Question RE UE4/5 rendering

[Mfarshore]

What causes the floating polygons to appear, as in the screen shot attached. The image is from a game Astrometica recently released. Running under CrossOver24 with UE4 via cxpatcher. Tried it patching Base and Latest MVK+UE4 hack and without Patch DXVK with no luck. This is something I have seen in both UE4 and UE5. Any idea how to get around it using UE scripting additions?

[Mfarshore]

I found that enabling MSync will fix this problem, for this particular game. The graphics pipeline was getting misaligned with the CPU.

[italomandara]

DXVK is using MoltenVK as a vulkan translation layer, MVK isn't perfect as we speak it has probably to do with synchronization, sice MSYNC fixes it (which i almost always recommend) I'm not sure why MSYNC affects the GPU, but it's definitely an issue in MoltenVK.

[Mfarshore]

Yeah I realized that it involved the shader pipeline and MoltenVK. When I saw that the pipeline was getting backup as the problems started I just took a stab and activated MSync on a hunch. MSync doesn’t affect the GPU directly. It just permits the shader pipeline to become unclogged so that the GPU can handle tasks in a timely manner. I watched the various HUDs before and after starting MSync and the GPU usage definitely went down once the pipeline was unclogged. On another matter CX 25 is out today I think. About how long until CXPatcher catches up?

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On Mar 11, 2025, at 5:00 PM, Italo ***@***.***> wrote: DXVK is using MoltenVK as a vulkan translation layer, MVK isn't perfect as we speak it has probably to do with synchronization, sice MSYNC fixes it (which i almost always recommend) I'm not sure why MSYNC affects the GPU, but it's definitely an issue in MoltenVK. — Reply to this email directly, view it on GitHub <#197 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/BAFZFMEVBZ322TEGQAKPSBD2T5TI7AVCNFSM6AAAAABYZZZDZ2VHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTENBWG43TIMY>. You are receiving this because you authored the thread.

[italomandara]

I'll start working on it tomorrow