Steam Runtime Fun

I've had a bit of fun with the Steam Runtime, this week. I've recently bought a Framework Desktop machine, and although Eggnob's been running fine, locally, it's been hard-crashing on the Steam Deck and, I later discovered, on the Desktop. In both cases, it looks like a hard crash in the GPU, and in both cases, it's down to the setup of the post processing shaders. And yet, my laptop (also an AMD machine) runs the game fine, locally and through Steam. Er... This is pretty amusing to me because the shaders are the simplest thing in the world. I wasn't expecting to touch them again, but here we are, on round three. Annnyway, after a lot of digging, it appears that the current Steam runtime, Sniper, is on SDL 3.4.4. My Linux machines are on 3.4.8. SDL_GPU's under a bit of churn atm, for obvious reasons (it's still "new"), but I can see the RADV offsets into libvulken from the coredumps, so I'm reasonable confident that something's changed in the Vulken pipeline creation path. Part of me…