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Ray Tracing
If you care for technical mumbo-jumbo: Ray tracing is a method for creating artificial
images by letting software follow imaginary light rays and adapt to optical effects
(virtually of course) created by hitting objects, causing reflection, filtering, etc. The
pictures created can be quite beautiful, but the process creating them is quite slow.
Modern 3D graphics cards do not perform ray tracing in the true sense, yet pixel shaders
can emulate ray tracing to a certain degree. There are also experiments going on using
ray tracing for real-time applications.
Sites about ray tracing
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