shader precompiler

a c style precompiler for text file like shader source code, requires c++17 minimum

featured preprocessor directive

• #define
• #include
• #ifdef
• #ifndef
• #undef
• #error

feature

• macro
• file inclusion and recursive file inclusion
• error statement
• dependency file for checking if the destination file need to be reprocessed

usage

#include "ShaderPrecompiler.h"

std::map<std::string, std::string> define;
define["val2"] = "pass";
if(ShaderPrecompiler::needsReprecompile("output/test.glsl", &define))   //check if the destination file need to be reprocessed using the destination dependency file
    ShaderPrecompiler::precompileShader("input/test.glsl", "output/test.glsl", &define);