如何在OpenGL GLSL中导入库

Question

My question is - how to import a library into OpenGL GLSL shader? I mean - is there a way that is supported by OpenGL itself, not a facade over the API which concatenates strings in order to mix shader code with a library code.

Answer 1

There is no way that is supported by OpenGL itself without extensions. Many engines that wrap OpenGL add their own preprocessor to handle #include macros to solve this problem, but this qualifies as "a facade over the API which concatenates strings in order to mix shader code with a library code."

The ARB_shading_language_include extension provides an OpenGL version of this functionality, but may not be available on your particular machine. For an overview on this extension, see this question: How to Using the #include in glsl support ARB_shading_language_include

Answer 2

There exists no real solution.

But I think I know what the problem is:

The problem is that every shader is completely associated to its client code: Every shader program makes absolutely no sense without its client program.

Looks like declarative languages integration into OOP or whatever langiage.

So it's not the problem of GLSL it's a problem of the client language eg C++, Java (Android) to solve that issue. But just my opinion.