FROM THE COMMUNITY COLLECTION

GI simm1

Created by richter

For my GI attempt in Bryce I chose spheres instead of walls for the "bounced color" source. The light in the scene consist of one almost 180deg. flattened square spotlight resized to 1/2 of the room's width, positioned in the center, [URL=http://img93.imageshack.us/img93/456/gidomeprovidermb0.jpg]a constructed hemisphere of lights[/URL] - an incarnation of David's lightrings - flat square spots were used instead of radials - one above the scene to provide the main light and one weaker behind the camera (last one not casting shadows) to simmulate the light coming from the opening. For the colored bouncing around the spheres I used modified versions of, again, lightrings rotated in the proper direction, with squared falloff and set to a suitable intensity of 1,2 or 3 (surface material/bump complexity dependent). The lightrings don't cast shadows either. Rendered in normal AA at this resolution, took almost 2 hours on my machine. Now you see why I chose to experiment with spheres. Of course lightrings can be deformed if the shape of our model requires so. The GI with bouncing light off a wall will require me to set things different.. which for now is tricky for me to do. There's no postwork on the image as we want to see things directly from Bryce and not altered. I.e. the glow around my main light above is another sphere slightly stretched, fuzzy material applied with 100 ambience. Overall it's not much, good start I guess. It's up to you to tell. And thanks for the info about your GI x-periments, guys.