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Let fbsplash display images even when a second buffer is active

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If a previous application uses double buffering and makes the
second buffer visible, fbsplash's images (written to the first
buffer) otherwise won't be visible.

Signed-off-by: Dan Fandrich <dan@coneharvesters.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Dan Fandrich 2011-01-26 11:30:34 -08:00 committed by Denys Vlasenko
parent 3e2834fe72
commit 07078c2966
1 changed files with 4 additions and 1 deletions
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5
miscutils/fbsplash.c
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@ -83,11 +83,14 @@ static void fb_open(const char *strfb_device)
// map the device in memory
G.addr = mmap(NULL,
G.scr_var.xres * G.scr_var.yres
G.scr_var.xres * G.scr_var.yres_virtual
* BYTES_PER_PIXEL /*(G.scr_var.bits_per_pixel / 8)*/,
PROT_WRITE, MAP_SHARED, fbfd, 0);
if (G.addr == MAP_FAILED)
bb_perror_msg_and_die("mmap");
// point to the start of the visible screen
G.addr += G.scr_var.yoffset * G.scr_fix.line_length + G.scr_var.xoffset * BYTES_PER_PIXEL;
close(fbfd);
}