Prepare the planned map first and save it on the desktop or in an easy-to-find folder.

Select the object you want to give, such as the wall, open the material editor in the toolbar, or press the m shortcut key to pop up the material editor panel;

Click the standard option, select VRay-Mtl under V-Ray in the pop-up material browser, and click OK to pop up the basic parameters related to V-Ray;

Click the box behind the diffuse reflection with the mouse, select the bitmap, confirm, and then find your original stored texture picture, and click Open;

Click the third toolbar, assign the material to the object, then turn on shading, and then turn on the uvw map in the modifier to adjust the parameters to a box. The following values can be modified by themselves until the effect is satisfactory;

Special case handling: if there is a gap in the middle of the picture made by everyone, it looks unsightly. This time it's a problem when intercepting pictures. When the picture is just imported, there will be an option to view the following picture. Click to view the picture and modify it yourself.