Vulkan error, vk::PhysicalDevice::createDeviceUnique: ErrorFeatureNotPresent

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jprofesorek wrote:

To switch do DX11, the production_Config.ini must not only have the renderer set, but it must have it set in the DISPLAY section.
So if your file is empty, you have to put the following text to get it working:

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[DISPLAY]
renderer_type=DirectX11

I learned this the hard way when trying to launch a fresh install.

The reason for this 'Vulkan error, vk::PhysicalDevice::createDeviceUnique: ErrorFeatureNotPresent' problem is that the system vulkan implementation is missing some "features" that are requested by PoE.

In vulkan, a device supports and advertises a subset of predefined features.
The application, upon initializing vulkan, has to specify which features it uses.
If the application requests a feature that is not supported by the system (software or hardware), then the 'vkCreateDevice' returns 'VK_ERROR_FEATURE_NOT_PRESENT'. This gets translated to the error we all see.

So, basically PoE requests some feature that is not available in the implementation of vulkan, at least for my integrated intel card (with mesa 23.1.8)
I'm afraid this may affect all Intel integrated graphics cards.

One can learn which features are supported by running the vulkaninfo command (no arguments required).
Results for my system are over there: https://pastebin.com/Y3De65e2.
Maybe someone with access to the source code can point which feature is required by PoE and missing in that output...