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Disable DMABUF and Compositing for xwidget

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Webkit does not support DMABUF or accelerated compositing in the
offscreen widgets Emacs uses for xwidget.  Disable both for non-pgtk
GTK3 builds (Bug#80834).
* src/xterm.c (init_xterm): Set WEBKIT_DISABLE_DMABUF_RENDERER and
WEBKIT_DISABLE_COMPOSITING_MODE when built with xwidgets and not pgtk.

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This commit is contained in:
Dirk-Jan C. Binnema 2026-06-13 09:47:01 +03:00 committed by Eli Zaretskii
parent 2c5b4911b3
commit def15c1b97
1 changed files with 7 additions and 0 deletions
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src/xterm.c
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@ -32364,6 +32364,13 @@ static struct textconv_interface text_conversion_interface =
void
init_xterm (void)
{
#if defined(HAVE_XWIDGETS) && !defined(HAVE_PGTK)
/* Emacs uses off-screen gtk widgets for webkit views, which do not support
DMABUF or Compositing Mode; webkit aborts unless we disable those. */
xputenv ("WEBKIT_DISABLE_DMABUF_RENDERER=1");
xputenv ("WEBKIT_DISABLE_COMPOSITING_MODE=1");
#endif
#ifndef HAVE_XINPUT2
/* Emacs can handle only core input events when built without XI2
support, so make sure Gtk doesn't use Xinput or Xinput2