> 32X had an RLE framebuffer mode, so you only have to plot the pixels at the locations > where the color changes on each scanline. That significantly reduces the amount of > work needed to do flat-shaded 3D. (The CD-i and Apple IIgs had similar modes).
Amiga HAM was also originally intended for this, although it made more sense when it used HSV instead of RGB.
It helps for fillrate but clipping is a bitch.
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