Screen washed out

[wolfgangrumpf]

I installed libretro Atari 800 on my retro pie. Managed to get Star Raiders to load, but the star background, instead of being black, is gray. I’ve seen the same effect on other Atari eight bit games running under libretro atari800. Fiddling with the video settings seems to have no effect.

[Darknior]

If i remember fine it is the GAMMA.
But this LR emu is not done, the settings are not on LR but only on the emulator core and there is many problem :(
So bad and it's why i don't use it for the moment ...
I wish some one will update it and continue this core for LR.

[r-type]

hi,
this core have 36 commits behind the libretro one https://github.com/libretro/libretro-atari800
maybe you should report this issue to the libretro repository instead of here.

not sure how it is deal with the libretro core (too many change i didn't track) but here it use the atari800.cfg ($HOME\.atari800.cfg for linux env) to set the setting. and it works like official core.

COLOURS_NTSC_SATURATION=0
COLOURS_NTSC_CONTRAST=0
COLOURS_NTSC_BRIGHTNESS=0
COLOURS_NTSC_GAMMA=2.35
COLOURS_NTSC_HUE=0
COLOURS_NTSC_GTIA_DELAY=26.8
COLOURS_NTSC_EXTERNAL_PALETTE=
COLOURS_NTSC_EXTERNAL_PALETTE_LOADED=0
COLOURS_NTSC_ADJUST_EXTERNAL_PALETTE=0
COLOURS_PAL_SATURATION=0
COLOURS_PAL_CONTRAST=0
COLOURS_PAL_BRIGHTNESS=0
COLOURS_PAL_GAMMA=2.35
COLOURS_PAL_HUE=0
COLOURS_PAL_GTIA_DELAY=23.2
COLOURS_PAL_EXTERNAL_PALETTE=
COLOURS_PAL_EXTERNAL_PALETTE_LOADED=0
COLOURS_PAL_ADJUST_EXTERNAL_PALETTE=0