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MOTION BLUR TECHNIQUES
Racer has multiple motion blurring options; car wheels can have multiple blurred models, and fullscreen motion blurring exists since v0.5.3 beta 6. Notice that wheel blurring comes relatively for free if you use full-screen motion blur, although currently the wheel blurring itself can look better.
Fullscreen Motion Blur
The method used is to use FBO's (Frame Buffer Objects). These are required anyway for fullscreen postprocessing GPU shaders. See also the page on fullscreen shaders for more information on motion blur.
(last updated November 13, 2012 )