Hi folks,

I keep running into a problem with radiosity and I'd like to ask, why it
behaves that way. Lets say I have a sky_sphere to illuminate a scene like
this:

sky_sphere { pigment { rgb 1 } } // Light
sphere { 0,1 pigment { rgb 1 } }
plane { y,-1 pigment { rgb .6 } }

Now, lets say I want to increase the light, so I set a higher pigment in
sky_sphere. But no matter how high I go, the scene doesn't turn white....
Why?

If I increase the pigment in the light-absorbing objects (plane and sphere)
it works, and the scene is able to turn white! Also, by setting a higher
brightness in the radiosity block, I can get more light in the scene.. BUT..
After much experimentation it seems, I am limited when objects can't really
emit light with strength above 1.. Somewhere the value is clipped and I
don't understand why.

It's not due to "max_sample" in the radiosity block that is turned off by
default.

Best regards,
Hugo

Post a reply to this message