Struct CulledWindings 

pub struct CulledWindings {
    pub partial: Vec<[f32; 4]>,
    pub coarse: Vec<i16>,
    pub active: Vec<u32>,
    pub culled: bool,
    height: u16,
}

A logical grouping of arrays used for culled tile processing,

Fields

partial: Vec<[f32; 4]>

Fractional winding coverage for each individual scanline in a row.

coarse: Vec<i16>

Accumulated integer winding deltas for each tile row.

active: Vec<u32>

Bitmask tracking which rows contain active geometry or winding data.

culled: bool

Flag indicating if any geometry was early-culled outside the viewport.

height: u16

Implementations

impl CulledWindings

const WORD_BITS: usize = 32

Number of bits in a single active mask word.

const WORD_SHIFT: usize = 5

Bit shift equivalent to dividing by WORD_BITS (2^5 = 32).

const WORD_MASK: usize = 31

Bitmask equivalent to modulo WORD_BITS (32 - 1 = 31).

pub fn new(height: u16) -> Self

Constructor chained to Tiles’ constructor and matching its initial viewport height.

fn sizes(height: u16) -> (usize, usize)

pub fn reset(&mut self, height: u16)

Reset the winding buffers.

pub fn mark_row_active(&mut self, row_idx: usize)

Marks if a row was culled early for faster traversal in strip generation.

pub fn mark_row_range_active(&mut self, start_row: usize, end_row: usize)

Bulk marks a range of rows as active [start_row, end_row).

pub fn for_active_rows_in_range<F>(&self, start: usize, end: usize, f: F)

where F: FnMut(usize),

Calls f on active rows in the range [start, end).

Trait Implementations

impl Clone for CulledWindings

fn clone(&self) -> CulledWindings

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CulledWindings

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

Formats the value using the given formatter.

impl Default for CulledWindings

fn default() -> CulledWindings

Returns the “default value” for a type.