Every Dreamcast cores give me black screen

all of the dreamcast cores i load, if i try to load a gdi game, i get “failed to load content”.if i try to click on “resume”, i have a black screen. if i set to launch the emu directly on the bios.,i have black screen

i read online about disablign shader and turning on HW Shared Context Enable …but if i go to core options…i don’t have any option called HW Shared Context Enable !!!

what do i need to do?

here’s the log

https://pastebin.com/aEZPGwzt

…anyone can help me?

Try switching to GL as the driver. You can also try resetting the core options in retroarch-core-options.cfg by deleting any mention of Reicast.

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Correct, the Dreamcast cores don’t support Vulkan.

I already change the driver from vulkan to gl and same results.for some random reason it managed to get to the main dreamcast bios ONLY ONCE and never managed to get that again

Ok, can you post a log of you using GL?

sure here it is

https://pastebin.com/hFpW0a9g

I reset the core config as suggested above, set gl as driver, and exit. I now tried to run a game, it doesn’t run but at least i can get 100% to the dreamcast bios\main menu. IF i try to go to “disc” it will say no disc inserted

You still seem to be using vulkan at the start of that log but it switches to GL at some point…? Anyway, once the core gets started, i don’t see any errors or anything. Can you try some different games/formats?

ok, now redream manage to run the game quite fine i must say.

Reicast still boots back to main dreamcast menu. i set “restart to bios” to OFF, now the game seems to run in reicast, but i can only see the top right corner of it :\

here’s the new log

https://pastebin.com/bDV90q9Y

and a pic of what i’m talking about

make sure you don’t have any shaders loaded, and if you adjusted the internal resolution in the core options, make sure you exit and then re-load.

no shaders loaded at all, the resolution was 640x480 and was already like that. I then changed it to something higher but same issue.

Its strange though because i get this cropped screen only when the game actually launches…before the game runs, when you have the dreamcast spiral logo, the resolution is perfect there

ok must be the game then, because i tried another game (EUR region)and looks fine . the previous one was japanese so maybe that could be the reason why

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