| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0005502 | DarkRadiant | Renderer | public | 24.01.2021 16:35 | 13.04.2024 14:01 |
| Reporter | Dragofer | Assigned To | orbweaver | ||
| Priority | normal | Severity | normal | Reproducibility | N/A |
| Status | resolved | Resolution | fixed | ||
| Product Version | 2.10.0 | ||||
| Fixed in Version | 3.9.0 | ||||
| Summary | 0005502: Surfaces render through other surfaces on AMD cards | ||||
| Description | AMD machines seem to have problems with DR's camera renderer: you can often see surfaces through other surfaces (broken depth testing?) in a jagged alternating pattern, which gets worse with the far clip plane enabled. The Chooser windows seem to always have the far clip plane enabled regardless of menu settings, which makes it difficult to preview large models and prefabs. | ||||
| Additional Information | This has occurred for the following users: - myself on an RX 460 - bikerdude on an RX 570 - aluminumhaste, don't know what his AMD card is - jonri on Vega 8 (Linux) | ||||
| Tags | No tags attached. | ||||
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Aluminumhaste is seeing the same rendering issues on his AMD setup: https://forums.thedarkmod.com/index.php?/topic/21638-darkradiant-350-released/&do=findComment&comment=479999 |
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Camera view of the merchant ship deck 2 prefabs ( prefabs > nautical > ship_merchant > interior_deck2.pfbx) with far clip plane disabled. |
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Camera view of the merchant ship deck 2 prefabs, this time with far clip plane enabled (and zoomed in closer) |
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Reworked this ticket as it affects all camera renders, not just the prefab chooser. |
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Model chooser view of galleon_hull_open - note how you can only see thin slivers of the bullseye windows and cannon hatches along the hull, even at this close-up. |
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I'm out of machines with AMD cards here. I'd like to, but I cannot even attempt to debug this until the situation changes. AluminumHaste seems to have found that this has been introduced in some driver version, so maybe there's a compatibility setting somewhere that might work around this problem? |
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Do you mean AluminumHaste's post a little higher up in that thread relating to the outlines? I don't think that post was related to this rendering bug. But in any case worth looking for compatibility settings. A further workaround would be to make sure that the setting for enabling far-clip plane affects not just the camera view, but also all chooser views. It's confusing anyway when you try to preview something that's so large that the initial zoom level is beyond the far clip plane. I'd be glad to assist by compiling from source and running debugging tools, I've already done that a fair amount myself for TDM development. |
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Add AMD Vega 8 on Linux to the list of affected cards. I have AMD in my laptop and my desktop, so I'd be willing to try to look into this. I'm away this week but could dig into it next week. |
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At this point any help or insight is appreciated! |
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Trying DR 3.6 - which I believe should have far clip disabled in the Prefab Chooser view - the issue seems unimproved. |
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Does not reproduce for me on Vega 56 using the amdgpu driver on Ubuntu 22.04. I think we need more information about the environments this is happening on, e.g. - Which driver (amdgpu, radeonsi, fglrx). - Which distro and version. - Which specific graphics card. - Which desktop environment and windowing system (GNOME or KDE, Xorg or Wayland). |
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I've managed to make the problem go away by changing the depth buffer from 16-bit to 24-bit. Specifically, find WX_GL_DEPTH_SIZE at the top of GLWidget.cpp and change the 16 to 24. This feels like a band-aid over the actual problem, and I'm not sure if changing this setting would affect performance or compatibility. |
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My current system: - OS: Win11 with latest updates - Dedicated GPU: AMD RX 7600S - Integrated GPU: AMD Radeon 780M on an AMD Rzyen 9 7940hs CPU - Driver: Adrenalin 24.1.1 (most recent version at this time) - Not sure what to say about the desktop environment. Whatever comes stock with Win11? Also happened on my previous system: - Win10 64 bit - AMD RX 460 with whatever was the latest Adrenalin driver made for this card |
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I've never even heard of a depth buffer being less than 24 bits, so if that fixes the issue I'm happy to change it. It would certainly make sense that the limited precision of 16 bit buffer would cause issues. |
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Depth buffer set to 24 bits in df2f7a96e117931dc922032b0270a8b62e1002b6 as suggested in the comments by jonri. Since I have not seen this issue on my system (despite having an AMD card on Linux), someone else will need to confirm the fix. |
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Using DR 3.9, this looks a lot better now. For example, the house 8 prefab now looks like this in the prefab preview (compare to the original version I screenshotted in the comments). Regular camera view with far clip plane enabled also looks considerably better. In some cases you can still see some caulk bleeding through along the edges, but it's a lot better now. |
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Seems to be resolved. |
