Forum: Poser - OFFICIAL

Subject: Free Environment Sphere/Dome props and Effects Shaders

bagginsbill opened this issue on Jul 29, 2008 ยท 156 posts

bagginsbill posted Wed, 24 June 2009 at 7:14 AM

Attached Link: Not your average IBL image

Sure - I did something like that in 2006 before Poser could read an HDR image. See the link.

Here's an newer version of that shader, using the image from the tutorial you linked.

The Bias Value_1 multiplier scales the LDR image (in gray scale) so some of it is above 1. Then using a low Value_2 pushes all luminance down that is below 1, and all luminance up that is above 1.

The resulting value is used to multiply with the original colors and add some of that with the original colors.

On the left, you see a darkened version of the result, but the sun and it's reflections are still hyper-colors, because they were way above 1.

Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)