mtl

type Material struct {
	Diffuse       [3]float32
	Ambient       [3]float32
	Specular      [3]float32
	Emissive      [3]float32
	SpecularPower float32
	Refraction    float32 // IOR Ni
	// Metallic   float32
	Alpha       float32
	RenderMode  uint32
	MapDiffuse  string
	MapSpecular string
	MapBump     string
	MapAlpha    string
}