vk: Refactor render target code

[kd-11]

Base commit for a longer sequence of completed works

[Megamouse]

I wonder how much of the code is copy pasta (don't wanna review copy pasta (at least as far as I can review the GPU code))

[kd-11]

I wonder how much of the code is copy pasta (don't wanna review copy pasta (at least as far as I can review the GPU code))

All of it lol. It's just moving code from .h to .cpp

[Megamouse]

then it should be fine after all the auto-indentation errors were resolved.
Maybe it is worth looking at includes in the header now.
If we're lucky we can move something to the cpp

[kd-11]

That's still low prio for me, there's still a fairly severe leak happening somewhere between GPU and CPU, and I don't have it 100% patched. I've been picking at it for something like 100h by now and I keep finding bugs and patching them, but new problems just show up with every fix. Anyway, I'm sitting on quite a lot of code related to this stuff, I just want to start committing stuff slowly while I keep tracking down the leak. "Lucky" for me, the test scenario has random addresses each time, making debugging the problem super fun incredibly stressful.