Struct CellDynamic

#[repr(C, align(4))]
pub struct CellDynamic { /* private fields */ }

Dynamic instance data for terminal cell appearance.

CellDynamic contains the frequently-changing visual data for each terminal cell, including the character glyph and colors. This data is updated whenever cell content changes and is efficiently uploaded to the GPU using dynamic buffer updates.

Memory Layout

The 8-byte data array is packed as follows:

• Bytes 0-1: Glyph depth/layer index (u16, little-endian)
• Bytes 2-4: Foreground color RGB (3 bytes)
• Bytes 5-7: Background color RGB (3 bytes)

This compact layout minimizes GPU memory usage and allows efficient instanced rendering of the entire terminal grid.

Color Format

Colors are stored as RGB bytes (no alpha channel in the instance data). The alpha channel is handled separately in the shader based on glyph transparency from the texture atlas.

GPU Usage

Uploaded as instance attributes and accessed in both vertex and fragment shaders for character selection and color application.

Buffer Upload

Uploaded to GPU using GL::DYNAMIC_DRAW for efficient updates.

Implementations

impl CellDynamic

pub fn new(glyph_id: u16, fg: u32, bg: u32) -> Self

pub fn style(&mut self, style_bits: u16)

Overwrites the current cell style bits with the provided style bits.

pub fn flip_colors(&mut self)

Sets the foreground color of the cell.

pub fn fg_color(&mut self, fg: u32)

Sets the foreground color of the cell.

pub fn bg_color(&mut self, bg: u32)

Sets the background color of the cell.

pub fn get_fg_color(&self) -> u32

Returns foreground color as a packed RGB value.

pub fn get_bg_color(&self) -> u32

Returns background color as a packed RGB value.

pub fn get_style(&self) -> u16

Trait Implementations

impl Clone for CellDynamic

fn clone(&self) -> CellDynamic

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CellDynamic

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

Formats the value using the given formatter.

impl Copy for CellDynamic