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From: Cecilio Pardo <cpardo@imayhem.com>
To: emacs-devel@gnu.org
Subject: Problems implementing double buffered painting for Windows
Date: Mon, 11 May 2020 12:13:50 +0200	[thread overview]
Message-ID: <86wo5ig4o1.fsf@inmotica-integral.es> (raw)


Hello,

I'm trying to implement double buffered painting for Windows, to
eliminate flicker. I am encountering some problems:

- When to flip buffers? I have tried to attach the flip to
  frame_up_to_date_hook on the 'terminal' struct, but it sometimes get
  called when it should not, producing flicker.

- What portion of the screen has been updated? I have seen no clear way
  to find this out. I'm resorting to intercept calls to w32_fill_rect to
  mark areas as invalidated, as it /seems/ to be always used to clean
  the area before painting, but this is clearly not a solution.

Any ideas welcome. Thank you.

-- 
Cecilio Pardo



             reply	other threads:[~2020-05-11 10:13 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-11 10:13 Cecilio Pardo [this message]
2020-05-11 16:49 ` Problems implementing double buffered painting for Windows Eli Zaretskii
2020-05-12  1:40   ` chad

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