NAME¶

exupdate - Supporting different screen update methods in a single program. Allegro game programming library.

SYNOPSIS¶

#include <allegro.h>

Example exupdate

DESCRIPTION¶

This program demonstrates how to support double buffering, page flipping, and triple buffering as options within a single program, and how to make things run at a constant rate no matter what the speed of your computer. You have to use this example from the command line to specify as first parameter a number which represents the type of video update you want: 1 for double buffering with memory bitmaps, 2 for page flipping, 3 for triple buffering and 4 for double buffering with system bitmaps. After this, a dialog allows you to select a screen resolution and finally you will see a kaleidoscopic animation, along with a frames per second counter on the top left of the screen.

SEE ALSO¶

BITMAP(3), END_OF_FUNCTION(3), END_OF_MAIN(3), LOCK_FUNCTION(3), LOCK_VARIABLE(3), PALETTE(3), SCREEN_H(3), SCREEN_W(3), acquire_bitmap(3), allegro_error(3), allegro_init(3), allegro_message(3), bitmap_color_depth(3), blit(3), clear_bitmap(3), create_bitmap(3), create_system_bitmap(3), create_video_bitmap(3), desktop_palette(3), destroy_bitmap(3), enable_triple_buffer(3), fixcos(3), fixed(3), fixmul(3), fixsin(3), fixtoi(3), font(3), ftofix(3), generate_332_palette(3), gfx_capabilities(3), gfx_mode_select_ex(3), install_int_ex(3), install_keyboard(3), install_mouse(3), install_timer(3), keypressed(3), line(3), makecol(3), poll_scroll(3), release_bitmap(3), request_video_bitmap(3), screen(3), set_color_depth(3), set_gfx_mode(3), set_palette(3), show_video_bitmap(3), textout_ex(3), textprintf_ex(3), triangle(3), vsync(3), xor_mode(3)