UnityEditor.TextureUtil.SetAnisoLevelNoDirty C# (CSharp) Method

        public static extern void SetAnisoLevelNoDirty(Texture tex, int level);
        [MethodImpl(MethodImplOptions.InternalCall)]

        // wrap/filter/aniso editors will change serialized object
        // but in case of textures we need an extra step to ApplySettings (so rendering uses new values)
        // alas we cant have good things: it will be PITA to make sure we always call that after applying changes to serialized object
        // meaning that we need to work without relying on it, hence we do similar to TextureImporter:
        //   use TextureUtil methods to update texture settings from current values of serialized property
        // another possibility would be to do it separately for wrap/filter/aniso
        //   alas for wrapmode i dont see how it can be done clearly and leaving it out seems a bit weird

        protected void ApplySettingsToTextures()
        {
            bool anisoDiffer = m_Aniso.hasMultipleDifferentValues, filterDiffer = m_FilterMode.hasMultipleDifferentValues;
            bool wrapDiffer = m_WrapU.hasMultipleDifferentValues || m_WrapV.hasMultipleDifferentValues || m_WrapW.hasMultipleDifferentValues;

            foreach (Texture tex in targets)
            {
                if (!anisoDiffer)
                {
                    TextureUtil.SetAnisoLevelNoDirty(tex, m_Aniso.intValue);
                }

                if (!filterDiffer)
                {
                    TextureUtil.SetFilterModeNoDirty(tex, (FilterMode)m_FilterMode.intValue);
                }

                if (!wrapDiffer)
                {
                    TextureUtil.SetWrapModeNoDirty(tex, (TextureWrapMode)m_WrapU.intValue, (TextureWrapMode)m_WrapV.intValue, (TextureWrapMode)m_WrapW.intValue);
                }
            }
        }