The attached has around 8k samples per pixel, taking around 1min/frame (1 hour total). 256k subframes for motion blur, each being a single path of 16k iterations. Only plain simple #MoebiusTransformation stuff without xaos control..
I implemented motion blur with a power law for weighting time in the shutter-open interval (for directional effect). Can also make the shutter much longer than the frame time for the interesting trail effects.
The video upthread was using this image as a 2D palette:
but the auto-white-balance part of the code seems to have made it more purple. The hivis is still vaguely visible.
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