APIs, Ubershaders and NVIDIA hardware

[Helios]

Or ever.

[JonnyH]

There's not really any gamecube hardware that maps well to the extra compute capabilities exposed by the CUDA api, or any of the new stuff (big low-precision matrix MADs for the "tensor" stuff, or BVH lookup from their raytracing stuff).

So it's pretty unlikely they'll help emulation.

[eckso]

(01-03-2019, 05:39 AM)JosJuice Wrote: Isn't there the problem with async ubershaders still stuttering if you use OpenGL on Nvidia?

So synchronous ubershaders are ok with opengl in nvidia I guess? I was testing it with the same card but had to lower the graphics a bit, kept IR x3 but no SSAA or Anisotropic.

[JosJuice]

(04-08-2019, 03:52 AM)eckso Wrote: So synchronous ubershaders are ok with opengl in nvidia I guess? I was testing it with the same card but had to lower the graphics a bit, kept IR x3 but no SSAA or Anisotropic.

Well, they don't have any stuttering... But they are extremely slow, just like on every other backend.

[eckso]

I think that for now until nvidia fixes the drivers (unlikely) I will stick to DX11 with Hybrid Ubershaders and Adaptive V-sync or borderless Window.

I thought that with the videocommon merge all backends disparities were ironed out but I observed differencies, for example in Vulkan. I guess DX11 has been longer tested and graphic compatibility should be a bit better(?)

[mstreurman]

(04-08-2019, 05:19 PM)eckso Wrote: I think that for now until nvidia fixes the drivers (unlikely) I will stick to DX11 with Hybrid Ubershaders and Adaptive V-sync or borderless Window.

I thought that with the videocommon merge all backends disparities were ironed out but I observed differencies, for example in Vulkan. I guess DX11 has been longer tested and graphic compatibility should be a bit better(?)

You cannot say you see disparities or differences without giving examples... because if there are differences or disparities they should be handled/fixed. If you mean the stuttering of Async with nVidia on anything but D3D… that is not Dolphin's fault, that problem lies in the drivers of nVidia that block/pause certain threads to run while it is doing something else, and that is why it stutters.