Wire3D (Wii Independent Rendering Engine 3D) is an open source, object oriented, multiplatform 3D engine written in C++, supporting homebrew Wii and Windows (DirectX). It provides a framework to developers for writing platform agnostic 3D applications (including physics using the Bullet Physics library) that run on Wii and Windows out of the box.

Wire3D: Demo
Watch this video on YouTube.

Changes:

Wire
* debug build uses custom operator new/delete
* unified handling of platform dependent index buffers
* fixed ResetDevice issue when D3DPOOL_DEFAULT objects are used
Importer
* turned importer into lib
* handle render states that are defined per material (additionally to per node/leaf defined render states)
* handle vertex and index buffer access usage types
* keep record of number of imported materials, textures, nodes, geometries, vertex buffers, index buffers
* fixed memory leak
Tools
* added Bullet Physics lib to solution for wii and win
* added Unity3D exporter
* fixed 3rd party lib gcc warnings

http://wiibrew.org/wiki/Wire3D