Some rules and a scene description:

There are two kinds of scenes:

  1. Artistic "nice" image
  2. Pure Radiosity
  3. Simulation

The simulation of the interior is very difficult and it's not possible for us to define THE right simulation.
It's in our mind how the cathedral could look like 500years ago, but it should be an image where we can see how the light could flow. The simulation has a very precise description of the sun/lightposition.... NO FILLIGHTS are allowed!!! This doesn't mean, that you can't use workarounds like selfilluminated windows or GI multiplyer, but you are not allow to change the lightsituation.!!!

For artistic image you can define a custom lightsituation, it's somehow a Freestyle competition. There you will be able to show us v-lights, sss, reflections, colored light even can use fillights. This image is not the technical approach to the scene but the way an artist expesses himself.

Pure radiosity is more like an closeup to radiosity without any textures to show the "lightbounces"



Please visit the unesco webpage for historical facts about Sibenik Cathedral.

The scene itself was modeled in Lightwave by Marko. I think it's very good modeled and optimized for GI calculation since you do not have many faces. The only problem is that there are some holes in the mesh which shouldn't be a problem since we all have the same mesh ...Marko told me that it's not finished yet.

There is also a little problem with the names of the maps which were converted to the 8.3 format when i have converted to max. It's more a cosmetic problem.

The lightwave6+ file is the reference file, the maxfile was converted with 3dexplorer and then manually retouched. i had to flip some normals and apply some changes to the smoothinggroups since they were not converted correctly.




IMAGESIZE: width: 750-800px , height: no rules, size: <200kb


1. Artistic image:

There are no rules!


2. Pure Radiosity:

Rules from the simulation but WITHOU ANY TEXTURE on the mesh!!!!!!



LIGHT: You have to use the same settings as below, where we have defined the exact time, position and orientation of the cathedral.

additional informations about sunorientation:

Altitude 56
Azimuth 240


CAMERA: The camera is not exactly defined, but you should choose a position where you look at the dome like below. You also can see what you should have on your image, at least: one support arch above and at least three full arcs left and right.

image by Tony


MAPS/MATERIAL: This is also a point where you can choose different maps and mapscaling, BUT please remember that the cathedral is of sandstone, i guess, so you are very limited in colors. Please use the downloaded maps!


You also can retouch and tweak your image in photoshop.