request_video_bitmap(3alleg4) [opendarwin man page]
request_video_bitmap(3alleg4) Allegro manual request_video_bitmap(3alleg4)NAME
request_video_bitmap - Triple buffering page flip request. Allegro game programming library.
SYNOPSIS
#include <allegro.h>
int request_video_bitmap(BITMAP *bitmap);
DESCRIPTION
This function is used for triple buffering. It requests a page flip to display the specified video bitmap object, but returns immediately
rather than waiting for a retrace. The flip will then take place during the next vertical retrace, but you can carry on running other code
in the meantime and use the poll_scroll() routine to detect when the flip has actually taken place. Triple buffering is only possible on
certain hardware: see the comments about request_scroll(). Example:
int current_page;
BITMAP *video_page[3];
...
/* Create pages for page flipping */
video_page[0] = create_video_bitmap(SCREEN_W, SCREEN_H);
video_page[1] = create_video_bitmap(SCREEN_W, SCREEN_H);
video_page[2] = create_video_bitmap(SCREEN_W, SCREEN_H);
current_page = 0;
...
/* draw the screen and flip pages */
draw_screen(video_page[current_page]);
do {
} while (poll_scroll());
request_video_bitmap(video_page[current_page]);
current_page = (current_page+1)%3;
...
RETURN VALUE
Returns zero on success and non-zero on failure.
SEE ALSO poll_scroll(3alleg4), request_scroll(3alleg4), gfx_capabilities(3alleg4), create_video_bitmap(3alleg4), scroll_screen(3alleg4),
ex3buf(3alleg4), exupdate(3alleg4)Allegro version 4.4.2 request_video_bitmap(3alleg4)
Check Out this Related Man Page
request_video_bitmap(3alleg4) Allegro manual request_video_bitmap(3alleg4)NAME
request_video_bitmap - Triple buffering page flip request. Allegro game programming library.
SYNOPSIS
#include <allegro.h>
int request_video_bitmap(BITMAP *bitmap);
DESCRIPTION
This function is used for triple buffering. It requests a page flip to display the specified video bitmap object, but returns immediately
rather than waiting for a retrace. The flip will then take place during the next vertical retrace, but you can carry on running other code
in the meantime and use the poll_scroll() routine to detect when the flip has actually taken place. Triple buffering is only possible on
certain hardware: see the comments about request_scroll(). Example:
int current_page;
BITMAP *video_page[3];
...
/* Create pages for page flipping */
video_page[0] = create_video_bitmap(SCREEN_W, SCREEN_H);
video_page[1] = create_video_bitmap(SCREEN_W, SCREEN_H);
video_page[2] = create_video_bitmap(SCREEN_W, SCREEN_H);
current_page = 0;
...
/* draw the screen and flip pages */
draw_screen(video_page[current_page]);
do {
} while (poll_scroll());
request_video_bitmap(video_page[current_page]);
current_page = (current_page+1)%3;
...
RETURN VALUE
Returns zero on success and non-zero on failure.
SEE ALSO poll_scroll(3alleg4), request_scroll(3alleg4), gfx_capabilities(3alleg4), create_video_bitmap(3alleg4), scroll_screen(3alleg4),
ex3buf(3alleg4), exupdate(3alleg4)Allegro version 4.4.2 request_video_bitmap(3alleg4)
What is the point of this? Whenever I close my shell it appends to the history file without adding this. I have never seen it overwrite my history file.
# When the shell exits, append to the history file instead of overwriting it
shopt -s histappend (3 Replies)
Greetings,
I'm trying to delete a file with a weird name from within Terminal on a Mac.
It's a very old file (1992) with null characters in the name: ââWord FinderÂŽ Plusâ˘.
Here are some examples of what I've tried:
12FX009:5 dpontius$ ls
ââWord FinderÂŽ Plusâ˘
12FX009:5 dpontius$ rm... (29 Replies)