Artifacts with hybrid/bidir/light paths
Posted: Tue Jul 09, 2019 1:47 pm
I have been trying to do more modelling of lens systems, this time with a simple Cooke Triplet. blend-file attached.
In my scene I only have a 5 cubes with emission (they produce some defocus circles), and a Suzanne model illuminated by a Sun lamp. With these being intersectable sources, rendering works well with both BiDir and classical Path tracing:
However, if I add light tracing, I get the following output:
There is some indication of this in BiDir as well if you crank up the gain (also the cubes are quite small, so Metropolis has some issues and didn't find one cube in this case, but I guess that is to be expected)
Any mistake on my side, or is this a bug?
In my scene I only have a 5 cubes with emission (they produce some defocus circles), and a Suzanne model illuminated by a Sun lamp. With these being intersectable sources, rendering works well with both BiDir and classical Path tracing:
However, if I add light tracing, I get the following output:
There is some indication of this in BiDir as well if you crank up the gain (also the cubes are quite small, so Metropolis has some issues and didn't find one cube in this case, but I guess that is to be expected)
Any mistake on my side, or is this a bug?