Struct Framebuffer 

pub struct Framebuffer { /* private fields */ }

A CPU-side pixel buffer storing 0xAARRGGBB values row-major.

Implementations

impl Framebuffer

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

Allocate a transparent (all-zero) framebuffer of the given size.

pub fn with_fill(width: u32, height: u32, color: Color) -> Self

Allocate a framebuffer pre-filled with color.

pub fn width(&self) -> u32

Width in pixels.

pub fn height(&self) -> u32

Height in pixels.

pub fn pixels(&self) -> &[u32]

Borrow the raw pixel slice (0xAARRGGBB, row-major).

pub fn pixels_mut(&mut self) -> &mut [u32]

Mutably borrow the raw pixel slice.

pub fn clear(&mut self, color: Color)

Fill the entire buffer with color, discarding existing content.

pub fn get(&self, x: u32, y: u32) -> Option<u32>

Get the packed pixel at (x, y), or None if out of bounds.

pub fn get_rgba(&self, x: u32, y: u32) -> Option<(u8, u8, u8, u8)>

Get the (r, g, b, a) components at (x, y), or None if out of bounds.

pub fn set(&mut self, x: u32, y: u32, px: u32)

Set the packed pixel at (x, y) (overwrites; no blending). Out-of-bounds writes are ignored.

pub fn row(&self, y: u32) -> Option<&[u32]>

Borrow row y as a slice, or None if out of bounds.

pub fn blend(&mut self, x: u32, y: u32, src: u32)

Composite src over the existing pixel at (x, y) using straight-alpha source-over blending. Out-of-bounds writes are ignored.

pub fn blend_coverage(&mut self, x: u32, y: u32, c: &Color, coverage: f32)

Blend a colour c with an extra coverage factor coverage in [0, 1] (used for anti-aliased edges). The colour’s own alpha is multiplied by coverage before compositing.

pub fn to_rgba_buffer(&self) -> RgbaBuffer

Convert to an RgbaBuffer (R, G, B, A bytes) suitable for PNG export.

Trait Implementations

impl Clone for Framebuffer

fn clone(&self) -> Framebuffer

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Framebuffer

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

Formats the value using the given formatter.