Enum image_canvas::layout::Block

#[non_exhaustive]
#[repr(u8)]
pub enum Block {
    Pixel,
    Sub1x2,
    Sub1x4,
    Sub2x2,
    Sub2x4,
    Sub4x4,
    Pack1x2,
    Pack1x4,
    Pack1x8,
    Yuv422,
    Yuy2,
    Yuv411,
}

How many pixels are described by a single texel unit.

Also each pixel in a block to order of channels, i.e. provides the link between SampleParts and SampleBits. Note that some block layouts may have less channel than the sample if channels are not encoded separately, for example block compressed layouts.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Pixel

Each texel is a single pixel.

Sub1x2

Each texel refers to two pixels across width.

Sub1x4

Each texel refers to four pixels across width.

Sub2x2

Each texel refers to a two-by-two block.

Sub2x4

Each texel refers to a two-by-four block.

Sub4x4

Each texel refers to a four-by-four block.

Pack1x2

Each texel contains channels for two pixels, consecutively.

Pack1x4

Each texel contains channels for four pixels, consecutively.

Pack1x8

Each texel contains channels for eight pixels, consecutively.

Yuv422

Yuy2

Yuv422 with different order of channels.

Yuv411

Implementations

impl Block

pub fn width(&self) -> u32

pub fn height(&self) -> u32

Trait Implementations

impl Clone for Block

fn clone(&self) -> Block

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Block

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

Formats the value using the given formatter.

impl PartialEq<Block> for Block

fn eq(&self, other: &Block) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl Copy for Block

impl Eq for Block

impl StructuralEq for Block

impl StructuralPartialEq for Block