A few years into my Redshift journey, I realized something simple yet profoundly irritating: you can have a beautiful CG-glass object—perfectly lit, physically accurate refractions, caustics dancing just right—but when it hits the composite, the alpha channel is all wrong. A flat white blob. An opaque mask where transparency should live. The glass behaves like plastic, and suddenly 90% of your compositing magic goes into fix-up rather than artistry. Check out this video to se