c++ - Assigning texture to an object using multiple textures -

i'm making object loader, , texture parts in different texture files. best solution of having mapped on model? need treat every part has it's own texture 1 model, final body has many separate drawing calls 1 texture each?

with advent of programmable rendering pipeline (i.e.: shaders) can apply , combine multiple textures meshes without need multiple draw calls.

modern gpus have several texture units (glactivetexture) , shaders can read may units @ time. model on right showed in picture, example, uses variation of phong lighting model diffuse texture, normal map texture , specular map texture highlights. these 3 textures applied each texture unit , whole model rendered in 1 draw call. fragment shader reads textures , combines them produce final image.

your question not specific, can now. if have more specific questions, please fell free ask.