Problems with Vulkan/DXGI interop on AMD GPU

[SaltyBet]

Thread for context:

• Problems with Vulkan/DXGI on AMD GPU SpecialKO/SpecialK#208

Developer comments on that thread:

In the Vulkan case, what's happening is SK is changing the D3D12 SwapChain format, and through a mechanism I don't know, they're copying the Vulkan image over to the D3D12 SwapChain without accounting for format mismatch.
It's difficult for me to develop a fix for this problem without getting my hands on an AMD GPU. I expect if they were doing the copy D3D12-side, SK would already be able to detect the format mismatch and correct it.
So it's either Vulkan-side or some proprietary thing in their driver that is exempt from validating image format I'm leaning heavily toward it's something in the driver I probably can't see. If it were being done D3D12-side and not accounted for, the format mismatch would be caught by the driver and the game would instantly crash.

This seems to work fine on NVIDIA.

[owenzhangzhengzhong]

Hi @SaltyBet,

From reading that thread it seems to be an issue in the vulkan application layer validating image format when translated from D3D12 SwapChain. Can you provide your system specs and a minimally compilable code source that reproduces this issue?

Thanks,
Owen

[SaltyBet]

Specs:

• AMD Radeon RX 6800 XT
  • 24.10.37.04-240823a-407010C-AMD-Software-Adrenalin-Edition
• AMD Ryzen 9 5900X 12-Core Processor
• Windows 10 Professional (64 bit) 22H2

Latest source (from the dev's repo):

• https://github.com/SpecialKO/SpecialK/archive/refs/tags/SK_24_9_26.zip

[owenzhangzhengzhong]

Hi @SaltyBet,

Are you able to provide full runtime of the issue? That's the source for the SK dll that does the injection from application to driver. Which could be the source of the issue, meaning it's not driver related, rather an application issue requiring a SK developer to dig into further. It doesn't seem like there's evidence that it's a driver issue currently.

Thanks,
Owen

[SaltyBet]

Hi, @owenzhangzhengzhong.

Will forward your comment to the developer.