This feature is still experimental but you can already try it by launching the Editor with the following command line argument: In order to alleviate this DX12 allows you to run native graphics jobs in Editor. At the moment, heavily GPU bound scenes with a complex workload are likely to run faster on DX11.Ī major painpoint in Unity is the Editor performance. There are plans to do this sort of reordering in Unity but that will take time. So if you have a complex set of compute shaders it is likely that in DX11 it will be faster. And even when possible, such as in many OpenGL drivers, the driver doesn’t always do it. With DX12 the driver cannot do this, the same applies to Metal and Vulkan. The DX11 driver can do things like reorder compute shader dispatch calls, which it does aggressively. But otherwise huge scenes should be far more stable now. It's not quite as good as in DX11 as we do this essentially on a per frame basis. This has now been implemented so you can overprovision GPU memory.
In DX11 this is fully automatic but DX12 requires us to give it a slight helping hand so to speak. Windows allows you to essentially use more GPU memory than what you have. This is the only functional change you see with the removal of the experimental tag.Īnother feature which has been unique to DX11 is the memory residency management. Experimental tag forced you to add at least one non experimental backend but now DX12 can be the sole backend in a player build. What does this mean in practice? You can now make a player that has only the DX12 backend. We are happy to announce that as of 2022.2.0a17, the DX12 graphics backend is officially out of experimental state. Results based on our testing show that there isn't a substantial difference between DX12 and our other Editor backends to warrant an Experimental tag anymore. In scenarios with a large amount of drawcalls, DX12 beats DX11 handily in standalone with regards to CPU performance. With recent improvements the DX12 backend is now as fast as (or in some cases faster than) DX11 when it comes to CPU usage for the vast majority of use cases. Back in 2020 the per drawcall overhead on the CPU was a bit over double what it was on other backends. As everyone might know, the DX12 backend has been slow, and somewhat unstable, for as long as there has been one.
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