SDL3

@Capehill
Awesome news. Can you please give some extra context about SDL_PROP_IOSTREAM_AMIGAOS4_USE_BUFFERED and if this is something we have to enable in our apps?

@walkero

According to dos.library documentation, "Buffered I/O is more efficient for small reads and writes". If you use SDL_IOStreams, you may need to test both to see.

@Capehill
Quote:Compared to unbuffered dos.library (IDOS->Open(), IDOS->Read(), IDOS->Write(), IDOS->Close(), etc.) and unbuffered POSIX low level I/O (open64(), read(), write(), close(), etc.): Yes.
Compared to C library buffered I/O (fopen64(), fread(), fwrite(), fclose(), etc.): No, using buffered C library I/O is often faster than using buffered dos.library I/O (IDOS->FOpen(), IDOS->FRead(), IDOS->FWrite(), IDOS->FClose(), etc.). At least in case of newlib and ixemul, no idea about libnix, clib2, clib4 and vclib.

Maybe a little off topic, I was asking myself to which SDL versions should the links point to in the SOBJs: folder after having freshly installed AmigaOS 4.1.9.1 (or whatever confusing name the latest available public version has).

e.g. should libSDL.so point to libSDL-1.2 or libSDL2-2.3.so or the even newer libSDL3-3.xx.so?

Same question about the other links ins SOBJs:

thanks.

@joerg

Thanks for information. SDL3 uses dos.library's (F)Read/(F)Write functions and this can be now selected by the developer.

@Tuvok

SDL1, 2 and 3 are different and incompatible libraries.

So,

libSDL.so should point to libSDL-1.2.so.
libSDL2.so should point to libSDL2-2.x.y.so.
libSDL3.so should point to libSDL3-3.x.y.so.

If you have the AmigaOS 4 SDK installed, you can check which shared objects some binary is using by:

readelf -d binary_name

@Capehill

Thank you very much!!

@Capehill
Thank you very much for your work on SDL* for AOS4.
I checked out your latest version of SDL3, the ioq3 fork with the SDL3 patch, and SDL2.
It works very well and plays great.
Thanks!!!

@smarkusg

Cool. I noticed that GL2 renderer can be now started with minor modifications, but unfortunately, there seem to be some texture coordinate issues and crashes later.

3.2.24 is available: https://github.com/AmigaPorts/SDL/releases/tag/v3.2.24-amigaos4

AmigaOS 4 changes:

Quote:

Direct link: https://github.com/AmigaPorts/SDL/rele ... v3.2.24-amigaos4/SDL3.lha

@Capehill
Thank you for the update!