Struct PatternImage 

pub struct PatternImage(/* private fields */);

Shared image sampling contract captured by a paint, independent of content decoders.

Implementations

impl PatternImage

pub fn width(&self) -> u32

Base mip width in pixels.

pub fn height(&self) -> u32

Base mip height in pixels.

pub fn levels(&self) -> usize

Number of retained mip levels, including the base image.

pub fn size(&self, level: usize) -> (u32, u32)

Width and height of a valid retained mip level.

pub fn texel(&self, level: usize, column: usize, row: usize) -> [f32; 4]

Reads a linear-premultiplied texel; level and pixel indices must be valid.

pub fn extend_level(&self, level: usize, out: &mut Vec<f32>)

Appends a whole level in row-major order, four f32 per texel.

pub fn identity(&self) -> usize

Stable identity of the shared pixel storage, for deduplicating per-frame accounting.

pub fn downgrade(&self) -> WeakPatternImage

Non-owning handle that recognizes this exact shared pixel storage without keeping it alive.

The handle keeps the allocation reserved, so its address cannot be reused by another image while the handle exists.

Trait Implementations

impl Clone for PatternImage

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PatternImage

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

Formats the value using the given formatter.