TextureImporterSettings.flipGreenChannel

説明

Indicates whether to invert the green channel values of a normal map.

Inverting the green (Y) channel values of a normal map is useful if the normal map uses a different convention to what Unity expects.

If the normal map conventions require more general channel swizzles or inversions, use the swizzleR, swizzleG, swizzleB, swizzleA settings.