Among modern render VRay programs are most popular. Far from exaggerating we can say that VRay is popular as much as all the other renderers mental ray, finalRender and brasil r / s together. This fact is all the more surprising and remarkable that the algorithm and the core programs were just a few people. The popularity of this program is most compelling reasons. First, VRay uses in the calculations advanced computational methods it was built solely and completely on the basis of the Monte Carlo. In this respect, perhaps, VRay can be used as a demonstration program for the Monte Carlo method. But besides that, VRay has a number of interesting innovative technology solutions, providing him an additional advantage in quality and speed of calculations.