From the course: V-Ray 2.0 for Maya Essential Training
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How light cache works - V-Ray Tutorial
From the course: V-Ray 2.0 for Maya Essential Training
How light cache works
If irradiance mapping comes top of the list as the most widely used of V-Ray's GI engines in the primary bounce slot, it is probably safe to say that Light cache can make the same claim when it comes to being used as a secondary bounce engine. Now, just so you are certain where the Light cache controls can be found, let's go and open up our Render Settings window. Let's go into the Indirect Illumination tab, and with Light cache set as our Secondary bounce engine, let's go and open up the Light cache rollout, and you can see, we have all of these options, all of these controls that we can work with to create our GI solution from a secondary bounce engine perspective. Now light cache, like irradiance mapping, is another view-dependant GI technique. This, of course, means that the same limitations apply; the solution is calculated only from the rendering camera's point of view, and so, if we move the camera, we will create holes in the solution that can only be filled by recalculating…
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Contents
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Global illumination (GI) explained3m 55s
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Understanding primary and secondary bounces3m 34s
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How irradiance mapping works5m 30s
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Using irradiance mapping, part 14m 35s
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Using irradiance mapping, part 25m 44s
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How light cache works3m 48s
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Using light cache7m 58s
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Understanding brute force GI2m 18s
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Using brute force GI7m 3s
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