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Fix two annoying display glitches with "fast scrolling" and

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WSDISPLAY_SCROLLSUPPORT.
This commit is contained in:
mycroft 2004-08-13 04:03:38 +00:00
parent ab20886f7b
commit c369e5b81c
1 changed files with 3 additions and 9 deletions
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12
sys/dev/ic/vga.c
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@ -1,4 +1,4 @@
/* $NetBSD: vga.c,v 1.79 2004/08/08 19:21:27 christos Exp $ */
/* $NetBSD: vga.c,v 1.80 2004/08/13 04:03:38 mycroft Exp $ */
/*
* Copyright (c) 1995, 1996 Carnegie-Mellon University.
@ -35,7 +35,7 @@
#include "opt_wsmsgattrs.h"
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: vga.c,v 1.79 2004/08/08 19:21:27 christos Exp $");
__KERNEL_RCSID(0, "$NetBSD: vga.c,v 1.80 2004/08/13 04:03:38 mycroft Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -1005,7 +1005,7 @@ vga_doswitch(struct vga_config *vc)
vga_setfont(vc, scr);
/* XXX swich colours! */
scr->pcs.dispoffset = scr->mindispoffset;
scr->pcs.visibleoffset = scr->pcs.dispoffset = scr->mindispoffset;
if (!oldscr || (scr->pcs.dispoffset != oldscr->pcs.dispoffset)) {
vga_6845_write(vh, startadrh, scr->pcs.dispoffset >> 9);
vga_6845_write(vh, startadrl, scr->pcs.dispoffset >> 1);
@ -1396,12 +1396,6 @@ vga_scroll(void *v, void *cookie, int lines)
void
vga_putchar(void *c, int row, int col, u_int uc, long attr)
{
#ifdef WSDISPLAY_SCROLLSUPPORT
struct vgascreen *scr = c;
if (scr->pcs.visibleoffset != scr->pcs.dispoffset)
vga_scroll(scr->cfg, scr, WSDISPLAY_SCROLL_BACKWARD);
#endif
pcdisplay_putchar(c, row, col, uc, attr);
}