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By Austin Smith Demonstrates two weaknesses of Ray Tracing. 1) This relatively simple scene took over 21 minutes to render on a brand new state-of-the-art computer, which I feel is a bit long. 2) No color bleed; this can especially be seen around...

The two left spheres have the same texture (Spiky) but only the farthest left one has displacement mapping turned on. The difference is striking. The right two spheres are both made of blue plastic but with very different phong shading parameters

By Austin Smith