I was disappointed with the response as well.

In early 2018, 240 comments were submitted to this blog on improvements users wanted. The X-Plane.org forums are filled with users baffled by the lack of functionality. I see at least a couple new posts on the ATC a week!

I recently read a 2011 blog post by Chris on the X-Plane 10 ATC system. I stumbled across the post while figuring out how to build my own ATC TRACONS from data I got from the FAA via a FOIA. I was happy to see the new voice system, thinking that might bring some of the features discussed in that blog post 8 years ago, but I’m not so sure now.

Thank You Sidney.
You have all been very patient and gracious with your replies so need to respond again, I’m just thinking aloud.
I think I have finally grasped what was being presented.
CPU gains through OpenGL calls on Nvidia and AMD GPU’s utilising Vulkan API?
I would expect the gains to be different depending on the CPU/GPU configuration as well though – how bottlenecked the CPU is and therefore different results (gain) based on different graphic settings within Xplane but you were just giving a middle of the road example in your presentation.
I bet you are sick to death of Vulkan so thank you again.

As Abraham Lincoln said, “Don’t believe everything you read on the internet, Eric.”

Sorry for the confusion. The graphs are indeed showing an AMD GPU vs an Nvidia GPU, however, the performance improvements are all on the CPU side! The FPS in the OpenGL graphs is limited by the CPU side in both cases, and a part of the limitation is because the OpenGL driver has a tremendous amount of overhead and is on the CPU side. Keep in mind, the OpenGL driver is implemented by the hardware vendors themselves, so AMD and Nvidia have their own implementation. And with Vulkan, that implementation is what we are sidestepping and why we see improved CPU utilization. This is also why the results are different with AMD and Nvidia, the quality of their drivers are different.

That sounds very promising for VFR and those who love eye
candy if I am reading between the lines correctly.

okay so now I am thoroughly confused.
I thought what was shown was gains on Nvidia and AMD GPU drivers running Vulkan.
I just checked the stream and it may be because the first 2 performance slides show graphs for Nvidia and AMD which obviously we associate with GPU not CPU and then in the next graph you show RX480 and GTX980TI gains again GP{U’s not CPU’s.
If you were talking about CPU gains I would of thought you would have a graph that showed something like Intel i7 2700 before and after vulkan or something?
Obviously I am misunderstanding how the data is being presented but the video is below for reference.
Thank you very much for trying to explain it to me though 😀
https://youtu.be/WuUaq7_9CLo?t=17199

Xplane simcity 🙂

Rumors are Vulcan will be XP12?

Yeah, sorry the slides weren’t clear. Those are CPU gains by _driver stack_.