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Re: Implementing child frames on terminal

From: Po Lu
Subject: Re: Implementing child frames on terminal
Date: Tue, 12 Jul 2022 21:38:23 +0800
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.91 (gnu/linux)

Eli Zaretskii <eliz@gnu.org> writes:

> That'd be a step in the wrong direction, I think.  The whole idea of
> TTY display is that glyphs written to the glyph rows of a window's
> matrix "miraculously" end up in the frame's glyph matrix.  This avoids
> a costly copying of glyphs by allocating the glyphs of windows from
> the glyphs of the frame glyph matrix, and allows the last stage of
> redisplay to optimize the writes of the entire frame, as opposed to
> doing that window by window, which will surely be less optimal.
> I see no reason yet to abandon this trick.

I think you're right.  I don't understand the frame-based redisplay very
well, thanks.

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