In this tutorial, I will show you how to add damage to your props using the Real Damage add-on in Blender for your project.
Modeling
This tutorial assumes you know the basics of working in Blender
You can quickly make a damaged pillar using a free add-on
You can use the default Cube to make a simple pillar
Once you have the pillar modeled, rename the Object – indicating it is the low-poly version
Apply the transforms
In the UV Editing Workspace, UV unwrap the pillar
Duplicate the pillar and rename it to high-poly
Hide the low-poly pillar and select the high-poly pillar
Pillar Damage
You can use the free version of Real Damage for this tutorial
Once it is downloaded, install it and activate it
Open the Properties Panel and select the Real Damage tab
Select the high-poly pillar and select Add Damage
Reselect the high-poly pillar and made adjustment to the options
Apply the Modifier once you are happy with the damage
Baking Normal Map
Duplicate the low-poly pillar and rename it to cage
Scale this cage so it completely covers the high-poly pillar
In the Shading Workspace, add an Image Texture node and made a new Image
With the Image Texture node selected, change to the Cycles Render Engine
Select the low-poly pillar and SHIFT-select the high-poly pillar
Under the Bake Panel, change the Bake Type to Normal
Activate Selected to Active
Activate the Cage option and increase the Max Ray Distance to 0.1
Then click on Bake
Save the Normal Map
Add a Bump node and connect the Image Texture node to the Height of the Bump Map and the Bump Map to the Normal of the Principled Shader
You can also invert the Bump Node
Using the Node Wrangler add-on, apply your material