are we sure this isn't a driver bug? nvm, just saw the Discord discussion.
Can you try launching the game with RADV_DEBUG=nodcc %command% set as your launch options?
Can you try launching the game with
RADV_DEBUG=nodcc %command%set as your launch options?
Reposting from the Discord to maintain consistency:
Seems to run fine with the launch argument.

Did you say Discord discussion? Can you post a link to the server?
VKx discord server, there's a dx9 channel: https://discord.gg/mjWm8DK
Try using LLVM shader compiler. There is a bug with ACO with GTA5 and perhaps this is similar for GTA4?
RADV_DEBUG=llvm GTA4EXE
RADV_DEBUG=nodcc fixed the glitches for me in proton with a 5700xt thankyou
Any fix on this on Windows?
Nope
Should be fixed on master with latest mesa-git as well.
VK_EXT_attachment_feedback_loop_layout is simply not available in any driver made by amd.
It's available in mesa radv 22.2 which is the amd driver primarily supported by dxvk
contributiive effort, is not made by
Technically i don't think amd contributes to radv 👀
Anyway. I'm not sure I understand your point. Aren't you commenting in this old issue because you have the problem? 🤔
Mainly to point out that AMD's own drivers don't have the extension so the issue remains, so thats the reason for no fix for Windows users.
People are using this to make GTA4 perform better on Windows, so Radeon owners luck out or have to use 1.7.3.
DXVK is built for Linux.
You should complain to AMD and tell them to implement the extension.
You can go complain here:
https://github.com/GPUOpen-Drivers/AMDVLK/issues/303
AMD states support of VK_EXT_attachment_feedback_loop_layout as of Adrenalin Edition 23.2.1 - January 24th, 2023
https://www.amd.com/en/support/kb/release-notes/rn-rad-win-vulkan
I'm pretty sure that is for Windows drivers. MESA-RADV/AMDVLK could be behind.
@jarrard RADV has supported this for ages.
amdvlk should also include it with their 2023Q1.1 release.
i have this problem, but im on intel, what would be the solution in this case?
If you mean Intel Linux then you likely need to wait until this has been merged https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/17892
Can you try launching the game with
RADV_DEBUG=nodcc %command%set as your launch options?
I had the same problem on Debian 12 with a Radeon RX 7600 and adding that launch option fixed it for me too.
I installed the game via Lutris (0.5.12) and in "Configure" section of GTA IV > "System options > "Environment variables" I added a new variable with RADV_DEBUG as the key and nodcc %command% as the value.
@Ciro23 Make sure your Vulkan driver is not ancient.
@Ciro23 Make sure your Vulkan driver is not ancient.
I'm aware of Debian slow rolling policy and currently I'm fine with it. All the games I play right now works fine as they did on Pop_OS, until it decided to completely destroy it self from a day to another.
RADV_DEBUG=nodccx4 2024-10RADV_DEBUGx1 2024-10RADV_DEBUG=llvmx1 2021-02RADV_DEBUG=nodcc %command%x3 2024-10
I'm having some heavy rendering issues with Grand Theft Auto IV: Complete Edition on Steam, running on a Radeon RX 6800 XT, the visible rendered part is also very blurry.
Software information
Grand Theft Auto IV: Complete Edition, settings cranked to the max possible, 1440p @ 60 or 165fps.
System information