bug on the geometry

[Grafikus]

hello to all, I am here for the first time and  bad know english, so please understand if I do not to put it lucidly.
in this picture the ladder on the geometry of the ball,  on the daylight where the sun,

picture not present on the night of ladders, apparently due to the fact that there is no direct exposure to the beam
mesh geometry like normal
what could be the problem?
may be in the settings renderer can take this into account?
or corona renderer sensitive to the quality of geometry?

[maru]

It is known but it's not a bug.

http://forum.corona-renderer.com/index.php/topic,11.msg24.html#msg24
http://forum.corona-renderer.com/index.php/topic,443.msg3268.html#msg3268
http://forum.corona-renderer.com/index.php/topic,1793.msg16910.html#msg16910

[Ondra]

It is a bug - it will just be difficult to fix

[Grafikus]

It is known but it's not a bug.

http://forum.corona-renderer.com/index.php/topic,11.msg24.html#msg24
http://forum.corona-renderer.com/index.php/topic,443.msg3268.html#msg3268
http://forum.corona-renderer.com/index.php/topic,1793.msg16910.html#msg16910

Thank you, turns out I'm not the first. ))

[Grafikus]

It is a bug - it will just be difficult to fix

WHY BE DIFFICULT TO FIX?

[Ondra]

because it is not a bug in Corona, but in the concept of shading normals, which are a huge hack. It cannot be "fixed", it can be only avoided by another hacks.

[Grafikus]

because it is not a bug in Corona, but in the concept of shading normals, which are a huge hack. It cannot be "fixed", it can be only avoided by another hacks.

how to deal with this? how to adapt the geometry less? less is better to look like? because the mesh geometry in my scene optimal and I do not want to increase the mesh geometry, if I use a lot of these objects it will pick up my computer resources! what do you advise?

[borisquezadaa]

You could use turbosmooth modifier over your sphere. And if memory are a concern you can create a CoronaProxy of that ball  and scatter copies of it on the scene i guess.

[Ondra]

yes, using turbosmooth helps. Only other option is currently not using strong directional light sources.

[tanguybod]

Well this render artifact is around for ages, in Maxwell, Fry or Vray we were dealing with it same way. Decimating the geometry. Not much a big deal those days.

[Grafikus]

thank you all, you enlighten me ))