- Thu Apr 04, 2013 9:50 pm
#366809
Hi Choo-chee, I have just finished work on an interior scene and have a new technique that might help.
First of all I just want to say that this is not a solution it is a workaround, so it is not 100% accurate and wont work for all cases but in my case it gave me an immeasurable improvement in time and quality.
Dario mentioned that noise will be coming from some light sources more than others, in a similar way some areas are far more susceptible to noise (a particularly inaccessible corner of a ceiling for example)
I have just finished working on the worst case scenario, an exhibition gallery with black carpet, black walls, glossy objects, loads of glass and a white ceiling all lit by downward pointing spotlights.
While the objects lower down were all clear by SL16, the ceiling was still extremely noisy at SL21 where things just get too slow.
To isolate the problem I created a render region around the ceiling only and (losing accuracy) replaced some of the materials outside of the region with a 97% roughness material of the same color and whiteness.
While loosing a bit of accuracy in the distribution of light hitting the ceiling, I gained a HUGE increase in speed and SL10 looked like the previous SL20.
I then rendered everything else leaving a bit of overlap to merge the images seamlessly in post.
As I said this will not work in all cases but can be a life saver in some, and if noise happens to collect in one small area you can always just region render that bit to some ridiculous SL rather than doing the whole image.
Best
Jules
- By lebulb