# \#vulkan **URL:** https://forums.unrealengine.com/tag/vulkan/9944.md [Latest](https://forums.unrealengine.com/latest.md) · [Categories](https://forums.unrealengine.com/categories.md) · [Tags](https://forums.unrealengine.com/tags.md) --- ## [Linux (Vulkan / RADV): Viewport flickering, black missing meshes & "outdated swapchain" spam (RX 6600) ](https://forums.unrealengine.com/t/linux-vulkan-radv-viewport-flickering-black-missing-meshes-outdated-swapchain-spam-rx-6600/2768701)
**Author:** [@Skickpause](https://forums.unrealengine.com/u/Skickpause)\ **Replies:** 1\ **Last updated:** [September 19, 2026, 12:34pm UTC](https://forums.unrealengine.com/t/linux-vulkan-radv-viewport-flickering-black-missing-meshes-outdated-swapchain-spam-rx-6600/2768701 "2026-09-19T12:34:10Z")
Hi everyone, I’m relatively new to Unreal Engine and currently learning the ropes on Linux. I’ve hit a roadblock with a severe viewport rendering issue where meshes turn pitch black, disappear, or flicker when looking … --- ## [Finally, a solution to Android Vulkan video performance (360, 8k, Quest 3 etc)!](https://forums.unrealengine.com/t/finally-a-solution-to-android-vulkan-video-performance-360-8k-quest-3-etc/1918385)
**Author:** [@joe\_marshall\_vr](https://forums.unrealengine.com/u/joe_marshall_vr)\ **Replies:** 14\ **Last updated:** [September 16, 2026, 6:31pm UTC](https://forums.unrealengine.com/t/finally-a-solution-to-android-vulkan-video-performance-360-8k-quest-3-etc/1918385 "2026-09-16T18:31:10Z")
So, I was asked to investigate really poor performance of 360 video for a customer who recently upgraded their code to UE5.3. On Oculus Quest their video playback went from smooth, to 12 FPS. What I discovered was really… --- ## [Editor hangs forever in Linux upon opening modal dialogs, with a message about Vulkan swapchains being outdated.](https://forums.unrealengine.com/t/editor-hangs-forever-in-linux-upon-opening-modal-dialogs-with-a-message-about-vulkan-swapchains-being-outdated/2730532)
**Author:** [@NMitchell2026](https://forums.unrealengine.com/u/NMitchell2026)\ **Replies:** 5\ **Last updated:** [July 29, 2026, 10:19am UTC](https://forums.unrealengine.com/t/editor-hangs-forever-in-linux-upon-opening-modal-dialogs-with-a-message-about-vulkan-swapchains-being-outdated/2730532 "2026-07-29T10:19:26Z")
Summary UnrealEditor becomes unresponsive, though not completely crashed or locked as certain messages still appear periodically in the logs, when opening modal dialogs within the editor on Linux. Once this state is reac… --- ## [Android Vulkan Video Player (180, 360, 8K, HLS & DASH video on Quest, Pico etc)!](https://forums.unrealengine.com/t/android-vulkan-video-player-180-360-8k-hls-dash-video-on-quest-pico-etc/2720591)
**Author:** [@HISPlayerUnreal](https://forums.unrealengine.com/u/HISPlayerUnreal)\ **Replies:** 0\ **Last updated:** [May 7, 2026, 12:26pm UTC](https://forums.unrealengine.com/t/android-vulkan-video-player-180-360-8k-hls-dash-video-on-quest-pico-etc/2720591 "2026-05-07T12:26:47Z")
HISPlayer Android Vulkan SDK is the most advanced high-performance GPU-accelerated video player for Unreal Engine. It enables powerful, smooth playback of high-quality 180, 360 stereoscopic video in 4K, 8K resolution on … --- ## [HISPlayer - HTTP Live Streaming (HLS) and MPEG-DASH video streaming plugin for Unreal Engine Games and VR/AR apps.](https://forums.unrealengine.com/t/hisplayer-http-live-streaming-hls-and-mpeg-dash-video-streaming-plugin-for-unreal-engine-games-and-vr-ar-apps/1135877)
**Author:** [@HISPlayerUnreal](https://forums.unrealengine.com/u/HISPlayerUnreal)\ **Replies:** 6\ **Last updated:** [April 20, 2026, 3:02pm UTC](https://forums.unrealengine.com/t/hisplayer-http-live-streaming-hls-and-mpeg-dash-video-streaming-plugin-for-unreal-engine-games-and-vr-ar-apps/1135877 "2026-04-20T15:02:44Z")
The most advanced cross-platform Unreal Engine Media Player :rocket: FREE UNREAL ENGINE MEDIA PLAYER Links: Website | Documentation | Video Hosting HISPlayer is the premium multi-platform video streaming playe… --- ## [Video Player for Android, Windows, iOS, and Mac](https://forums.unrealengine.com/t/video-player-for-android-windows-ios-and-mac/2704147)
**Author:** [@HISPlayerUnreal](https://forums.unrealengine.com/u/HISPlayerUnreal)\ **Replies:** 4\ **Last updated:** [April 20, 2026, 2:59pm UTC](https://forums.unrealengine.com/t/video-player-for-android-windows-ios-and-mac/2704147 "2026-04-20T14:59:47Z")
Unreal Media Player Plugin for advanced video playback inside Unreal projects. Links: Website | Documentation | Support | Forum :rocket: FREE UNREAL ENGINE VIDEO PLAYER This Unreal Video Player can play only HLS & D… --- ## [VULKAN FAILURE TO METAHUMAN](https://forums.unrealengine.com/t/vulkan-failure-to-metahuman/1766167)
**Author:** [@MetaverArchitect](https://forums.unrealengine.com/u/MetaverArchitect)\ **Replies:** 4\ **Last updated:** [February 28, 2026, 3:39pm UTC](https://forums.unrealengine.com/t/vulkan-failure-to-metahuman/1766167 "2026-02-28T15:39:43Z")
MetaHumanMeshTracker: Error: (VulkanDevice.cpp, l120): failed to find GPUs with Vulkan support MetaHumanMeshTracker: Error: (FaceTrackingAPI.cpp, l156): failure to initialize: Critical error (VulkanDevice.cpp, l120): fai… --- ## [Unreal build for GDX Spark failing](https://forums.unrealengine.com/t/unreal-build-for-gdx-spark-failing/2700717)
**Author:** [@Gabriel\_UMe](https://forums.unrealengine.com/u/Gabriel_UMe)\ **Replies:** 1\ **Last updated:** [February 20, 2026, 12:21am UTC](https://forums.unrealengine.com/t/unreal-build-for-gdx-spark-failing/2700717 "2026-02-20T00:21:54Z")
My goal is to cross-compile a project to run on a GDX Spark. I am using Unreal 5.6.1 on Windows 11 to package the project. The project is the Vehicle example games project, with no changes. When the packaged build is … --- ## [Overlay Materials not working on Android / Quest 3 with Unreal 5.5 and 5.6 ](https://forums.unrealengine.com/t/overlay-materials-not-working-on-android-quest-3-with-unreal-5-5-and-5-6/2678572)
**Author:** [@rickyviking](https://forums.unrealengine.com/u/rickyviking)\ **Replies:** 0\ **Last updated:** [November 25, 2025, 2:09pm UTC](https://forums.unrealengine.com/t/overlay-materials-not-working-on-android-quest-3-with-unreal-5-5-and-5-6/2678572 "2025-11-25T14:09:42Z")
Hi there, I have a project which uses some basic overlay materials on actors, in forward rendering. Everything works fine on desktop and on VR preview from editor. The packaged apk version installed on a Meta Quest 3 do… --- ## [How to toggle between DX10, DX11, DX12 and via Blueprint?](https://forums.unrealengine.com/t/how-to-toggle-between-dx10-dx11-dx12-and-via-blueprint/408364)
**Author:** [@charles\_interface](https://forums.unrealengine.com/u/charles_interface)\ **Replies:** 17\ **Last updated:** [November 6, 2025, 4:01pm UTC](https://forums.unrealengine.com/t/how-to-toggle-between-dx10-dx11-dx12-and-via-blueprint/408364 "2025-11-06T16:01:49Z")
Hey guys, any idea how to toggle between Dx11, DX12 and DX10, and maybe ? via Blueprint --- ## [Android Vulkan Reflection Error - Objects appear solid white](https://forums.unrealengine.com/t/android-vulkan-reflection-error-objects-appear-solid-white/2531634)
**Author:** [@Viking\_VR\_Team](https://forums.unrealengine.com/u/Viking_VR_Team)\ **Replies:** 1\ **Last updated:** [September 16, 2025, 2:56pm UTC](https://forums.unrealengine.com/t/android-vulkan-reflection-error-objects-appear-solid-white/2531634 "2025-09-16T14:56:42Z")
We have been experiencing a lighting error in Android Vulkan. The following screenshot is taken from the android Vulcan preview. (It is replicated when packaging as well) As you can see some objects have turned solid… --- ## [Visual screen bugs with Android Vulkan SM5](https://forums.unrealengine.com/t/visual-screen-bugs-with-android-vulkan-sm5/487138)
**Author:** [@spencer-pnt](https://forums.unrealengine.com/u/spencer-pnt)\ **Replies:** 7\ **Last updated:** [August 18, 2025, 9:20am UTC](https://forums.unrealengine.com/t/visual-screen-bugs-with-android-vulkan-sm5/487138 "2025-08-18T09:20:52Z")
Hello! I’m working on a mobile game targeting Android in UE 4.26.2, with forward rendering enabled, Vulkan graphics API enabled, and Vulkan SM5 desktop rendering \[Experimental\] enabled. I’m experiencing two types of vi… --- ## [How could I know which RHI is performing on the currently running device](https://forums.unrealengine.com/t/how-could-i-know-which-rhi-is-performing-on-the-currently-running-device/424599)
**Author:** [@YoungJun\_Eom](https://forums.unrealengine.com/u/YoungJun_Eom)\ **Replies:** 2\ **Last updated:** [July 29, 2025, 12:06am UTC](https://forums.unrealengine.com/t/how-could-i-know-which-rhi-is-performing-on-the-currently-running-device/424599 "2025-07-29T00:06:11Z")
some of devices doesn’t support Vulkan. if then UE4 automatically selects RHI as OpenGL ES. and in that case, I couldn’t know my app running on OpenGL ES or Vulkan So, is there proper way or correct way of getting cur… --- ## [The Processing Pipeline failed with an error when I hit the process button in MetaHumanPerformance ](https://forums.unrealengine.com/t/the-processing-pipeline-failed-with-an-error-when-i-hit-the-process-button-in-metahumanperformance/2620500)
**Author:** [@rek1awn3B](https://forums.unrealengine.com/u/rek1awn3B)\ **Replies:** 0\ **Last updated:** [July 27, 2025, 9:16pm UTC](https://forums.unrealengine.com/t/the-processing-pipeline-failed-with-an-error-when-i-hit-the-process-button-in-metahumanperformance/2620500 "2025-07-27T21:16:41Z")
Hello, After I completed the MetaHuman identity, I created the Metahuman Performance and uploaded my recording and set my Metahuman identity. I’m getting an error when I hit the process button in the Metahuman Performan… --- ## ["Failed to load Vulkan driver" when I start UE4Editor](https://forums.unrealengine.com/t/failed-to-load-vulkan-driver-when-i-start-ue4editor/464168)
**Author:** [@anonymous\_user\_453bcf4b](https://forums.unrealengine.com/u/anonymous_user_453bcf4b)\ **Replies:** 3\ **Last updated:** [July 26, 2025, 1:22pm UTC](https://forums.unrealengine.com/t/failed-to-load-vulkan-driver-when-i-start-ue4editor/464168 "2025-07-26T13:22:29Z")
“Failed to load Vulkan driver which is required to run the engine. the engine no longer fallbacks to OpenGL4 which has been deprecated” when I start UE4Editor in the Ubuntu 16.04 --- ## [Failed to allocate Device Memory leads to Fatal Error](https://forums.unrealengine.com/t/failed-to-allocate-device-memory-leads-to-fatal-error/2571494)
**Author:** [@pedroo-14041](https://forums.unrealengine.com/u/pedroo-14041)\ **Replies:** 8\ **Last updated:** [June 25, 2025, 6:16am UTC](https://forums.unrealengine.com/t/failed-to-allocate-device-memory-leads-to-fatal-error/2571494 "2025-06-25T06:16:02Z")
Hi everyone, I am working on a project in Ubuntu. And it has happened quite a few times already that the editor crashes and this is the last part of the log data: \[2025.06.23-01.14.17:544\]\[ 0\]LogVulkanRHI: Warning: Fa… --- ## [What does the Vulkanmemory stat group represent in a uestats recording?](https://forums.unrealengine.com/t/what-does-the-vulkanmemory-stat-group-represent-in-a-uestats-recording/2573919)
**Author:** [@Xrenyn\_the\_Mage](https://forums.unrealengine.com/u/Xrenyn_the_Mage)\ **Replies:** 0\ **Last updated:** [June 24, 2025, 4:15pm UTC](https://forums.unrealengine.com/t/what-does-the-vulkanmemory-stat-group-represent-in-a-uestats-recording/2573919 "2025-06-24T16:15:21Z")
I’m trying to figure out exactly how much VRAM my game requires and I found a promising looking tool in the Unreal Engine that I think might give me some valuable insights: Using the stat startfile and stat stopfile cons… --- ## [The appearance of noise on the screen and a bug in the android game when using the Vulkan API ](https://forums.unrealengine.com/t/the-appearance-of-noise-on-the-screen-and-a-bug-in-the-android-game-when-using-the-vulkan-api/2477051)
**Author:** [@Satana\_Exist](https://forums.unrealengine.com/u/Satana_Exist)\ **Replies:** 0\ **Last updated:** [April 26, 2025, 1:45pm UTC](https://forums.unrealengine.com/t/the-appearance-of-noise-on-the-screen-and-a-bug-in-the-android-game-when-using-the-vulkan-api/2477051 "2025-04-26T13:45:27Z")
Good day to all! I would really appreciate it if someone could help with the problem. I am developing a game on Unreal for android using the Vulkan API and have encountered bugs. I would like to say right away that ther… --- ## [Can't open a particle system in Vulkan RHI](https://forums.unrealengine.com/t/cant-open-a-particle-system-in-vulkan-rhi/2434564)
**Author:** [@Nechalon](https://forums.unrealengine.com/u/Nechalon)\ **Replies:** 0\ **Last updated:** [April 1, 2025, 2:10pm UTC](https://forums.unrealengine.com/t/cant-open-a-particle-system-in-vulkan-rhi/2434564 "2025-04-01T14:10:41Z")
When trying to open up the cascade Particle System Editor in Vulkan RHI, it simply crashes in the following file: VulkanDescriptorSets.h template \ bool WriteTextureView(uint32 Descript… --- ## [\[BUG\] profileGPU not working on Linux](https://forums.unrealengine.com/t/bug-profilegpu-not-working-on-linux/2433679)
**Author:** [@mirthost](https://forums.unrealengine.com/u/mirthost)\ **Replies:** 0\ **Last updated:** [April 1, 2025, 4:03am UTC](https://forums.unrealengine.com/t/bug-profilegpu-not-working-on-linux/2433679 "2025-04-01T04:03:25Z")
profileGPU not working on Linux Unreal Engine Version: UE 5.5.4 (also tested on 5.4, same issue occurs) Issue Description: The profileGPU command in Unreal Engine on Linux does not display any valid data. The GPU Vi… --- ## [Assertion failed when create VR template on linux](https://forums.unrealengine.com/t/assertion-failed-when-create-vr-template-on-linux/2304156)
**Author:** [@PojiloyGolem4ik](https://forums.unrealengine.com/u/PojiloyGolem4ik)\ **Replies:** 6\ **Last updated:** [March 23, 2025, 9:11pm UTC](https://forums.unrealengine.com/t/assertion-failed-when-create-vr-template-on-linux/2304156 "2025-03-23T21:11:45Z")
Hello everyone, I worked with UE 5.4.0\\5.5.0 I get that crash when try to create or open VR template on many machines. It neither depends on GPU (Tried 7900XTX, RTX 3060, RTX A2000 ADA, RTX4000 ADA, AMD M780) with differ… --- ## [Why is dedicated allocation disabled in vulkan on android platform?](https://forums.unrealengine.com/t/why-is-dedicated-allocation-disabled-in-vulkan-on-android-platform/2318883)
**Author:** [@omigamedev](https://forums.unrealengine.com/u/omigamedev)\ **Replies:** 1\ **Last updated:** [February 7, 2025, 10:21am UTC](https://forums.unrealengine.com/t/why-is-dedicated-allocation-disabled-in-vulkan-on-android-platform/2318883 "2025-02-07T10:21:44Z")
Is there a reason why this is not an option but insted it’s eliminated from the code path using a preprocessor definition? I’d like to export a texture to be used as an external memory on Android devices that support the… --- ## [Android Materials: Feature Level Switch: Vulkan](https://forums.unrealengine.com/t/android-materials-feature-level-switch-vulkan/759341)
**Author:** [@RealAero](https://forums.unrealengine.com/u/RealAero)\ **Replies:** 1\ **Last updated:** [February 5, 2025, 3:00pm UTC](https://forums.unrealengine.com/t/android-materials-feature-level-switch-vulkan/759341 "2025-02-05T15:00:39Z")
Hello, I am wondering if we are using Vulkan with Feature Level Switch, do we use ES3\_1? My materials on Android are pure black and I am using Vulkan. I am curious if this has to do with Feature Level Switch not having … --- ## [UE5 game won't launch on Linux. Seems to be a Vulkan error?](https://forums.unrealengine.com/t/ue5-game-wont-launch-on-linux-seems-to-be-a-vulkan-error/1581188)
**Author:** [@Zman350x1](https://forums.unrealengine.com/u/Zman350x1)\ **Replies:** 2\ **Last updated:** [January 18, 2025, 8:46pm UTC](https://forums.unrealengine.com/t/ue5-game-wont-launch-on-linux-seems-to-be-a-vulkan-error/1581188 "2025-01-18T20:46:47Z")
A friend sent me a game to beta test on Linux. Unfortunately, it won’t launch. Running it in Wine (via Proton) opens a small Window that simply says Fatal Error with an OK box to close it, and that’s all (very descriptiv… --- ## [Vulkan API Issue in Unreal Engine Docker Containers – Pixel Streaming and Raytracing Support with Vulkan 1.3](https://forums.unrealengine.com/t/vulkan-api-issue-in-unreal-engine-docker-containers-pixel-streaming-and-raytracing-support-with-vulkan-1-3/2118897)
**Author:** [@leondefries](https://forums.unrealengine.com/u/leondefries)\ **Replies:** 1\ **Last updated:** [January 16, 2025, 11:39am UTC](https://forums.unrealengine.com/t/vulkan-api-issue-in-unreal-engine-docker-containers-pixel-streaming-and-raytracing-support-with-vulkan-1-3/2118897 "2025-01-16T11:39:47Z")
Hello everyone, I am facing an issue while using Unreal Engine within Docker containers, especially with Pixel Streaming and enabling Raytracing. It seems that the Vulkan 1.2 API is always loaded in the container, even … --- ## [Vulkan ray tracing pipelines are only supported in bindless.](https://forums.unrealengine.com/t/vulkan-ray-tracing-pipelines-are-only-supported-in-bindless/2188899)
**Author:** [@elwetritsche97](https://forums.unrealengine.com/u/elwetritsche97)\ **Replies:** 1\ **Last updated:** [December 10, 2024, 7:55am UTC](https://forums.unrealengine.com/t/vulkan-ray-tracing-pipelines-are-only-supported-in-bindless/2188899 "2024-12-10T07:55:34Z")
I am on Ubuntu 22.04 with Unreal 5.5 and nvidia 550 This describes the setup for Vulkan under Linux. I changed accordingly: Engine/Config/VulkanPC/DataDrivenPlatformInfo.ini Engine/Config/Linux/BaseLinuxEngine.ini T… --- ## [How to enable Raytracing on Linux/VulkanRHI?](https://forums.unrealengine.com/t/how-to-enable-raytracing-on-linux-vulkanrhi/475983)
**Author:** [@esfashion](https://forums.unrealengine.com/u/esfashion)\ **Replies:** 2\ **Last updated:** [November 28, 2024, 5:43pm UTC](https://forums.unrealengine.com/t/how-to-enable-raytracing-on-linux-vulkanrhi/475983 "2024-11-28T17:43:43Z")
(technically I am not using 4.26-preview but there is no simple 4.26 option) I have managed to configure an AWS CentOS7 instance with teradici to start UE4.26 Editor (compiled from scratch, nvidia drivers etc.). When I … --- ## [Has Anyone Found a Solution for Vulkan FPS Drop When Opening Media Source in VR?](https://forums.unrealengine.com/t/has-anyone-found-a-solution-for-vulkan-fps-drop-when-opening-media-source-in-vr/2084930)
**Author:** [@ND.D.Hip](https://forums.unrealengine.com/u/ND.D.Hip)\ **Replies:** 1\ **Last updated:** [October 24, 2024, 10:55am UTC](https://forums.unrealengine.com/t/has-anyone-found-a-solution-for-vulkan-fps-drop-when-opening-media-source-in-vr/2084930 "2024-10-24T10:55:43Z")
Hi everyone, I’ve come across this thread Significant Frame Rate Drop When Playing Video in UE5 with Vulkan Compared to OpenGL in UE4.27 and noticed that the issue discussed is exactly what I’m experiencing as well. Has… --- ## [Android device Camera flicker with Vulkan rendering](https://forums.unrealengine.com/t/android-device-camera-flicker-with-vulkan-rendering/2073980)
**Author:** [@D3valo](https://forums.unrealengine.com/u/D3valo)\ **Replies:** 1\ **Last updated:** [October 21, 2024, 5:46pm UTC](https://forums.unrealengine.com/t/android-device-camera-flicker-with-vulkan-rendering/2073980 "2024-10-21T17:46:18Z")
Hey all, I am using unreal engine 5.4.1 with Vulkan rendering, after I package my android build accessing the camera on the device, it causes flickering. It looks like it is trying to render horizontally and vertically … --- ## [Media playback with Vulkan laggy](https://forums.unrealengine.com/t/media-playback-with-vulkan-laggy/490646)
**Author:** [@anonymous\_user\_eff3f301](https://forums.unrealengine.com/u/anonymous_user_eff3f301)\ **Replies:** 3\ **Last updated:** [July 4, 2023, 1:37pm UTC](https://forums.unrealengine.com/t/media-playback-with-vulkan-laggy/490646 "2023-07-04T13:37:22Z")
Hi there, I am creating an app that will display 3D content and 360 video content for a business client. If I package the app with ES3.1 everything runs smoothly up to 8k material at 90fps and looks great… but if I pack… [Next page](https://forums.unrealengine.com/tag/vulkan/9944.md?match_all_tags=true&page=1&tags%5B%5D=vulkan)