Function slang_sys::spAddPreprocessorDefine

pub unsafe extern "C" fn spAddPreprocessorDefine(
    request: *mut SlangCompileRequest, 
    key: *const c_char, 
    value: *const c_char
)

@brief Add a macro definition to be used during preprocessing. @param key The name of the macro to define. @param value The value of the macro to define.