Version: 2018.4
Texture Streaming
Texture Streaming API

Streaming Controller

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The Streaming Controller component is part of the Mipmap Streaming system. You do not need to use this component when the Add All Cameras setting in Quality settings (Edit > Project SettingsA broad collection of settings which allow you to configure how Physics, Audio, Networking, Graphics, Input and many other areas of your Project behave. More info
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> Quality) is enabled. Add All Cameras is enabled by default. Use the Streaming Controller component to trigger mipmap streaming for a CameraA component which creates an image of a particular viewpoint in your scene. The output is either drawn to the screen or captured as a texture. More info
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in your sceneA Scene contains the environments and menus of your game. Think of each unique Scene file as a unique level. In each Scene, you place your environments, obstacles, and decorations, essentially designing and building your game in pieces. More info
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when the Add All Cameras setting is disabled. For more details on how to set-up and use the Streaming Controller component, see Mipmap Streaming API.

The Streaming Controller component
The Streaming Controller component
PropertyA generic term for the editable fields, buttons, checkboxes, or menus that comprise a component. An editable property is also referred to as a field. More info
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Description
Mip Map Bias Use this setting to force Unity to load a smaller or larger mipmap level than the one that the Mipmap Streaming system has automatically chosen. Enter a value in this field to set the offset that Unity applies to this mipmap level. Unity adds this offset to all the mipmaps assigned to Textures that are in the Camera’s view.

For example, if Unity loads a texture at mip 1 and the Mip Map Bias is set to 1, this means it will load mip 2 instead.

To control this setting using the API, use StreamingController.streamingMipmapBias.
Texture Streaming
Texture Streaming API