Re: [PATCH v4 0/1] MR523: vkd3d: Use mutable descriptors if available.

[Giovanni Mascellani (＠giomasce)]

Giovanni Mascellani (@giomasce) commented about libs/vkd3d/device.c:
>  VK_EXTENSION(EXT_DEBUG_MARKER, EXT_debug_marker),
>  VK_EXTENSION(EXT_DEPTH_CLIP_ENABLE, EXT_depth_clip_enable),
>  VK_EXTENSION(EXT_DESCRIPTOR_INDEXING, EXT_descriptor_indexing),
> - VK_EXTENSION(EXT_MUTABLE_DESCRIPTOR_TYPE, EXT_mutable_descriptor_type),

Enabling the extension is not enough. You also have to check and enable `VkPhysicalDeviceMutableDescriptorTypeFeaturesEXT::mutableDescriptorType`. More in general, the Vulkan validation layer seems to have a few comments about your implementation (eventually we should probably consider enabling the validation layers in the CI).