| Dithering is not that expansive in this case, either using bit shift(reduce hue level) or using masks (not error diffusion, it is very expensive). If the LCD only can display 4,096 color, I guess it uses hardware rendering. If you select to output to the external monitor using 24-bit colors, it still displays 24bit colors. The perform hit comes from Windows not the driver, because OS needs to move or fill more data when redrawing windows. | |
