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dosowisko: lock bitmap before generating checkerboard pattern

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Sebastian Krzyszkowiak 2015-03-16 14:32:20 +01:00
parent feef69ce03
commit 5172db6fe3
1 changed files with 2 additions and 0 deletions
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2
src/gamestates/dosowisko.c
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@ -157,12 +157,14 @@ void* Gamestate_Load(struct Game *game, void (*progress)(struct Game*)) {
data->checkerboard = al_create_bitmap(game->viewport.width, game->viewport.height);
al_set_target_bitmap(data->checkerboard);
al_lock_bitmap(data->checkerboard, ALLEGRO_PIXEL_FORMAT_ANY, ALLEGRO_LOCK_WRITEONLY);
int x, y;
for (x = 0; x < al_get_bitmap_width(data->checkerboard); x=x+2) {
for (y = 0; y < al_get_bitmap_height(data->checkerboard); y=y+2) {
al_put_pixel(x, y, al_map_rgb(0,0,0));
}
}
al_unlock_bitmap(data->checkerboard);
al_set_target_backbuffer(game->display);
(*progress)(game);