Author: dumbbell
Date: Tue Aug 26 17:48:05 2014
New Revision: 270667
URL: http://svnweb.freebsd.org/changeset/base/270667
Log:
vt(4): When creating a window buffer, fill it entirely
... not just the visible part.
This fixes a bug where, when switching from eg. vt_vga to vt_fb (ie. the
resolution goes up), the originally hidden, uninitialized area of the
buffer is displayed on the screen. This leads to a missing text cursor
when it's over an unitialized area.
This was also visible when selecting text: the uninitialized area was
not highlighted.
Internally, this area was zeroed: characters were all 0x00000000,
meaning the foreground and background color was black. Now, everything
is filled with a space with a gray foreground color, like the visible
area.
While here, remove the check for the mute flag and always use
TERMINAL_NORM_ATTR as the character attribute (ie. gray foreground,
black background).
MFC after: 1 week
Modified:
head/sys/dev/vt/vt_buf.c
Modified: head/sys/dev/vt/vt_buf.c
==============================================================================
--- head/sys/dev/vt/vt_buf.c Tue Aug 26 16:40:20 2014 (r270666)
+++ head/sys/dev/vt/vt_buf.c Tue Aug 26 17:48:05 2014 (r270667)
@@ -410,9 +410,9 @@ vtbuf_init_early(struct vt_buf *vb)
vtbuf_init_rows(vb);
rect.tr_begin.tp_row = rect.tr_begin.tp_col = 0;
- rect.tr_end = vb->vb_scr_size;
- vtbuf_fill(vb, &rect, VTBUF_SPACE_CHAR((boothowto & RB_MUTE) == 0 ?
- TERMINAL_KERN_ATTR : TERMINAL_NORM_ATTR));
+ rect.tr_end.tp_col = vb->vb_scr_size.tp_col;
+ rect.tr_end.tp_row = vb->vb_history_size;
+ vtbuf_fill(vb, &rect, VTBUF_SPACE_CHAR(TERMINAL_NORM_ATTR));
vtbuf_make_undirty(vb);
if ((vb->vb_flags & VBF_MTX_INIT) == 0) {
mtx_init(&vb->vb_lock, "vtbuf", NULL, MTX_SPIN);
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