Struct TileDescriptor 

#[repr(C)]
pub struct TileDescriptor {
    pub seg_mask: u32,
    pub first_row: u32,
}

Tile descriptor: bit-packed row boundary information for one tile.

The descriptor encodes:

• y_offset: the starting row offset (local within the tile’s first row)
• seg_offset: bitmask indicating which lanes in the warp start a new row
• empty_offset: number of empty (padding) elements at the end of the tile

This allows each warp to determine which rows its non-zero elements belong to and how to reduce partial sums correctly.

Fields

seg_mask: u32

Bitmask: bit i is set if lane i starts a new row segment.

first_row: u32

Index of the first row that this tile contributes to.

Trait Implementations

impl Clone for TileDescriptor

fn clone(&self) -> TileDescriptor

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for TileDescriptor

impl Debug for TileDescriptor

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

Formats the value using the given formatter.

impl Default for TileDescriptor

fn default() -> TileDescriptor

Returns the “default value” for a type.

impl Eq for TileDescriptor

impl PartialEq for TileDescriptor

fn eq(&self, other: &TileDescriptor) -> 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 Send for TileDescriptor

impl StructuralPartialEq for TileDescriptor

impl Sync for TileDescriptor