Struct TileSelectionStats 

pub struct TileSelectionStats {

    pub raw_candidate_tiles: usize,
    pub visible_tiles: usize,
    pub exact_visible_tiles: usize,
    pub fallback_visible_tiles: usize,
    pub missing_visible_tiles: usize,
    pub overzoomed_visible_tiles: usize,
    pub dropped_by_budget: usize,
    pub budget_hit: bool,
    pub cancelled_stale_pending: usize,
    pub requested_tiles: usize,
    pub speculative_requested_tiles: usize,
    pub exact_cache_hits: usize,
    pub fallback_hits: usize,
    pub child_fallback_hits: usize,
    pub child_fallback_visible_tiles: usize,
    pub cache_misses: usize,
}

Per-frame diagnostics for the most recent tile-selection/update pass.

Fields

raw_candidate_tiles: usize

Number of candidate tiles before budget capping.

visible_tiles: usize

Number of visible tiles emitted for the frame.

exact_visible_tiles: usize

Number of visible tiles with exact imagery.

fallback_visible_tiles: usize

Number of visible tiles using fallback imagery.

missing_visible_tiles: usize

Number of visible tiles with no imagery available yet.

overzoomed_visible_tiles: usize

Number of visible tiles rendered as overzoomed (display zoom > source max zoom).

dropped_by_budget: usize

Number of candidate tiles dropped due to the visible tile budget.

budget_hit: bool

Whether the visible tile budget was hit this frame.

cancelled_stale_pending: usize

Number of stale pending requests cancelled this frame.

requested_tiles: usize

Number of new tile requests issued this frame.

speculative_requested_tiles: usize

Number of speculative prefetch tile requests issued this frame.

exact_cache_hits: usize

Number of cache hits on exact target tiles.

fallback_hits: usize

Number of visible tiles satisfied by ancestor fallback.

child_fallback_hits: usize

Number of desired tiles covered by cached child tiles (underzoom fallback).

child_fallback_visible_tiles: usize

Number of individual child-fallback visible tiles emitted.

cache_misses: usize

Number of desired tiles that missed both exact and ancestor imagery.

Trait Implementations

impl Clone for TileSelectionStats

fn clone(&self) -> TileSelectionStats

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TileSelectionStats

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

Formats the value using the given formatter.

impl Default for TileSelectionStats

fn default() -> TileSelectionStats

Returns the “default value” for a type.

impl PartialEq for TileSelectionStats

fn eq(&self, other: &TileSelectionStats) -> 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 Eq for TileSelectionStats

impl StructuralPartialEq for TileSelectionStats