Here is a very quick test I did trying to learn the materials and lighting techniques.
I used shared GI, there seems to be some issues on the side of the island that is lit by the sunlight, there is some flickering going on, any ideas?
I think it is reflection related and not a radiosity issue per se ( I may be wrong ) the island as well as the cabinetry has some subtle blurred reflection.
I love kray so far !! just anxiously awaiting for the Max bug fixes and mac/pc network rendering - would love to be able to use this for a real project as soon as those options are available.
Hmm... this looks funny. I don't know what it could be. Perhaps a bug? maybe u can isolate this surface so it renders realy quick and check if it's because of blurring or something else..
hey Mats.
Nice test, lighting should be reworked a bit but averagely good one.
I cannot stress this enough, with Kray you need to model clean...
Flickering can reveal a bug, but more probably its something different.
Please, once you're done and you're starting rendering check these things - a must-do before rendering in Kray, hope all users read this and anyway we'll put it into manual:
- 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 LW cad a fixPolygon pass is useful too. Generally speaking, most problems 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 rebiuld them.
- In each UV, select all polygons and cut them. if some points remains in UV view, select these and use "remove Vmap from vertices", then paste polygons you cut before.
- 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. Use as few as you can and possible use only "normal", "alpha", "multiply" blending modes. Other should be compatible but in some situations some problems ca appear.
- In surfaces, remove physically every shader in "shader" tab.
In 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.
I will make sure I follow those guidelines, I am still trying to get the hang of the lighting and materials in Kray, I was just getting used to Modo and now Im re-learning these concepts in Kray.
I love the speedy render and the fact that I can actually animate with it
I will double check the geometry like you said, this was a premade model that someone posted in a separate forum (which you are a member of also .
Thanks again for the tips, also looking forward to Johnny quick's tutorial.
- would love to be able to use this for a real project as soon as those options are available.
and now Im re-learning these concepts in Kray.