Hey the front page thread listing says Timberwolf posted a reply - but it's not here. Timerwolf - did you have a question.

Meanwhile, a little amusement. Using exactly the same technique, but different math, here is another fun demonstration of image coordinate transformation.

Using only shaders, I can take any image, photo or render, and turn it into a kaleidoscope image.

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Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)