This demonstrates traditional graphics techniques vs. RTX by making a fully ray-traced «game» in Unreal Engine, looking at global illumination in part 1.
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Today’s content fakes global illumination to illustrate the ups and downs of using RTX. The upside is obvious — it’s easier, allows better dynamic movement of objects while retaining GI, and is theoretically more accurate. The downside is performance, clearly, and noise. Our 100% ray-traced… «game» provides some early demos of DXR’s implementation into Unreal Engine, which is presently (at writing) on its third preview build of the DXR implementation. Epic Games still has a lot of work to do on this front, but we can take an advance look at RTX shadows, reflections, global illumination, and more.
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Video: Andrew Coleman
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