README.md

UnityMaterialExamples

Unity material examples created with texture images from

• https://cc0textures.com/
• https://freepbr.com/

Installation

Downloading

You can download materials and textures from Release tab. Download Resources.tar.xz file and extract it to your Unity project Asset directory.

Cloning project

1. Clone this repository with git and git-lfs: we use git-lfs for large files such as materials, meshes, texture images etc.

   $ git clone https://github.com/eastskykang/RaiSimUnity.git

2. Once you cloned source code, get lfs files by

   $ git lfs pull origin

   You should see texture JPEG files properly from Assets/Resources/texture/cc0/.

How to create Unity material from texture images?

Prerequisite

• Unity Editor
• Texture images
• Gimp or Photoshop (optional)

Steps

1. Download texture files from web sources.
2. Create a material from Unity Editor
   • If the material is transparent, set rendering mode to Transparent instead of Opaque.
3. Add textures to the material/Main Maps in Unity Editor
   • Ambient occlusion map file (e.g. AO.jpg) to Occlusion.
   • Albedo map file (e.g. col.jpg) to Albedo.
   • Normal map file (e.g. normal.jpg) to Normal Map.
   • Height map file (e.g. disp.jpg) to Height Map.
4. Setting Roughness and Metallic of material is a bit tricky.
   • Unity uses alpha channel of either Metallic map file or Albedo map file as a Smoothness. Here, we use Metallic map alpha channel as smoothness.
   • Note that Smoothness is an inverse of Roughness. You need to inverse roughness map file (e.g. rgh.jpg) by image editing tools (e.g. gimp or Photoshop etc.)
   • In the image editing tool, add inversed roughness map to metallic map file (met.jpg) as a alpha channel: see this for gimp.
   • Save new image as a png file.
   • Add image to Metallic.