Working with the Adaptive Subdivision sampler

We come now then to the final choice that V-Ray offers to us in terms of…image-sampling engines, which of course means we're working with the…Adaptive Subdivision System.…To set that up, of course we need to come into our Render Setup dialog. If we…make certain we are in the V-Ray tab and come down to our Image sampler rollout,…from our dropdown list, we can just choose the Adaptive subdivision system.…Again, we need to make certain that our secondary rollout is open so that we…can access all of the controls and parameters.…

The Adaptive subdivision engine works a little differently than the fixed and DMC engines,…in that instead of creating a pixel array to subdivide internally, V-Ray instead…creates a grid set to the same resolution or size as our Render output options,…and this grid acts as an internal overlay that V-Ray uses to position or place…its samples in the scene.…After making a first pass, the samples are compared and if the difference…between any two samples is greater than the value set in this Color threshold…