Tangerine

	A small OpenGL 3+ renderer and game engine
	NOTE: This is still a work in progress

Features:
	vertices
	pixels

TODO:
	finish node animations from assimp
	add input abstraction for SDL
	store meshes separately from entities for reuse
	add a function to update camera transforms only once per frame, per shader

Dependencies:
	assimp >= 5.0.0
	glew
	glm
	SDL2
	stb_image

Build Instructions:
	install dependencies:
		Arch)
			$ sudo pacman -S assimp glew glm sd2 catch2 gcc make
		Fedora)
			NOTE: Fedora (33) ships with assimp v3.3.1 which doesn't support
				glTF2: https://en.wikipedia.org/wiki/GlTF
			$ sudo dnf install glew-devel glm-devel catch-devel SDL2-devel \
				gcc-c++ make cmake
	checkout, and initialize submodules: (stb_image)
		$ git submodule init
		$ git submodule update
	(optional) checkout large files for running examples:
		(NOTE: https://git-lfs.github.com/)
		$ git lfs pull
	build:
		$ make

		NOTE: if build fails with errors from assimp or mesh.cpp, you can build
			a recent version of assimp first. Requires cmake

			$ make build_assimp && USE_INTERNAL_ASSIMP=y make

			to run examples without installing assimp as a system library:

			$ cd examples/bin
			$ LD_LIBRARY_PATH=../../ext/assimp/lib ./assimp_loading