DirectX 12

[Kenjiro75 59]

What do you think? Will the FPS number rise when they implement DirectX 12 to the sim?

[cianpars 1,163]

-10

[Dominique_K 10,133]

what do I think ? I think that : 😱.

[Kenjiro75 59]

Why? So why do they plan to implement that at all??

[abrams_tank 7,392]

21 minutes ago, Kenjiro75 said:

What do you think? Will the FPS number rise when they implement DirectX 12 to the sim?

No.  Asobo already said MSFS probably won't have a significant FPS boost with DirectX 12.  Sorry, I don't have the link.  But it was in one of their Twitch Q&As, I think from last year.  You can go search for it if you want.  

That Twitch Q&A was a while ago, but I believe it was either Jorg or Seb who said it.

Edited April 21, 2021 by abrams_tank

[hansb57 492]

I think it has more to do with Xbox-PC streamlining than with performance

DirectX 12 Ultimate is the first graphics API that breaks that rule. It will be used on both Windows as well as the next-gen Xbox Series X. With DX12 Ultimate, MS is basically integrating the two platforms.

https://www.hardwaretimes.com/what-is-the-difference-between-directx-11-and-directx-12/

[Kenjiro75 59]

Well, "significant" is the key word here. If significant is like +15 fps, then I'd be happy even with +5. Every frame matters!

[hansb57 492]

5 FPS would mean a 10-15% increase for most users and that is not significant thats huge.

Not significant in my book and with 40 fps would be lower than  1 or 2. (thats stil 5%  and I would call 5% significant)

[G-RFRY 1,706]

DX12 is needed for XBOX, and as the devs stated in a Q&A last year for the full implementation PBR and DLSS not for performance gain. 

[Amon1973 1,421]

3 minutes ago, abrams_tank said:

No.  Asobo already said MSFS probably won't have a significant FPS boost with DirectX 12.  Sorry, I don't have the link.  But it was in one of their Twitch Q&As, I think from last year.  You can go search for it if you want.  

That Twitch Q&A was a while ago, but I believe it was either Jorg or Seb who said it.

You maybe right, but IIRC LR claimed that simmers shouldn't expect a significant FPS increase when they were implementing Vulkan into Xplane11, what happened? Simmers got a significant FPS increase as it happened. I think this claim by Asobo is so that we don't expect too much performance increase, but are pleasantly surprised... Everyone wins. This is what happened to me on Xplane11.

I suppose they were moving from a slow and cumbersome OpenCL to a modern API like Vulkan, so who knows what performance increase we might gain?  Similarly P3D v5 received a rather massive increase when LM moved P3D from V4 (DirectX 11) to V5 (DirectX 12) so I'm choosing to be hopeful and positive about the move of MSFS to DirectX 12

[Donka 641]

I believe the guidance here is we may see performance improvements with DX12 and that would be a bonus but that is not the reason for the switch to the newer API and should not be an expectation.

Past experience with other sims does give us hope though. 

[Dominique_K 10,133]

39 minutes ago, Kenjiro75 said:

Why?  

Why 🤣? 

Nine months after release, about four years after they begun the work the sim is still unstable and each upgrade brings bugs and/or some downgrading.  

And the only experience we have of a sim  going DX12 is P3D5 which brought to their knees the mainstream graphic cards to the point that the only  recommended solution was to reduce the game settings.

So I do not welcome with cheerfulness the idea of MFS going DX12, a major change.

 

 

Edited April 21, 2021 by Dominique_K

[bobcat999 8,444]

I think it may bring some performance increase, but it will be slight, not anywhere near 15-20% for example.
Even a 10% gain only gives an extra 3 FPS when you struggle for 30 FPS, but it may just put some users just on the right side of the line to hold on to 30 FPS (this what I hope for at least).

Also, I think MS/Asobo don't want to get any hopes up.  They did say the switch to DX12 was mainly for compatibility (Xbox), and the ability to add extra features like ray-tracing.
Just some added smoothness and freeing up the main thread a bit would make it worth it I think. 

It will obviously bring its fair share of problems also, such as potentially more VRAM usage as seen with P3D DX12, and issues with draw distance etc. like with Xplane Vulkan. 

My main fear is the obvious one - I just hope it doesn't affect the sim negatively when introduced.  A DX11 / DX12 toggle switch would be good!  

[abrams_tank 7,392]

1 hour ago, eaim said:

You maybe right, but IIRC LR claimed that simmers shouldn't expect a significant FPS increase when they were implementing Vulkan into Xplane11, what happened? Simmers got a significant FPS increase as it happened. I think this claim by Asobo is so that we don't expect too much performance increase, but are pleasantly surprised... Everyone wins. This is what happened to me on Xplane11.

I suppose they were moving from a slow and cumbersome OpenCL to a modern API like Vulkan, so who knows what performance increase we might gain?  Similarly P3D v5 received a rather massive increase when LM moved P3D from V4 (DirectX 11) to V5 (DirectX 12) so I'm choosing to be hopeful and positive about the move of MSFS to DirectX 12

Well, I hope we get an FPS gain with DirectX 12.  But I'm not expecting it, based on what Asobo said at the live Twitch Q&A.  But yeah, if Asobo could surprise us and give us FPS gains with DirectX 12, that would be awesome of course.

[Bobsk8 12,525]

It's simple, people will try DX 12 , find out they need a new GPU to run it properly  and start trying to figure out how they are going to come up with $1800 to buy one in today's market.