Crate felis_render_core 

felis-render-core

The renderer-neutral core of felis, a daemon-backed terminal emulator for persistent sessions and headless control: palette, cell appearance, box drawing, the glyph index, the shelf atlas and the cell painter with its display list.

Modules

appearance

How a cell looks: its colors after reverse video, the cursor, the bidi warning, selection and faint, and which decorations it carries. Resolved per row of cells, so a client holding only decoded scrollback rows resolves them the same way the cell painter does.

atlas

First-fit shelf packer for the glyph atlas. Shelves are never defragmented: when the atlas fills, the caller resets and rebuilds.

box_drawing

Programmatic rasterization of box-drawing, block, Braille, mosaic, and Powerline glyphs.

display_list

What the cell painter emits: rectangles, glyph draws and line decorations in physical pixels, colors in linear RGBA. A backend draws rects, then glyphs, then decos, each in list order.

glyphs

Glyph index that bridges felis_shaping with a backend’s glyph atlas: GlyphIndex shapes, rasterizes and packs glyphs, and the backend drains its PendingUploads into wherever its atlas lives (felis-render-wgpu’s GlyphCache writes them into a texture).

overlay

Frame overlays the client composes over the grid: IME pre-edit, scrollback search, and the bottom-row bars.

painter

The cell painter: turns the screen and the frame’s overlays into the display list of crate::display_list.

palette

SGR color to linear-RGBA conversion. The renderer wants linear sRGB so the surface format (Bgra8UnormSrgb) does the gamma encoding.

Structs

ImageData

pixels.len() equals width * height * bytes_per_pixel(format); the daemon dispatcher enforces it.

SelectionRange

start / end are normalized by the client: row-major min/max for a linear selection, axis-aligned bounding box for a rectangle.

Traits

ImageSource

Supplies image pixels for GPU atlas re-uploads when the atlas recycles itself.