struct Uniform {
    xf: mat4x4<f32>;
    color: vec4<f32>;
};
@group(0) @binding(0)
var<uniform> ubuf: Uniform;

@stage(vertex)
fn vs_main(@location(0) in_pos: vec3<f32>) -> @builtin(position) vec4<f32> {
    return ubuf.xf * vec4<f32>(in_pos, 1.0);
}

@stage(fragment)
fn fs_main() -> @location(0) vec4<f32> {
    return ubuf.color;
}