DXVK compatibility issue on some integrated GPUs (Intel Iris Xe / Mesa)

[secvim]

Some integrated GPUs may fail to launch FxpGunZ due to DXVK Vulkan feature compatibility

Description

Some integrated GPUs may fail to launch FxpGunZ because the DXVK version used by Proton requires the Vulkan feature VK_KHR_load_store_op_none.

The GPU may support Vulkan 1.3/1.4 but still lack this optional Vulkan feature.

Example

• GPU: Intel Iris Xe (Tiger Lake)
• Driver: Intel open-source Mesa driver
• Mesa: 25.2.8
• Vulkan: 1.4 supported
• VK_KHR_load_store_op_none extension exposed, but the required feature is unavailable

Error

info:  Found device: Intel(R) Iris(R) Xe Graphics (TGL GT2) (Intel open-source Mesa driver 25.2.8)
info:    Skipping: Device does not support required feature 'khrLoadStoreOpNone' (extension: VK_KHR_load_store_op_none)
info:  Found device: llvmpipe (LLVM 20.1.2, 256 bits) (llvmpipe 25.2.8)
info:    Skipping: Device does not support required feature 'khrLoadStoreOpNone' (extension: VK_KHR_load_store_op_none)

warn:  DXVK: No adapters found. Please check your device filter settings
warn:  and Vulkan drivers. A Vulkan 1.3 capable setup is required.

terminate called after throwing an instance of 'dxvk::DxvkError'
0110:err:mscoree:expect_no_runtimes Process exited with a Mono runtime loaded.