In IL-2 Versions 4.03(?) and earlier, setting water=3 was the ATI equivilent to water=4 for nVidia. From 4.04 and newer, water=3 & 4 appear to be only for nVidia and 1 & 2 for ATI. I have tested all water=1, 2, 3, 4, appearances with my ATI card and I see that 2 provides the best appearance.
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