I study with the MobileBasePassPixelShader.usf,Found this function
{CalcMaterialParametersEx(MaterialParameters, PixelMaterialInputs, SvPosition, ScreenPosition, bIsFrontFace, WorldPosition, WorldPositionExcludingWPO); }
but can not find where calculate the basecolor map,like sample2D (basecolormap,uv).any body help?Thanks in advance!