View source for $mraotexture

{{Stub}}[[file:MRAO_map_example.png|350px|thumb|right|An example of an MRAO map]][[File:PBR Texture Roadmap.png|350px|thumb|right|A roadmap of a standard PBR texture (With a heightmap embedded into the Normal map) [click to enlarge]]]{{this is a|shader parameter|name=$mraotexture|game=Strata|game1=Titanfall engine branch|game2=Hunt Down the Freeman}} It is available exclusively for the [[PBR (Strata shader)|PBR]] shader to define the MRAO map to use for the Physically Based Rendering effects.
{{note|This parameter is also available in [[Adding PBR_to_Your_Mod|Thexa4's PBR shader.]]}}
==Additional Parameters==
{{MatParam|$mraoframe|int|Frame to use if $maraotexture is animated}}
{{MatParam|$mraoscale|float|Scale the RGB channels of the texture by this amount. {{Confirm|Apparently nonfunctional?}}}}

== Physically Based Rendering ==
{{Main|Physically Based Rendering}}
[https://www.adobe.com/products/substance3d/discover/pbr.html Physically Based Rendering] is a photorealistic shading technique that takes lighting information about the metalness, roughness, and ambient occlusion of a texture and then renders lighting in a realistic manner. Most modern game engines utilize PBR for most of their textures, and unfortunately due to the {{Source|4}} engine's age, it is not supported by all the official Valve branches. However, some third party games and engine branches support this shader.

== What is an MRAO map? ==
An MRAO ('''M '''etalness, '''R''' oughness, '''A'''mbiemt '''O'''cclusion) map is a texture that contains lighting information on the metalness, shininess, and self-shadowing of the diffuse (a.k.a base, albedo) texture through the intensity of the RGB channels. This reduces the amount of texture maps needed for one PBR material from 5 to 3, reducing file space and memory cost. However, image editing programs often do not have an easy way to make these textures. Thankfully, there are a couple of methods to create these textures that work.

{{Creating a MRAO map}}

==See also==
*[[PBR (Strata shader)]]
*[[Adding PBR to your mod]]
*[[Physically Based Rendering]]
*[[:Category:PBR|Category:PBR]]

==External links==
*https://www.adobe.com/products/substance3d/discover/pbr.html - All You Need To Know About PBR (Adobe.com)

[[Category:PBR]]