Sheen with “Link To Albedo” looks unexpectedly dark when Metal is zero, but it looks OK when Metal is one. Does anyone know why this is the case?
Using a solid color seems to always provide better results than Link to Albedo.
The fabric in this example has two material variants:
The first variant uses 100% metallic fabric, so specular reflections are colored similarly to how satin reflects lighting:
The second variant uses a metalness texture to assign the gold threads as metal and the purple threads as non-metal:
The all-metal example is a non-physically accurate use of metalness (satin is not metal), however it seems to reflect lighting more like real satin. The non-colorized reflection in the second variant does not properly replicate the look of satin; the fabric looks more like plastic.
Real-world satin brocade examples for reference:
- 75cm*50cm Thick CHINESE BROCADE FABRIC DRAGON DESIGN 100% POLYESTER WIDTH|brocade fabric|designer fabric|chinese brocade fabric - AliExpress
- 90cm*50cm Jacquard Damask Chinese Baby Clothes Kimono Hanfu Brocade Satin Phoenix Fabrics|fabric fabric|brocade satin fabric|satin brocade fabric - AliExpress