[AD] [ alleg-Bugs-3116161 ] Offscreen font rendering looks wrong

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Bugs item #3116161, was opened at 2010-11-22 22:24
Message generated for change (Tracker Item Submitted) made by siegelord
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Category: Addons
Group: 4.9
Status: Open
Resolution: None
Priority: 7
Private: No
Submitted By: SiegeLord (siegelord)
Assigned to: Nobody/Anonymous (nobody)
Summary: Offscreen font rendering looks wrong

Initial Comment:
Observed on Linux with 5.0rc1. Text rendered on an offscreen bitmap looks noticeably "thinner". Here's test case. The offscreen text is the top line. Needs the DejaVuSans.ttf font from examples:

#include <allegro5/allegro.h>
#include <allegro5/allegro_font.h>
#include <allegro5/allegro_ttf.h>

int main(int argc, char* argv[]){
  
    al_init();
    al_init_font_addon();
    al_init_ttf_addon();
    ALLEGRO_DISPLAY* disp = al_create_display(800, 600);
    al_clear_to_color(al_map_rgb_f(0, 0, 0));
    
    ALLEGRO_FONT* f = al_load_font("DejaVuSans.ttf", 16, 0);

    ALLEGRO_BITMAP* bmp = al_create_bitmap(400, 200);

    al_set_target_bitmap(bmp);
    al_clear_to_color(al_map_rgb_f(0, 0, 0));
    al_draw_text(f, al_map_rgb_f(1,1,1), 0, 0, 0, "Test abcdefg.");
    
    al_set_target_bitmap(al_get_backbuffer(disp));
    al_draw_bitmap(bmp, 0, 0, 0);
    al_draw_text(f, al_map_rgb_f(1,1,1), 0, 28, 0, "Test abcdefg.");

    al_flip_display();
    al_rest(10.0);
}

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