Forum Discussion
Updated to v53, and Vulkan RHI is crashing my app
Hi all, I encountered a problem with my UE5 project after the v53 update on my Quest Pro. When I try to open it through Unknown Source, it will give me the 3 dots and then crash to home.
This is the error I get from the Log:
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20:15:59.270 25173 25271 D UE : Assertion failed: false [File:D:/build/++UE5/Sync/Engine/Source/Runtime/VulkanRHI/Private/Android/../VulkanRHIPrivate.h] [Line: 906]
20:15:59.270 25173 25271 D UE : A texture was marked as a shading rate source but attachment VRS is not supported on this device. Ensure GRHISupportsAttachmentVariableRateShading and GRHIAttachmentVariableRateShadingEnabled are true before specifying a shading rate attachment.
20:15:59.270 25173 25271 D UE : [2023.05.20-00.15.59:270][ 0]Assertion failed: false [File:D:/build/++UE5/Sync/Engine/Source/Runtime/VulkanRHI/Private/Android/../VulkanRHIPrivate.h] [Line: 906]
20:15:59.270 25173 25271 D UE : A texture was marked as a shading rate source but attachment VRS is not supported on this device. Ensure GRHISupportsAttachmentVariableRateShading and GRHIAttachmentVariableRateShadingEnabled are true before specifying a shading rate attachment.
20:15:59.270 25173 25271 D UE : [2023.05.20-00.15.59:270][ 0]LogAndroid: Error: === Critical error: ===
20:15:59.270 25173 25271 D UE : [2023.05.20-00.15.59:270][ 0]LogAndroid: Error:
20:15:59.270 25173 25271 D UE : [2023.05.20-00.15.59:270][ 0]LogAndroid: Error: Assertion failed: false [File:D:/build/++UE5/Sync/Engine/Source/Runtime/VulkanRHI/Private/Android/../VulkanRHIPrivate.h] [Line: 906]
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This same UE5 project work on my Quest 2 with v47 (thank god for my Q2 despite being relegated to the shelf). The Vulkan RHI error does not come up.
I know for certain it's Vulkan because when I disable Vulkan in the Project Settings, my project will run on the Quest Pro, but there is no visuals except for audio. Controllers seems to work despite not seeing anything as I can grab my objects because of the sound cue.
Anyone having problems similar to mine? If so, how have you fixed it? Any Meta folks here can advice on a fix?
Thank you very much.
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For anyone in the future having the same problem, I have fixed the issue:
I had to turn off both Mobile Multi-View and Vulkan.
Turning off mobile multi-view caused the whole project to recompile the shaders, however. Also, FPS is at the red (50-60 fps). When it was working, Vulkan being on kept it at 72fps.
I need a solution where Vulkan is on, or have the FPS at 72 without Vulkan.
I will give this a try, thanks!
After updating to version 53 on your Quest Pro, you encountered an error in your UE5 project when trying to open it through Unknown Source. The error message indicates an issue with Vulkan RHI (Rendering Hardware Interface). The error suggests that a texture was marked as a shading rate source, but the device does not support the specified shading rate attachment. Disabling Vulkan in the Project Settings allows the project to run on the Quest Pro, but without visuals. The controllers still work, but there is no visual output except for audio. You're seeking advice or a fix for this issue, especially from Meta (formerly known as Facebook) representatives.
