Most of the 3d models on the internet do not contain the textures of the model in a single image but separately and in the engine only a single texture is allowed that is applied to all parts of the 3d model.
So does someone recommend me a program to map the textures of a model (Fbx) similar to blender to export it to (obj) and thus import it to the engine in a single texture?
It would save me the whole process since cyberix3d is not compatible with Fbx.