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2009-02-01 Vesa Jääskeläinen <chaac@nic.fi>

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Base on patch on bug #24154 created by Tomas Tintera
	<trosos@seznam.cz>.

	* video/i386/pc/vbe.c (grub_video_vbe_scroll): Fix downward scrolling.
This commit is contained in:
chaac 2009-02-01 09:33:29 +00:00
parent a69ef770ff
commit 825a182b6a
2 changed files with 28 additions and 9 deletions
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7
ChangeLog
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@ -1,3 +1,10 @@
2009-02-01 Vesa Jääskeläinen <chaac@nic.fi>
Base on patch on bug #24154 created by Tomas Tintera
<trosos@seznam.cz>.
* video/i386/pc/vbe.c (grub_video_vbe_scroll): Fix downward scrolling.
2009-02-01 Vesa Jääskeläinen <chaac@nic.fi>
Based on patch on bug #25318 created by Bernhard Rosenkraenzer

26
video/i386/pc/vbe.c
View file

@ -1399,13 +1399,25 @@ grub_video_vbe_scroll (grub_video_color_t color, int dx, int dy)
target.mode_info = &render_target->mode_info;
target.data = render_target->data;
for (j = 0; j < height; j++)
{
dst = grub_video_vbe_get_video_ptr (&target, dst_x, dst_y + j);
src = grub_video_vbe_get_video_ptr (&target, src_x, src_y + j);
grub_memmove (dst, src,
width * target.mode_info->bytes_per_pixel);
}
/* Check vertical direction of the move. */
if (dy <= 0)
/* 3a. Move data upwards. */
for (j = 0; j < height; j++)
{
dst = grub_video_vbe_get_video_ptr (&target, dst_x, dst_y + j);
src = grub_video_vbe_get_video_ptr (&target, src_x, src_y + j);
grub_memmove (dst, src,
width * target.mode_info->bytes_per_pixel);
}
else
/* 3b. Move data downwards. */
for (j = (height - 1); j >= 0; j--)
{
dst = grub_video_vbe_get_video_ptr (&target, dst_x, dst_y + j);
src = grub_video_vbe_get_video_ptr (&target, src_x, src_y + j);
grub_memmove (dst, src,
width * target.mode_info->bytes_per_pixel);
}
}
/* 4. Fill empty space with specified color. In this implementation