Struct SimpleFrameBuffer

pub struct SimpleFrameBuffer { /* private fields */ }

Implementations

impl SimpleFrameBuffer

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

Trait Implementations

impl FrameBuffer for SimpleFrameBuffer

fn get_width(&self) -> usize

Width in pixels

fn get_height(&self) -> usize

Height in pixels

unsafe fn get_unchecked(&self, x: usize, y: usize) -> u32

Safety

fn set(&self, x: usize, y: usize, rgba: u32)

fn set_multi_from_start_index( &self, starting_index: usize, pixels: &[u8], ) -> usize

Returns the number of pixels copied

fn as_bytes(&self) -> &[u8]

As the pixel memory doesn’t necessarily need to be aligned (think of using shared memory for that), we can only return it as a list of bytes, not a list of pixels.

fn get_size(&self) -> usize

Returns the number of pixels (not bytes)

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

In case the coordinates are within the framebuffers area, Some with the current color is returned, None otherwise.

fn set_multi( &self, start_x: usize, start_y: usize, pixels: &[u8], ) -> (usize, usize)

We can not take an &[u32] for the pixel here, as std::slice::from_raw_parts requires the data to be aligned. As the data already is stored in a buffer we can not guarantee it’s correctly aligned, so let’s just treat the pixels as raw bytes.