Two Vulkan Issues in A27 (and unrelated choppiness caused by control groups)

[little Guest]

It seems that no one has mentioned these two Vulkan issues yet.

1. With Vulkan in fullscreen, after pressing Alt + Tab, the screen remains stuck on the 0ad display.
   No issue with OpenGL, nor with Vulkan in windowed mode.
   This occurs on a VGA (D-sub) monitor, but there is no issue when using HDMI to a USB video capture card connected to an old laptop.
    
2. With Vulkan and GPU skinning enabled, the screen jumps to the desktop and the program shuts down when loading the game.
   No crash report.
    

• Win 10, Vega igpu, driver: Adrenalin 24.9.1 (latest)

 

By the way, is it a known issue that when multiple control groups control a large number of units (e.g., 632), moving the camera—even without selecting units—feels a bit choppy?

 

(issue2)userreport_hwdetect.txt(issue2)system_info.txt(issue2)mainlog.html

Edited March 9 by little Guest
Text and grammar corrections, image from URL instead of attachment.

[vladislavbelov]

Hi! Thank you for the report! (And sorry for the delayed answer)

On 08/03/2025 at 4:18 PM, little Guest said:

With Vulkan in fullscreen, after pressing Alt + Tab, the screen remains stuck on the 0ad display.
No issue with OpenGL, nor with Vulkan in windowed mode.
This occurs on a VGA (D-sub) monitor, but there is no issue when using HDMI to a USB video capture card connected to an old laptop.

Is the game still playable after multiple Alt+Tab? So it just stays on top?

On 08/03/2025 at 4:18 PM, little Guest said:

With Vulkan and GPU skinning enabled, the screen jumps to the desktop and the program shuts down when loading the game.
No crash report.

Does it crash in the game or in the main menu? When GPU skinning is disable everything works fine?

On 08/03/2025 at 4:18 PM, little Guest said:

By the way, is it a known issue that when multiple control groups control a large number of units (e.g., 632), moving the camera—even without selecting units—feels a bit choppy?

If profiler doesn't show performance issues then I'd expect such choppiness.

[little Guest]

I'm glad to see your reply.

On 31/03/2025 at 1:04 AM, vladislavbelov said:

Is the game still playable after multiple Alt+Tab? So it just stays on top?

Yes. After the second Alt + Tab, it's back.

I'm not sure what you mean by "So it just stays on top?"
However, from the previously provided images, we can see that in "after Alt+Tab," the mouse cursor in both Vulkan fullscreen mode and Vulkan windowed mode is in the shape of a capital "I," which should indicate that the switch to the browser was successful.

On 31/03/2025 at 1:04 AM, vladislavbelov said:

Does it crash in the game or in the main menu? When GPU skinning is disable everything works fine?

In the game. It is fine in the main menu.

Yes. It is fine when GPU skinning is disable.

On 31/03/2025 at 1:04 AM, vladislavbelov said:

If profiler doesn't show performance issues then I'd expect such choppiness.

Additional information: Attached are three screenshots showing the cases with control groups, after removing control groups, and selecting 300 units.

It seems that the main difference lies in the gui sim update.

The impact of control groups (control a large number of units) is more severe than selecting 300 units.

Edited 19 hours ago by little Guest
Shorten the quotation.

[little Guest]

On 08/03/2025 at 11:18 PM, little Guest said:

With Vulkan and GPU skinning enabled, the screen jumps to the desktop and the program shuts down when loading the game.
No crash report.

The following link is a video that I tried to record using a video capture card.
https://i.imgur.com/IbzBkIT.mp4

I hope this makes the description of issue 2 clearer.