I'm studying Unreal Engine, this chapter is talk about visual effects: Rendering Overview

Some of them has obvious picture I can see whats the differences. But not all of them. Is there a site can let me input the keyword, like 'bloom', then it shows the description, a image contains 'no bloom' and 'has bloom' both?

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The Unreal Engine documentation has good explanations for their various post-processing effects like Bloom. You can find more information about it here: https://docs.unrealengine.com/en-us/Engine/Rendering/PostProcessEffects/Bloom

In the case of UE4, bloom becomes observable once color values push beyond the 1.0 value.

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  • $\begingroup$ You can also turn lots of things on and off in UE4 itself, using the 'Show' menu in the editor viewports. $\endgroup$ – Nathan Reed Apr 12 '18 at 21:04
  • $\begingroup$ @mbl 'bloom' is an example, not my real confusing effect. Something like 'Sub-Surface Shading' or 'Ambient Occlusion', I can hardly tell what effect exactly it shows when with or without it. $\endgroup$ – naive231 Apr 16 '18 at 6:03

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