c++ - Converting string to regular function
Author
Hi all,
is there any way to convert standart text variable (for example: char Text[1024]) to function? Of course assuming that text variable contains full function code. Or, if text variable contains function code how to call it?
Thanks for any suggestions!
Not short of including a compiler with your program and calling the compiler at runtime. Consider instead using a scripting language like Python, Lua or Angelscript.
Author
I want to use it in DirectX FX files - each FX file (as a shader container) needs special processing (code) and I want to put that code in the FX file as a string and at runtime get that string and execute it just before starting the effect.
You'll want to use some kind of scripting language for this; if the nature of the prologue code you're putting in the .fx file is very simple, you may be able to simply hand-roll your own crude 'interpreted language' and use that. Otherwise you may need to look in to embedding something like Lua. You could do this with C++, too, but it would be extremely cumbersome (you'd need to host yourself a compiler, et cetera).
It seems like you're trying to take a code-driven approach to what should be data-driven, however. That is, you want to write code to do some effect-specific setup that you should perhaps attempt to generalize into a data-driven model. What kind of things do you see this prologue code doing for you?
It seems like you're trying to take a code-driven approach to what should be data-driven, however. That is, you want to write code to do some effect-specific setup that you should perhaps attempt to generalize into a data-driven model. What kind of things do you see this prologue code doing for you?
One thing you might be able to do is instead of putting C++ code into the fx file you'd put the fx file in with the C++ code, as a string, and load them as a DLL - something akin to Yann's shaders.
Quote:Original post by jpetrie
What kind of things do you see this prologue code doing for you?
Quoted for emphasis. The best design choice really hinges on this question.
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