1GL_REGAL_log 2https://github.com/p3/regal/tree/master/doc/extensions 3GL_REGAL_log 4 5 GL_LOG_ERROR_REGAL 0x9319 6 GL_LOG_WARNING_REGAL 0x931A 7 GL_LOG_INFO_REGAL 0x931B 8 GL_LOG_APP_REGAL 0x931C 9 GL_LOG_DRIVER_REGAL 0x931D 10 GL_LOG_INTERNAL_REGAL 0x931E 11 GL_LOG_DEBUG_REGAL 0x931F 12 GL_LOG_STATUS_REGAL 0x9320 13 GL_LOG_HTTP_REGAL 0x9321 14 void glLogMessageCallbackREGAL (GLLOGPROCREGAL callback) 15 typedef void (APIENTRY *GLLOGPROCREGAL)(GLenum stream, GLsizei length, const GLchar *message, void *context) 16