Single Image Random Dot Stereograms - Random dot stereogram is image created from dots. It is older rending method. Random dot stereograms was created from black&white dots. Now are SIRDS colorfull. You need only depth map for creating SIRDS. Drawback of random dot stereograms is that 3D shapes are not smooth and there are visible depth layers. Stereogram Explorer corrects this problem with light blur. There is not recomended use this rendering method. If you want to render dot stereogram, use dot texture for SIS method.