If you want to know a bit more about the details of the platform, these 2 presentations from GDC 2014 are still some valid material:
<a href="http:&#x2F;&#x2F;www.gdcvault.com&#x2F;play&#x2F;1020741&#x2F;New-Techniques-Made-Possible-by" rel="nofollow">http:&#x2F;&#x2F;www.gdcvault.com&#x2F;play&#x2F;1020741&#x2F;New-Techniques-Made-Pos...</a><p><a href="http:&#x2F;&#x2F;www.gdcvault.com&#x2F;play&#x2F;1020688&#x2F;Practical-Techniques-for-Ray-Tracing" rel="nofollow">http:&#x2F;&#x2F;www.gdcvault.com&#x2F;play&#x2F;1020688&#x2F;Practical-Techniques-fo...</a>