I'm trying to import a shader from ShaderToy in Pure data and I don't know what to do about "iChannel0". What can I do in my shader.frag ?
The use of "iChannel" (0, 1 and more) in ShaderToy is clear but I don't know how transform it for Pure Data. It appear everytime a shader use a noise animation and it's happend often.
An example of a shader with this function line 19 https://www.shadertoy.com/view/lslXRS
Any advice is appreciated. Thank you.