How to return an object or value from function in das script to cpp host program?

[lvdpower]

How to return an object or value from function in das script to cpp host program?

C++ is calling das Context like this ctx.eval(fnTest, nullptr); It is not clear how to return a value from fnTest to host c++ program.

Thank you!

[borisbat]

If its passed by value - eval returns vec4f, which can be cast to the right type. if its passed by reference on the stack, eval's 3rd parameter is address of the buffer for the result.

    __forceinline vec4f eval ( const SimFunction * fnPtr, vec4f * args = nullptr, void * res = nullptr )