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Instead of redrawing the entire pane or scene when moving or redrawing a

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pane, add damage rectangles and redraw only the affected spans. From
Michael Grant.
This commit is contained in:
nicm
2026-10-02 12:48:52 +00:00
committed by tmux update bot
parent 950a7f6631
commit 0a1adfa116
12 changed files with 451 additions and 59 deletions
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28
screen-write.c
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@@ -1,4 +1,4 @@
/* $OpenBSD: screen-write.c,v 1.294 2026/09/28 10:10:16 nicm Exp $ */
/* $OpenBSD: screen-write.c,v 1.295 2026/10/02 12:48:52 nicm Exp $ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
@@ -122,14 +122,26 @@ screen_write_set_cursor(struct screen_write_ctx *ctx, int cx, int cy)
evtimer_add(&w->offset_timer, &tv);
}
/* Do a full redraw. */
/* Redraw lines. */
static void
screen_write_redraw_cb(const struct tty_ctx *ttyctx)
screen_write_redraw_cb(const struct tty_ctx *ttyctx, u_int py, u_int ny)
{
struct window_pane *wp = ttyctx->arg;
int x0, y0, x1, y1;
if (wp != NULL)
wp->flags |= PANE_REDRAW;
if (wp == NULL)
return;
x0 = wp->xoff;
y0 = wp->yoff + (int)py;
x1 = x0 + (int)wp->sx;
y1 = y0 + (int)ny;
if (x0 < 0)
x0 = 0;
if (y0 < 0)
y0 = 0;
if (x1 > x0 && y1 > y0)
redraw_damage_window(wp->window, x0, y0, x1 - x0, y1 - y0);
}
/* Update context for client. */
@@ -2185,7 +2197,7 @@ screen_write_fullredraw(struct screen_write_ctx *ctx)
screen_write_initctx(ctx, &ttyctx, 1, 0);
if (ttyctx.redraw_cb != NULL)
ttyctx.redraw_cb(&ttyctx);
ttyctx.redraw_cb(&ttyctx, 0, ttyctx.sy);
}
/* Trim collected items. */
@@ -3138,7 +3150,7 @@ screen_write_alternateon(struct screen_write_ctx *ctx, struct grid_cell *gc,
screen_write_initctx(ctx, &ttyctx, 1, 0);
if (ttyctx.redraw_cb != NULL)
ttyctx.redraw_cb(&ttyctx);
ttyctx.redraw_cb(&ttyctx, 0, ttyctx.sy);
}
/* Turn alternate screen off. */
@@ -3163,5 +3175,5 @@ screen_write_alternateoff(struct screen_write_ctx *ctx, struct grid_cell *gc,
screen_write_initctx(ctx, &ttyctx, 1, 0);
if (ttyctx.redraw_cb != NULL)
ttyctx.redraw_cb(&ttyctx);
ttyctx.redraw_cb(&ttyctx, 0, ttyctx.sy);
}