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#include <stdio.h>
#include "allegro5/allegro.h"
#include "allegro5/allegro_font.h"
#include "allegro5/allegro_image.h"
#include "common.c"
static void print(ALLEGRO_FONT *myfont, char *message, int x, int y)
{
al_draw_text(myfont, al_map_rgb(0, 0, 0), x+2, y+2, 0, message);
al_draw_text(myfont, al_map_rgb(255, 255, 255), x, y, 0, message);
}
static bool test(ALLEGRO_BITMAP *bitmap, ALLEGRO_FONT *font, char *message)
{
ALLEGRO_EVENT_QUEUE *queue;
ALLEGRO_EVENT event;
double start_time;
long frames = 0;
double fps = 0;
char second_line[100];
bool quit = false;
queue = al_create_event_queue();
al_register_event_source(queue, al_get_keyboard_event_source());
start_time = al_get_time();
for (;;) {
if (al_get_next_event(queue, &event)) {
if (event.type == ALLEGRO_EVENT_KEY_DOWN) {
if (event.keyboard.keycode == ALLEGRO_KEY_SPACE) {
break;
}
if (event.keyboard.keycode == ALLEGRO_KEY_ESCAPE) {
quit = true;
break;
}
}
}
al_set_blender(ALLEGRO_ADD, ALLEGRO_ONE, ALLEGRO_ZERO);
/* Clear the backbuffer with red so we can tell if the bitmap does not
* cover the entire backbuffer.
*/
al_clear_to_color(al_map_rgb(255, 0, 0));
al_draw_scaled_bitmap(bitmap, 0, 0,
al_get_bitmap_width(bitmap),
al_get_bitmap_height(bitmap),
0, 0,
al_get_bitmap_width(al_get_target_bitmap()),
al_get_bitmap_height(al_get_target_bitmap()),
0);
al_set_blender(ALLEGRO_ADD, ALLEGRO_ONE, ALLEGRO_INVERSE_ALPHA);
/* Note this makes the memory buffer case much slower due to repeated
* locking of the backbuffer. Officially you can't use al_lock_bitmap
* to solve the problem either.
*/
print(font, message, 0, 0);
sprintf(second_line, "%.1f FPS", fps);
print(font, second_line, 0, al_get_font_line_height(font)+5);
al_flip_display();
frames++;
fps = (double)frames / (al_get_time() - start_time);
}
al_destroy_event_queue(queue);
return quit;
}
int main(int argc, char **argv)
{
ALLEGRO_DISPLAY *display;
ALLEGRO_FONT *accelfont;
ALLEGRO_FONT *memfont;
ALLEGRO_BITMAP *accelbmp;
ALLEGRO_BITMAP *membmp;
(void)argc;
(void)argv;
if (!al_init()) {
abort_example("Could not init Allegro.\n");
}
al_install_keyboard();
al_init_image_addon();
al_init_font_addon();
init_platform_specific();
display = al_create_display(640, 400);
if (!display) {
abort_example("Error creating display\n");
}
accelfont = al_load_font("data/font.tga", 0, 0);
if (!accelfont) {
abort_example("font.tga not found\n");
}
accelbmp = al_load_bitmap("data/mysha.pcx");
if (!accelbmp) {
abort_example("mysha.pcx not found\n");
}
al_set_new_bitmap_flags(ALLEGRO_MEMORY_BITMAP);
memfont = al_load_font("data/font.tga", 0, 0);
membmp = al_load_bitmap("data/mysha.pcx");
for (;;) {
if (test(membmp, memfont, "Memory bitmap (press SPACE key)"))
break;
if (test(accelbmp, accelfont, "Accelerated bitmap (press SPACE key)"))
break;
}
return 0;
}
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