I posted this as advice to an user but heer it is for all you guys, please read this carefully.
I cannot stress this enough, with Kray you need to model cleanly.
Please, once you're done and you're starting rendering check these things:
MODELER
- merge points
- use Unify Polygon command to eliminate doubled geometry.
- check for floating points, 2pts polys, non-planar polys, corrupted or messed up polys, intersecting polys. If you have LWcad a FixPolygon pass is useful too. Generally speaking, most problems in Kray are caused by messed up models or wrong geometry. Kray is good in "filtering" these but better stay the most clean as possible.
- Check for UVs: remove all not used UVs, remove imported obj/3ds uvs or rebuild them.
- In each UV, select all polygons and cut them. If some points remain in UV view, select these and use "remove Vmap from vertices", then paste polygons you cut before. UVs should be only on desired geometry.
- In surfaces, delete each empty layer (i.e. image layers without a map)
- In surfaces, better to delete non-used layers (deactivated ones)
- In surfaces, better use few layers; Kray is higly compatible with LW surfacing but too many layers can give problems.
- In surfaces, use as few Layers as you can and possibly use only "normal", "alpha", "multiply" blending modes. Other should be compatible but in some situations some problems can appear.
- In surfaces, remove physically every shader in "shader" tab.
LAYOUT:
- Delete unused geometry, nulls and so on. The cleaner the scene is, the better.
- Be sure all light you use have inverse square faloff and lower ambient to zero.
- In render global, activate all four raytrace tags. Sent recursion limit as you like, this will be your light-bounce number too. You can overridde this typing "recurse 100;" in commands, where 100 can be whatever you like.
now you are ready to render, 80% of problems i've seen until now in new user's scene are avoidable following literally this list.
Good work !
Paolo
