How to i use C + + to realize these functions

[feilong xu]

https://github.com/Autodesk/standard-surface/blob/master/reference/standard_surface.osl#L11

The above is an OSL implementation of a standard material. I want to use C + + to implement this material, but in the process of implementation, I found that some functions are built-in, and I can't find a specific implementation. How can I find the implementation of these functions

funtions list:

void fresnel(Vector I, Vector n, float eta, float &kr, float &kt)

{

//TODO:To be realized

//Implementation can be found

}

color sheen(normal N, float roughness)

{

//TODO:To be realized

//Implementation can not be found

return color();

}

color oren_nayar(Vector input_nornal, float roughness)

{

//TODO:To be realized

//Implementation can not be found,just BUILTIN

return color();

}

color bssrdf(Vector, color, float)

{

//TODO:To be realized

//Implementation can not be found

return color();

}

color translucent(Vector, float)

{

//TODO:To be realized

//Implementation can not be found,just BUILTIN

return color();

}

color microfacet(string, normal, Vector, float, float, float, int)

{

//TODO:To be realized

//Implementation can not be found,just BUILTIN

return color();

}

color emission()

{

//TODO:To be realized

//Implementation can not be found,just BUILTIN

return color();

}

color metal(string distribution, normal N, Vector U,

color n, color k, float xalpha, float yalpha)

{

//TODO:To be realized

//Implementation can not be found,just BUILTIN

return color();

}

[Larry Gritz]

Those are built into the renderer, not into the OSL library.

So maybe this is a question you should be asking Autodesk, or somebody who maintains the GitHub project you are referring to?

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Larry Gritz

l...@larrygritz.com