Struct ImageAsset 

pub struct ImageAsset { /* private fields */ }

static PNG/JPEG/WebP data with EXIF-corrected linear RGBA16F mipmaps. Clones share every level. Encoded profiles are interpreted as sRGB; ICC/HDR profile transforms and animated frame selection belong to later contracts.

Implementations

impl ImageAsset

pub fn from_bytes(bytes: &[u8]) -> Result<Self>

Decodes a bounded static PNG/JPEG/WebP and applies EXIF orientation first.

pub fn from_rgba8(width: u32, height: u32, pixels: Vec<u8>) -> Result<Self>

Converts straight encoded-sRGB RGBA8 without retaining or decoding it later.

pub fn from_rgba_float( width: u32, height: u32, pixels: Vec<[f64; 4]>, ) -> Result<Self>

Takes straight LINEAR f64 RGBA, then premultiplies and rounds to half. Extended RGB is allowed when premultiplied values fit RGBA16F; alpha must be in 0..=1. Zero or half-rounded-zero alpha clears hidden RGB.

pub fn width(&self) -> u32

Source width after orientation.

pub fn height(&self) -> u32

Source height after orientation.

pub fn levels(&self) -> &[ImageLevel]

Immutable mip chain, including the base and final 1x1 level.

pub fn retained_bytes(&self) -> usize

Logical shared pixel payload, excluding allocation overhead.

Trait Implementations

impl Asset for ImageAsset

const KIND: &'static str = "image"

Human-readable resource category retained by load diagnostics.

fn decode(bytes: &[u8], _: &LoadContext) -> Result<Self>

Decodes bounded input without requiring a rendering device. Implementations must be deterministic for these bytes/context; recursive resource dependency graphs are not a supported decoder contract.

fn retained_bytes(&self) -> usize

Logical decoded payload charge; custom heap-owning assets should override. At least the encoded input length is charged regardless of this value.

impl Clone for ImageAsset

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 ImageAsset

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

Formats the value using the given formatter.

impl ImagePixels for ImageAsset

fn width(&self) -> u32

Base-level width in texels.

fn height(&self) -> u32

Base-level height in texels.

fn level_count(&self) -> usize

Number of immutable mip levels.

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

Width/height of an existing mip level.

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

One in-bounds finite linear-premultiplied texel.

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

Appends every texel of an existing level in row-major order, four f32 each. Overriding this avoids one dynamic call per texel for backends that upload whole levels.

fn content_eq(&self, other: &dyn ImagePixels) -> bool

Whether another implementation owns the same immutable pixel content.

fn as_any(&self) -> &dyn Any

Concrete storage identity, resolved only by its owning content implementation.

impl PartialEq for ImageAsset

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ImageAsset