Adaptive Sampling

The adaptive sampling allows you to adjust the sampling concentration on specific areas of interest depending on the material to define.

To create a BSDF, the material’s behavior has to be described and interpreted. Some areas of a BSDF are considered more interesting because of the information they contain and provide. You can identify three main areas of action when looking at a material’s optical behavior:

• The Specular Area which represents the area that surrounds the specular (intensity) peak.

• The Diffuse or Gaussian area which covers a broader area around the specular area.

• The Retro Reflective area which covers the integrity of zenithal and azimuthal planes.

The adaptive sampling consists in adapting the sampling according to the area you are dealing with.

According to the BSDF to generate and its expected behavior, you need to adjust the sampling on specific areas (areas that are going to concentrate the most information).

Figure 1. Three main areas of interest when adjusting a sampling.