], (255, 255, 255));

    display.assert_no_error();
}