Struct TestImage 

pub struct TestImage { /* private fields */ }

A deterministic test image with contiguous (tightly-packed) rows.

Implementations

impl TestImage

pub fn rgba8_gradient(width: u32, height: u32) -> Self

An RGBA8 image whose channels vary with position, so any row/column transposition shows up as a pixel diff.

pub fn rgb8_gradient(width: u32, height: u32) -> Self

An RGB8 image with the same gradient pattern.

pub fn rgba8_gradient_seeded(width: u32, height: u32, seed: u8) -> Self

An RGBA8 gradient offset by seed, so distinct same-size frames (for animation tests) differ in content and a frame-ordering bug is visible.

pub fn rgb8_gradient_seeded(width: u32, height: u32, seed: u8) -> Self

An opaque RGB8 gradient offset by seed: distinct frames for codecs whose animations carry no partial transparency (GIF).

pub fn as_slice(&self) -> PixelSlice<'_>

Borrow the whole image as a [PixelSlice].