yetone 0cb5679842 fix(render): analytically antialiased rounded corners
The polyline arc band couldn't match kitty's corners on two counts,
both dictated by how gpui rasterizes paths:

* Separately painted segments composite as premultiplied sprites, so
  two abutting antialiased edges meet at 75% opacity — a lighter seam
  at every joint. All contours now ride in ONE Path (via move_to),
  where the 4x-MSAA samples partition cleanly across shared edges.
* Straight path edges only get 4-level MSAA antialiasing, while
  `curve_to` quadratics are antialiased analytically (Loop–Blinn
  signed distance) — a continuous ramp, the same quality kitty gets
  from supersampling. The outer arc edge is now a real quadratic per
  30° slice (control point at the tangents' intersection).

The inner edge stays a fine polyline: gpui accumulates coverage with
no winding cancellation, so a concave-side curve bulge can only
over-cover (the origin of the original quarter-disc blob). Its chord
error at 7.5° steps is under 0.1px and hides inside the MSAA. Each 30°
contour is star-shaped from its start vertex, which is what the fan
fill actually requires.
2026-07-27 18:15:58 +08:00
2026-07-27 14:00:22 +08:00
2026-07-27 14:00:22 +08:00
2026-07-27 14:00:22 +08:00

tty7

tty7

A terminal workbench: shells, sessions, SSH, coding agents.

Pure Rust · GPU rendering on Zed's gpui · VT core from Alacritty


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Why

  • Fast — ~2× the throughput of Alacritty, Ghostty, or Kitty (benchmarks)
  • Sessions persist — quit or reboot; your shells keep running, no tmux
  • Editor-grade input — completion, syntax highlighting, history search built in; zero config for zsh, bash, fish, PowerShell
  • Agent-aware — recognizes Claude Code & co. in a pane: status, notifications, session resume

Install

Native builds for each platform on Releases:

macOS …-macos-arm64.dmg · …-x86_64.dmg drag into Applications
Windows …-setup.exe · portable ….zip
Linux …-x86_64.AppImage chmod +x and run — x11/wayland libs bundled

What's inside

Input ghost suggestions from history · explained tab completion · syntax highlighting · multi-line editing · click places the caret · ⌃ R fuzzy history
Window tabs & splits · ⌘ P palette · ⌘ F scrollback search · eight themes · IME
Coding agents per-pane agent detection (~17 CLIs): status dot, notifications, branch + diff, resume after reboot, tray icon that signals "needs your input"
SSH native russh stack: profiles with keychain secrets, SFTP panel, port forwarding, jump hosts

Details for every row: docs/features.md. Keybindings: ⌘ , opens Settings — browse and remap everything, tmux preset included (full list).

Benchmarks

Same machine, same day, same 155×40 grid — Apple M1 Pro, macOS 26.3.1, five-run averages (2026-07-04):

tty7 Alacritty Ghostty Kitty
Plaintext IO — 11 MB cat (lower = better) 95 ms 239 ms 179 ms 185 ms
DOOM-fire frame rate (higher = better) 888 fps 485 fps 552 fps 617 fps
Cold-launch memory 116 MB¹ 105 MB 128 MB 130 MB

¹ GUI 105 MB + the persistent daemon 11 MB.

Methodology and one-command reproduction: scripts/bench/.


S
Description
A terminal workbench in pure Rust: shells, persistent sessions, SSH, coding agents. GPU-rendered on Zed's gpui, VT core from Alacritty.
Readme Apache-2.0
34 MiB
Languages
Rust 99.1%
Shell 0.5%
PowerShell 0.2%
Inno Setup 0.1%