INT: texture now use mipmaps + anisotropic filtering
INT: preparing for normal mapping
INT= increased the specular reflection
INT: added normal and tangent computation in mesh.cpp (although it appears it's in fact the bitangent?!!)
INT: normals are computed based on the TBN matrix :)
INT: bump mapping is almost working (it does not work on the smooth sphere yet)
INT: preparing for render to texture
INT: texture handle are now created in the constructr, added possibility to create texture from color
INT: added the possibility to specify the filter in Textures
INT: simplified the Handle class so that it's always GLuint
INT: first draft of the FrameBuffer thing
INT: got render to texture working :-)
INT: now rendering to multiple texture color, position, uv and normal
==> deferred shading: here I come :-)