// It's unclear to me where the generator gets this define (maybe it's directly from the original
// cpp header?), so we generate it manually.
pub fn col32(r: u32, g: u32, b: u32, a: u32) u32 {
    return a << IM_COL32_A_SHIFT |
        b << IM_COL32_B_SHIFT |
        g << IM_COL32_G_SHIFT |
        r << IM_COL32_R_SHIFT;
}