From the course: Learning V-Ray for Maya
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Light caching
In this video we will be taking a look at the Light cache GI engine in V-Ray. Go ahead and open up the GI Scenes Engine Maya file and you will find this scene set up for you with this geometry in this camera angle. In the Indirect Illumination tab, GI and Reflective and Refractive caustics are already turned on. We're going to set the Secondary Bounces to none and we'll set the Primary Bounces to Light cache. Now, here is a render of the scene with no GI turned on. Now ,let's take a look at a primary bounce of Light cache in the scene. We can already see quite a bit of light filling in our box and our structure. Now, Light Caches, pretty fast and gives you a good result with the primary bounce. If you turn Light Cache on for the secondary bounce as well, and you render the scene, you may be surprised to see that there is actually really no difference between the two renders. Here is our primary bounce, light cache. And here is our primary, and secondary. And there is no difference…
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