added model import via tinyobj
added loading of sponza (not contained in repo, see casual-effects.com)
fixed large parts of the camera movement, especially via mouse
added model class which can contain arbitrarily many meshes. renderer now keeps list of models rather than meshes.
added model import via tinyobj added loading of sponza (not contained in repo, see casual-effects.com) fixed large parts of the camera movement, especially via mouse added model class which can contain arbitrarily many meshes. renderer now keeps list of models rather than meshes.