![pixplant metal workflow pixplant metal workflow](https://www.toolingandproduction.com/cms/tap/opens/enews/20140806TAP/ILSTechnology2.jpg)
![pixplant metal workflow pixplant metal workflow](http://www.911metallurgist.com/blog/wp-content/uploads/2015/08/Copper-Mining-AND-Extraction-Process-Flow-Chart.png)
Quickly transform photos into PBR materials and automatically create seamless tiling maps.Then you need a refractive index and extinction coefficient measurement of a minimum of 3, but preferably, a high number of wavelengths within the visible spectrum. To truly model a metal, the regular specular or metalness system isn't enough. I do remember the old Arnold documentation having a few of these, I can however not speak for their accuracy. This type of data isn't readily available anywhere, however something I may have solution for cooking in the background. And if you want to be accurate, well, then you need to go find out what the edge tint value for every specific metal you plan on using would be. So you could take an approach like the one mentioned above but leave the map colored, cutting the dielectric spec to black but leaving the metallic specular in and slightly brighten it. However, a true edge tint value is generally just the metals specular value but a little bit brighter, not always, but mostly. This will force all metals white, and force all non-metals black, essentially creating a metalness map, assuming all the values in that sRGB map is within a realistic/common range. If you have no metalness map, you can do what I regularly do to make one, levels adjust a grayscaled sRGB specular map with the settings: black point: 0.25/64, whitepoint: 0.75/192. If you need to separate metals from dielectric edge tint, you can use a provided metalness map for this. Most of the time however, white works just fine and adding a color to the edge tint parameter doesn't change things too much. So, the "true" value to use for a metal here would vary per metal, and be a very specific color for every specific metal or alloy. The purpose of a function like this is basically to fake a shifted edge reflection tint, something a system based on advanced IOR/dispersion (multi-wavelength N+K) would accurately re-create, but a singular specular color/value can't. If you leave the edge tint black on a metal like gold, the edge reflections will be pink. Hope I helped you more than I confused you :D.ġ - This material is fully dielectric, the only surface details showing are either ferric oxide or paint, none of which are metallic in nature.Ģ - The edge-tint parameter does affect the value of an edge reflection slightly on dielectrics, ai, if white on a dielectric the harsh angle reflections will be a little bit brighter, which may or may not be desired but is generally expected to be left black. The default black value can turn a little weird when sporting colored metals, so I usually just shift this to fully white. The "Metal Edge Tint" is just a way to color the edge reflection, an effect that some metals do have. To use specular in Redshift, set the "Fresnel Type" to "color + edge tint", this will result in a "Reflectivity" slot just under the "Fresnel Type", this is your specular map slot. The Specular workflow will produce higher quality whenever you have dielectric to metal transitions in your maps, something that works terribly in metalness. Now, all this being said, I would suggest you just use the good old specular workflow in Redshift instead. This can be looked at like a layer folder in Photoshop and "Weight 1" = 100% opacity of whatever that folder contains.
![pixplant metal workflow pixplant metal workflow](https://thumbs.dreamstime.com/z/melting-precious-metals-crucible-workflow-jewelry-workshop-close-up-145793229.jpg)
The "Weight" parameter under "Reflection" should be left alone in this case, it just weights whatever specular you have against black, and since that value already is 4% by default, you would just lower that even further be lowering weight. You can either leave this slot at the default value, set a custom value, or use one of our specular maps, just make sure to set its color space to sRGB if doing so. This slot works with our specular maps, which usually sit around 4-ish%, but in sRGB, shifting that 4-ish% to 22-ish%. This is the specular value for anything non-metallic, which by default is set to 4%. While Redshifts "Fresnel Type" is set to "Metalness", you have a "Reflectivity" value just above your metalness input. Specular is either set to a default value or controlled by a separate parameter, Redshift uses a separate parameter, being a regular percentage-based specular controller. If metalness = 0/black, the color map is diffusion. Diffusion is ignored as metals absorb all refracted light. If metalness = 1/white, the color map is specular. Essentially, the metalness map is just a mask that tells the system when the color-map should be used as either dielectric diffusion or metallic specular. The Metalness workflow does the same stuff specular does at the end, you just define the same things using different parameters. Hello Sean! The answer here is "it depends".