#[enum_flags(u32)]
pub enum UsageFlags {
    BACK_BUFFER = 1 << (2 + 4),
    DISCARD_ON_PRESENT = 1 << (5 + 4),
    READ_ONLY = 1 << (4 + 4),
    RENDER_TARGET_OUTPUT = 1 << (1 + 4),
    SHADER_INPUT = 1 << (0 + 4),
    SHARED = 1 << (3 + 4),
    UNORDERED_ACCESS = 1 << (6 + 4),
}
