#import bevy_sprite::mesh2d_vertex_output::VertexOutput

@group(2) @binding(0) var<uniform> u_time: f32;
@group(2) @binding(1) var<uniform> u_resolution: vec2<f32>;

@fragment
fn fragment(mesh: VertexOutput) -> @location(0) vec4<f32> {
    var uv = mesh.uv * 2 - 1;
    uv.x = uv.x * (u_resolution.x / u_resolution.y);

    let red = vec3<f32>(1, 0, 0);
    let blue = vec3<f32>(0, 0, 1.0);

    let t = step(0.5, length(uv));

    let color = mix(red, blue, t);
    return vec4<f32>(color, 1);
}