Function render_layers_with_cache_sized 

pub fn render_layers_with_cache_sized<F>(
    fb: &mut impl FbSurface,
    layers: &[MapLayer],
    camera_x: i32,
    camera_y: i32,
    width: u32,
    height: u32,
    tile_size: u32,
    tile_color: F,
    cache: Option<&mut LayerTileCache>,
)
where
    F: Fn(u16, u8, u8, u8) -> Rgba,

Like render_layers_with_cache but with a caller-specified tile_size (pixels per tile side).

Note: LayerTileCache stores fixed 8×8 RgbaTiles, so caching is bypassed whenever tile_size != TILE_SIZE — the per-pixel tile_color path is used instead. (wuxia’s static maps render fine without the cache; the full-colour tile_color closure is a cheap array index.)