Applied to a texture in the background of a scene. It can stretch or pan a background texture as needed.
As an environment shader, this tool can make a background infinite. It can also reveal the 2D background when the surface reflects nothing.
As a lens shader, it can place the texture in front of the entire scene, acting as a slide projector.
This shader can be applied directly to the camera in the lens shader stack. See Applying Lens Shaders to Cameras [Cameras and Motion Blur].
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