Lut, Shader, Programming, Blender3d, Unreal Engine.
of InColor.B being 0.125, which is half way between 0 and 0.25. So the caclulation is this. Read the Blue Value at the Lower end: Offset_from_Blue_Lower = Floor(InColor.B * (LUT_Dimension - 1)) /LUT_Dimension Read the Blue Value at the Higher End: Offset_from_Blue_Higher = Ceil(InColor.B *