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Did you try the shader.com shader editor where you stack shaders and effects in layers? V similar approach!
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so does Photoshop and thousand other visual editing tools. Hardly a reason to claim it to be a copy. Also "slopfork" seems harsh considering it seems limited, but well designed imo.
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Maybe a little harsh yes. But compare these screenshots of the two products/features

https://imgur.com/a/41BybD1

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I see a deep tree and a shallow tree in the two screenshots, representative of entirely different approaches.
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