Dynamic Array of a fixed sized Matrix about enoki

[Speierers]

What will be the use of this Mat22Buffer type?

To perform operations on an "array" of matrices, what you want is:

using MyMat22 = enoki::Matrix<enoki::DynamicArray<enoki::Packet<float, PACKET_WIDTH>>, 2>;

here using a Structure of Arrays (SoA) instead of an Array of Structures (AoS).

[chkone]

This is from a code generation.
From "Basic type" & enoki types {int32_t, int64_t, float, enoki::Array<float, 2>, enoki::Array<float, 3>, ..., } based on the context I generate a dynamic version of it.
Like

template < typename Type >
constexpr size_t PacketSize = enoki::max_packet_size/sizeof( Type );

Generated:
using TypeBuffer = enoki::DynamicArray<enoki::Packet<Type, PacketSize< Type > == 0 ? 1 : PacketSize< Type > >;

My understanding was, that will be flatten internally and keeping the type for operation during the unroll of the template expression (for example multiplication).
I will rewrite the code-gen if it's "as design".