Hello everyone, (maybe @Vevex if you read this) i´m following the " How to paint a car with the new material system " guide (HERE) At the end of PART2 it says : "If you have 6 regions, you need to copy the Alpha region in the PSD Alpha Channel, and then you need to save as DXT5 (Interpolated Alpha). BE SURE you are saving that specific Alpha Channel, instead the main Spec Map containing the Carbon Fiber bits, as we've set above." I have only 4 (i´m not using the region 5), but in witch case "the region alpha" will be used? Is that used for the windows, windshield? If so i don´t understand the "process". Should i use the other PSD file called "AstonMartin_Vantage_GT3_windshieldout" and apply the process using only the "Region Alpha" layer? I´m a bit lost (my bad english for sure ) Also, i´ve assigned the "black region" as explained in the guide but once in the showroom and the "local host" when i use "chrome" for "black" the chrome effect is assigned to the entire paint Ok the region DDS file must have the "alt" as name too ( ) I leave you a link to have a look to the my PSD files (maybe easier to understand where i´ve make a mistake) My PSD FILE HERE In advance thanks for your help.