Hardware accelerated games/programs using Khronos

Is VSYNC supposed to be working on this by now?

Is VSYNC supposed to be working on this by now?

It’s still disabled otherwise it causes the RPi to freeze.

@Chris Gransden: So it can’t be made to work? Tearing is ugly. No way around it?

Check config/txt has,

gpu_mem=128

The resolution must be <= 1080p

Also make sure cmdline/txt doesn’t have disable_mode_changes. It seems to be more reliable without.

With those settings it still immediately seg faults, always in the same place from RPI_VideoInit().

I tried swapping the SD card to my Pi 1 and I still get the same seg fault on that Pi as well. I did have hardware-accelerated Neverball running well under Linux on that Pi, suggesting the graphics hardware was OK. One thing I’m going to try is replacing my USB power cable with a higher rated one as the Pi 3 seems to have cooked it.

When I run *khronosstatus it says there were no GL errors (I guess SDL never got as far as initializing OpenGL ES). I also found the GL bouncing ball demo works but I expect that’s software rendering.

Are there any dependencies I could be missing that aren’t included in your khronos.zip Chris?

OK those seg faults in RPI_VideoInit() do look to have been due to insufficient voltage due to an inadequate USB lead and/or power supply.

I wired a bench power supply to the GPIO pins and Dark Places runs nicely. It’s very cool.

Most of you more experienced Pi users probably already know this but, I think due to the lack of voltage, I’ve had to re-image my SD card about four or five times. I was still getting an error running Neverball but I noticed the card has corrupted yet again, even with the regulated 5 volts, so I’m going to try again with a new SD card. Maybe the other one got permanently damaged. My Pi 1 was never this fussy about power.

Just to finish the story, with the new SD card Neverball also now runs!

Moral:

Thou shalt checketh thy power supply, thy power cable, and ye integrity of thy SD card.