The "similar" features in RDS is the "Better (but slower) sampling" in the shader editor for a texture map. However, I get the opposite effect in Carrara as the default "sampling" seems to work better. The "Gaussian" filter is useless as there is no control over the blurring of the pixels, much better to use the filters in a photo editor. It is essential to make sure that your proprtions are 1 to 1 to avoid pixel distortion, I.E., an 8 x 10 plane with a 576 x 720 ppi @ 72 dpi image.