Does al_load_bitmap_f work
Initially I thought it was a problem with Allegro.pas, but I did some testing with C and I have the same problem: it returns NULL.
I'm using Linux Xubuntu 16.04.3 updated and latest Allegro 5.2.3.
To reproduce the problem, get the ex_bitmap.c example and just add this at the beginning:
Then search the line "bitmap = al_load_bitmap(filename);" and change it:
AFAIK it should work, but it didn't. Debugging with GDB it says in function al_load_bitmap_flags_f that "h" is NULL. Didn't look deeper.
Judging by a quick look at the source, the string argument should no longer be the filename, but the result of al_identify_bitmap or al_identify_bitmap_f - possibly the file extension but I'm not sure. Does that help?
Yep, canonical extension with dot - see here.
Thread #617136. Printed from Allegro.cc
Did a test (in Pascal) and didn't work.
I can't do the test in C now but I will.
Tested in C and it works. Then I find the problem with Pascal: the destination buffer pointer wasn't used properly. Now it works.
Anyway, the problem seems that Mr. Silly Me didn't read the documentation.