Template:Creating a MRAO map

Creating an MRAO texture

Note:If the program you are using utilizes "smoothness" or "glossiness" maps, make sure to invert the colors of the smoothness/glossiness map before proceeding

There are a couple of methods used to port PBR textures to an MRAO texture. Here are two methods known to work for Strata Source based games.

Confirm:Do these methods work for other PBR-supported games?

GIMP

First, create a new image with the same resolution as your PBR maps. Next, open your PBR maps with the "Open as Layers..." button. This will open your PBR maps as layers to the current image, and not as separate image files.

Note:

Click to enlarge

The images you import must be grayscale. Even if they are visibly grayscale, GIMP may still read them as RGB images. If you are unsure if your images are using the grayscale format, navigate to Image→Mode and make sure that the Grayscale option is checked.

Next, navigate to Colors→Components→Compose and set the Red, Green, and Blue channels to the Metalness, Roughness, and AO layers respectively. Once you are done, export the image to a PNG or TGA file, convert it to a VTF, and then place it in the same folder as your diffuse and normalmap textures.

Next, create a blank VMT file. Copy-Paste the following text:

"PBR"

{ $basetexture "<insert path to diffuse texture>" $bumpmap "<insert path to normal map>" $mraotexture "<insert path to MRAO map>"

$envmap "env_cubemap" $normalmapalphaenvmapmask 1

}

Change the parameters to your specified filepaths, and you are done!

PBR-2-Source

Main article:  PBR-2-Source

Open the program and select "PBR(<desired use>)" in the dropdown on the right. Open each texture in their respective box on the left, select which reflections you want and click "Export".

Important:You must know what normal map style your material creation program used and set the "Flip Normal Y" box appropriately. If the program you use uses the 3DS Max style, uncheck the box. Otherwise, keep it checked.