tag:blogger.com,1999:blog-8992579354369393419.post7730539593326970801..comments2023-12-14T09:51:40.760-05:00Comments on Photorealizer: Physically Based Renderer by Peter Kutz: Diffuse Fresnel ReflectancePeterhttp://www.blogger.com/profile/00411424533792457362noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-8992579354369393419.post-66188437082217401622012-06-15T05:50:38.756-04:002012-06-15T05:50:38.756-04:00Perhaps you are just using the wrong eta? In thos...Perhaps you are just using the wrong eta? In those equations eta is defined as eta = eta_from/eta_to. So the reason you get 60% for 1.5 is that this is internal reflectance in a dense medium, which is high due to total internal reflection.Andersnoreply@blogger.comtag:blogger.com,1999:blog-8992579354369393419.post-35648501066615079062012-06-06T16:24:29.203-04:002012-06-06T16:24:29.203-04:00This is very interesting! I will dig into this. ...This is very interesting! I will dig into this. Though I'll keep following your postings here, if you can also send an email about anything like this in PBR that you think is wrong/broken. that'd be great!<br /><br />Thanks,<br />-mattMatt Pharrhttp://pharr.org/mattnoreply@blogger.com