Rendering is the process whereby a high quality image of a 3d model is produced, with the customizable use of lighting, reflection and texture effects.

Rendering cannot be carried out in the Trainz Asset Creation Studio in Gmax, but is available in 3DS Max. In relation to Trainz, its main uses are to check the resemblance of a model to a photo of the real thing. Renders are also a popular way of exhibiting content creations for example, on the Trainz Discussion Forums.