Enum Tier 

pub enum Tier {
    Floor,
    Rich,
}

Which quality tier a renderer is running (ADR-0045).

Two named levels rather than a continuum: the output of a preset has to be predictable enough to baseline, document, and reproduce in a bug report, which a load-history-dependent feature-shedding scheme cannot deliver (ADR-0045 Alternative B).

Variants

Floor

The NFR §1/§2 iGPU floor — the pre-tier engine’s exact constants. The default here because it is the safe answer: a Tier value that appeared from nowhere should not raise anyone’s budgets.

Rich

Calibrated for a midrange discrete GPU: higher particle, segment and resolution budgets, same visual grammar.

Implementations

impl Tier

pub fn as_str(self) -> &'static str

The lowercase name the CLI, the env var and the config file all use.

pub fn label(self) -> &'static str

The uppercase name the 5x7 diagnostics overlay paints. Separate from as_str only because that font has no lowercase glyphs; both come off the same match so there is no second spelling to drift.

pub fn from_name(name: &str) -> Option<Self>

Parse a tier name, case-insensitively. None for anything else — callers surface that as a usage error rather than guessing a tier.

Trait Implementations

impl Clone for Tier

fn clone(&self) -> Tier

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Tier

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for Tier

fn default() -> Tier

Returns the “default value” for a type.

impl Hash for Tier

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for Tier

fn eq(&self, other: &Tier) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for Tier

impl Eq for Tier

impl StructuralPartialEq for Tier