Lookup UV

Outputs

Name	Type	Description
Texture Output	Texture	The texture input, rearranged according to the UV input.

Inputs

Name	Type	Description
Texture Input	Texture	The texture to read from.
UV Input	Texture	For every output pixel, where to read in the texture input. Red is across from 0 for the left edge to 1 for the right, green is down from 0 for the top to 1 for the bottom.

Parameters

Name	Type	Description
Output Format	Enum	Whether the output takes the size and type of the texture input, of the UV input, or of the settings below.Choices: Copy Input A, Copy Input B, Manual
Texture Type	Enum	The channels of the output texture. Follows an input unless the output format is Manual.Choices: R (u8), RG (u8), RGBA (u8)
Texture Size	Vector 2 Int	The size of the output texture in pixels. Follows an input unless the output format is Manual.
UV Channels	String	Rearranges the channels of the UV input, as four letters from R, G, B, A, 0 and 1. The first two are used as the coordinates.

Lookup UV rearranges a texture completely. The UV input is a map. Every pixel of it holds a position in the texture input, and the output pixel at that place gets the color found there. A UV map that runs from black at the top left to red at the right and green at the bottom reproduces the texture as it is. Any other map bends, mirrors, tiles or scrambles it.

Where Displace nudges pixels away from where they were, Lookup UV says outright where each pixel comes from. That makes it the operator for lens effects, projections onto odd shapes and any warp that is easier to draw as a map than to describe as a shift. The map can come from a file, from a generator, or be built out of gradients with Blend and Channel Shuffle.

The coordinates are read from the first two channels of the UV input, red for across and green for down, unless the channels are rearranged. Coordinates past the edge wrap around to the other side.