Add format_type for combined depth/stencil

Author: serenity4

src/formats.jl

@@ -103,6 +103,8 @@ format_type(::Val{x}) where {x} = error("No type is known which corresponds to f
 Vk.format_type(::Val{Vk.FORMAT_D32_SFLOAT}) = Float32
 Vk.format_type(::Val{Vk.FORMAT_D16_UNORM}) = UInt16
 Vk.format_type(::Val{Vk.FORMAT_S8_UINT}) = UInt8
+Vk.format_type(::Val{Vk.FORMAT_D32_SFLOAT_S8_UINT}) = Tuple{Float32,UInt8}
+Vk.format_type(::Val{Vk.FORMAT_D16_UNORM_S8_UINT}) = Tuple{UInt16, UInt8}
 
 # generated by `ext/generate_formats.jl`.