and even though it's the developer's fault Nvidia has to fix it with new drivers.
“Nearly every game ships broken. We’re talking major AAA titles from vendors who are everyday names in the industry. In some cases, we’re talking about blatant violations of API rules – one D3D9 game never even called BeginFrame/EndFrame. Some are mistakes or oversights – one shipped bad shaders that heavily impacted performance on NV drivers. These things were day to day occurrences that went into a bug tracker. Then somebody would go in, find out what the game screwed up, and patch the driver to deal with it. There are lots of optional patches already in the driver that are simply toggled on or off as per-game settings, and then hacks that are more specific to games – up to and including total replacement of the shipping shaders with custom versions by the driver team. Ever wondered why nearly every major game release is accompanied by a matching driver release from AMD and/or NVIDIA? There you go.”
Multi-GPU setups are a broken pain in the ass.
“You cannot begin to conceive of the number of failure cases that are involved until you see them in person. I suspect that more than half of the total software effort within the IHVs is dedicated strictly to making multi-GPU setups work with existing games. (And I don’t even know what the hardware side looks like.) If you’ve ever tried to independently build an app that uses multi GPU – especially if, god help you, you tried to do it in OpenGL – you may have discovered this insane rabbit hole. There is ONE fast path, and it’s the narrowest path of all.”
More prove of the struggle that is PC gaming.
http://www.dsogaming.com/news/ex-nvidia-driver-developer-on-why-every-triple-a-games-ship-broken-multi-gpus/
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