The Ultimate Glass Pack includes over 20 different kinds of glass each hand made to re-create real world glass samples from the Mississippi Glass CO. from the 1970’s! All of the glasses are created to be procedural and scale for any scene using Blender’s drivers system. There is video a included in the pack to learn more on how to use it and properly scale it to fit any scene, new or old.The glass is recreated using displacement so the actual geometry isn’t
affected. This means low poly counts and near infinite scalability. Only one of the Glass sets (Hammered) uses an image to re-create it but it still is scaled to avoid pixelation while still maintaining reasonable file size.
All the Glass samples here: