BUG? hello can you check export option? In gray scale whole sprite sheet exports ok BUT with color i receive one file with 7x2px (1kb)
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Yes, that’s the palette look-up texture. It is for a simpler & faster palette-changing shader. Horizontally are laid out colors the gray value is pointing to. Vertically you can change the active palette. I don’t know about Unity shaders, soon I might be able to create an example for it. Meanwhile, I have provided a link to example projects in the description for GameMaker2 and Godot.