USING VIEWPORT CANVAS IN 3ds MAX
Viewport Canvas provides tools for painting color and patterns onto any bitmap in an object’s material in the viewport. You can paint in multiple layers directly onto a 3D object, or on a 2D canvas superimposed on the viewport. Viewport Canvas can export the painting in PSD format so you can modify it in Adobe Photoshop or a compatible program, and then save the file and update the texture in 3ds Max.