Search
-
Re: The Gamedev Cast is answering questions about PBR!
Yeah, with the metalness workflow, the albedo map is both the diffuse and specular map in a way. For metalic surfaces (white in the metalness map) the specular intensity and color comes from the albedo map, and the diffuse color is set to black (because pure metals reflect nearly all the light that hits them and… -
Re: The Gamedev Cast is answering questions about PBR!
Yeah, with the metalness workflow, the albedo map is both the diffuse and specular map in a way. https://www.artsfon.com/games/ -
Re: The Gamedev Cast is answering questions about PBR!
Yeah, with the metalness workflow, the albedo map is both the diffuse and specular map in a way. https://www.artsfon.com/games/ -
Re: The Gamedev Cast is answering questions about PBR!
sorry if this question has asked before. I want to ask about the grayscale value on Metalness map. How the shader will deal with it ? (especially TB2 and UE4). is it Metal? with black diffuse and reflectivity is pulled from the albedo map ? or it'll treat as non-metallics ? -
Re: The Gamedev Cast is answering questions about PBR!
Values other than 0 or 1 will be treated as partially metallic. What this is means is that depending on the value, lets say a value of 0.5, the shader will pull the diffuse and reflectivity from the albedo map, and only darken the albedo map half way. Generally, this isn't something you'll want to do very often, usually… -
Re: The Gamedev Cast is answering questions about PBR!
Because that stands for: Albedo = Diffuse Microsurface = Roughness/Gloss Reflectivity = Spec None of that data even mentions metalness. You assumed because there was an "M" it meant metalness. There are two distinct workflows. One is the reflectivty/spec workflow which is nearly the same as last gen in terms of what the… -
Re: The Gamedev Cast is answering questions about PBR!
you may need to explain a little more in-depth, but going into the math a little it works like this: Reflectance = albedo * metalness + 0.04 * (1 - metalness)); Diffuse = albedo * (1 - metalness); so if you take whatever value is in your albedo, you multiply it by the inverse of the metallic map (so anything black, non… -
Re: The Gamedev Cast is answering questions about PBR!
The first material is not metal, but painted metal. Its important to remember that the metalness value defines the top layer, if you have a layer of paint, dirt, or anything else on top of an otherwise metallic object, the material is not metal. It doesn't have colored specular, the spec highlight is white as seen in the… -
Re: The Gamedev Cast is answering questions about PBR!
For the most part, diffuse/albedo and gloss/roughness maps simply vary. Yeah, there will be reasonable ranges for most material types, like you would be unlikely to find natural wood that is 0,0,0 or 255,255,255, or to find charcoal brickets that are 100% smooth/glossy. You can't find reflectance values for every surface…
9 results