Leaderboard

Yes, It's a very odd look, like my screen is dirty. It is basically a dithering done to counter the "banding" artifacts of the process I've been experimenting with parameters to see the tradeoffs in time vs. quality and the noise pattern can be substantially reduced. Fortunately, with modern CPUs and RAM, radiosity renders are not impossibly long anymore. I think you would find it very interesting for the indoor scenes you are doing. Animation will be possible. Here is some very obvious banding when "jitter" is set to zero. Discrete reflections of the vase appear on the wall. The severity of that can be reduced by increasing jitter. 5%... 10%... 25%... 100%

The bug did not happen to me, worked without issue. I have an NVIDIA GeForce GTX 970M 3 GB GDDR5 with the latest drivers.