Custom Ghostty Shaders

This repository contains GLSL shaders for Ghostty cursor effects.

Shaders

smooth_cursor_movement.glsl (WIP)

Creates a smooth cursor glide between iPreviousCursor and iCurrentCursor using cubic ease-out interpolation.

• Primary effect: smooth cursor motion with deceleration into the destination cell.
• Destination handling: masks the terminal's real destination cursor during animation to reduce early destination flashes, then reveals the final cursor when animation completes.
• Geometry: uses signed-distance rectangles for cursor placement and edge antialiasing.
• Key tunables: DURATION, EDGE_SOFT, HIDE_MATCH.

cursor_blaze.glsl

Draws a cursor trail "blaze" between old and new cursor positions using a signed-distance parallelogram.

• Primary effect: a motion trail that visually connects previous and current cursor positions.
• Trail behavior: fades based on movement progress and distance from the destination cursor.
• Trail gating: can suppress short moves and optionally hide same-line trails.
• Key tunables: DURATION, OPACITY, DRAW_THRESHOLD, HIDE_TRAILS_ON_THE_SAME_LINE, and the trail color constants.