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#include <stdio.h>
#include "allegro5/allegro.h"
#include "allegro5/allegro_image.h"
#include "allegro5/allegro_font.h"
#include "allegro5/allegro_primitives.h"
#include <math.h>
#include "common.c"
int main(int argc, char **argv)
{
const char *filename;
ALLEGRO_DISPLAY *display;
ALLEGRO_BITMAP *buffer, *bitmap, *subbitmap, *buffer_subbitmap;
ALLEGRO_BITMAP *overlay;
ALLEGRO_TIMER *timer;
ALLEGRO_EVENT_QUEUE *queue;
ALLEGRO_TRANSFORM transform;
bool software = false;
bool redraw = false;
bool blend = false;
bool use_subbitmap = true;
int w, h;
ALLEGRO_FONT* font;
ALLEGRO_FONT* soft_font;
if (argc > 1) {
filename = argv[1];
}
else {
filename = "data/mysha.pcx";
}
if (!al_init()) {
abort_example("Could not init Allegro.\n");
}
al_init_primitives_addon();
al_install_mouse();
al_install_keyboard();
al_init_image_addon();
al_init_font_addon();
init_platform_specific();
display = al_create_display(640, 480);
if (!display) {
abort_example("Error creating display\n");
}
subbitmap = al_create_sub_bitmap(al_get_backbuffer(display), 50, 50, 640 - 50, 480 - 50);
overlay = al_create_sub_bitmap(al_get_backbuffer(display), 100, 100, 300, 50);
al_set_window_title(display, filename);
bitmap = al_load_bitmap(filename);
if (!bitmap) {
abort_example("%s not found or failed to load\n", filename);
}
font = al_load_font("data/bmpfont.tga", 0, 0);
if (!font) {
abort_example("data/bmpfont.tga not found or failed to load\n");
}
al_set_new_bitmap_flags(ALLEGRO_MEMORY_BITMAP);
buffer = al_create_bitmap(640, 480);
buffer_subbitmap = al_create_sub_bitmap(buffer, 50, 50, 640 - 50, 480 - 50);
soft_font = al_load_font("data/bmpfont.tga", 0, 0);
if (!soft_font) {
abort_example("data/bmpfont.tga not found or failed to load\n");
}
timer = al_create_timer(1.0 / 60);
queue = al_create_event_queue();
al_register_event_source(queue, al_get_keyboard_event_source());
al_register_event_source(queue, al_get_display_event_source(display));
al_register_event_source(queue, al_get_timer_event_source(timer));
al_start_timer(timer);
w = al_get_bitmap_width(bitmap);
h = al_get_bitmap_height(bitmap);
al_set_target_bitmap(overlay);
al_identity_transform(&transform);
al_rotate_transform(&transform, -0.06);
al_use_transform(&transform);
while (1) {
ALLEGRO_EVENT event;
al_wait_for_event(queue, &event);
if (event.type == ALLEGRO_EVENT_DISPLAY_CLOSE)
break;
if (event.type == ALLEGRO_EVENT_KEY_DOWN) {
if (event.keyboard.keycode == ALLEGRO_KEY_S) {
software = !software;
if (software) {
/* Restore identity transform on display bitmap. */
ALLEGRO_TRANSFORM identity;
al_identity_transform(&identity);
al_use_transform(&identity);
}
} else if (event.keyboard.keycode == ALLEGRO_KEY_L) {
blend = !blend;
} else if (event.keyboard.keycode == ALLEGRO_KEY_B) {
use_subbitmap = !use_subbitmap;
} else if (event.keyboard.keycode == ALLEGRO_KEY_ESCAPE) {
break;
}
}
if (event.type == ALLEGRO_EVENT_TIMER)
redraw = true;
if (redraw && al_is_event_queue_empty(queue)) {
double t = 3.0 + al_get_time();
ALLEGRO_COLOR tint;
redraw = false;
al_set_blender(ALLEGRO_ADD, ALLEGRO_ONE, ALLEGRO_ONE);
if(blend)
tint = al_map_rgba_f(0.5, 0.5, 0.5, 0.5);
else
tint = al_map_rgba_f(1, 1, 1, 1);
if(software) {
if(use_subbitmap) {
al_set_target_bitmap(buffer);
al_clear_to_color(al_map_rgb_f(1, 0, 0));
al_set_target_bitmap(buffer_subbitmap);
} else {
al_set_target_bitmap(buffer);
}
} else {
if(use_subbitmap) {
al_set_target_backbuffer(display);
al_clear_to_color(al_map_rgb_f(1, 0, 0));
al_set_target_bitmap(subbitmap);
} else {
al_set_target_backbuffer(display);
}
}
/* Set the transformation on the target bitmap. */
al_identity_transform(&transform);
al_translate_transform(&transform, -640 / 2, -480 / 2);
al_scale_transform(&transform, 0.15 + sin(t / 5), 0.15 + cos(t / 5));
al_rotate_transform(&transform, t / 50);
al_translate_transform(&transform, 640 / 2, 480 / 2);
al_use_transform(&transform);
/* Draw some stuff */
al_clear_to_color(al_map_rgb_f(0, 0, 0));
al_draw_tinted_bitmap(bitmap, tint, 0, 0, 0);
al_draw_tinted_scaled_bitmap(bitmap, tint, w / 4, h / 4, w / 2, h / 2, w, 0, w / 2, h / 4, 0);//ALLEGRO_FLIP_HORIZONTAL);
al_draw_tinted_bitmap_region(bitmap, tint, w / 4, h / 4, w / 2, h / 2, 0, h, ALLEGRO_FLIP_VERTICAL);
al_draw_tinted_scaled_rotated_bitmap(bitmap, tint, w / 2, h / 2, w + w / 2, h + h / 2, 0.7, 0.7, 0.3, 0);
al_draw_pixel(w + w / 2, h + h / 2, al_map_rgb_f(0, 1, 0));
al_put_pixel(w + w / 2 + 2, h + h / 2 + 2, al_map_rgb_f(0, 1, 1));
al_draw_circle(w, h, 50, al_map_rgb_f(1, 0.5, 0), 3);
al_set_blender(ALLEGRO_ADD, ALLEGRO_ONE, ALLEGRO_ZERO);
if(software) {
al_draw_text(soft_font, al_map_rgba_f(1, 1, 1, 1),
640 / 2, 430, ALLEGRO_ALIGN_CENTRE, "Software Rendering");
al_set_target_backbuffer(display);
al_draw_bitmap(buffer, 0, 0, 0);
} else {
al_draw_text(font, al_map_rgba_f(1, 1, 1, 1),
640 / 2, 430, ALLEGRO_ALIGN_CENTRE, "Hardware Rendering");
}
/* Each target bitmap has its own transformation matrix, so this
* overlay is unaffected by the transformations set earlier.
*/
al_set_target_bitmap(overlay);
al_set_blender(ALLEGRO_ADD, ALLEGRO_ONE, ALLEGRO_ONE);
al_draw_text(font, al_map_rgba_f(1, 1, 0, 1),
0, 10, ALLEGRO_ALIGN_LEFT, "hello!");
al_set_target_backbuffer(display);
al_flip_display();
}
}
al_destroy_bitmap(bitmap);
return 0;
}
/* vim: set sts=4 sw=4 et: */
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