Struct CpuImage 

pub struct CpuImage { /* private fields */ }

A CPU picture of premultiplied sRGB RGBA, like every GPU intermediate.

Only the content rectangle is stored; everything outside is transparent, so a small label on a large canvas stores only the label.

Implementations

impl CpuImage

pub fn from_premultiplied_rgba8( size: RenderSize, rgba8: &[u8], ) -> Result<Self, RenderError>

A picture from packed premultiplied sRGB RGBA8, sampled like the texture crate::Renderer::upload_rgba8 creates.

Errors

RenderError::InvalidImageData when rgba8 is not four bytes per pixel of size.

pub const fn size(&self) -> RenderSize

The picture’s dimensions.

pub fn retained_bytes(&self) -> u64

Bytes the picture holds.

pub fn read_rgba8(&self) -> Vec<u8>

Packed RGBA8 rounded to nearest, as crate::Renderer::read_rgba8 reads a texture.

Trait Implementations

impl Clone for CpuImage

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 CpuImage

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

Formats the value using the given formatter.