里面有
// Set to 1 for ON or 0 for OFF
#define USE_GEMTRUECOLOR 0 //[0 or 1] GEM : Applies GEMShader with true color look. !!Only use one GEMShader!!
#define USE_GEMREALISTIC 1 //[0 or 1] GEM : Applies GEMShader with realistic look. !!Only use one GEMShader!!
#define USE_SHADER3VERSION 0 //[0 or 1] GEM : Applies fixed version for users with forced shader version 3.