Method RunQuery

src/lua/LuaGLQueries.cpp:217–252

int LuaGLQueryMgr::RunQuery(lua_State* L) {
  static bool running = false;

  if (running) {
    luaL_error(L, "not re-entrant");
  }

  const LuaGLQuery* query = CheckLuaGLQuery(L, 1);
  if (!query->IsValid()) {
    luaL_error(L, "invalid query object");
  }

  int funcIndex = 2;

  GLenum target = query->GetTarget();
  if (lua_israwnumber(L, funcIndex)) {
    target = (GLenum)lua_toint(L, funcIndex);
    funcIndex++;
  }

  luaL_checktype(L, funcIndex, LUA_TFUNCTION);

  running = true;
  glBeginQuery(target, query->GetID());
  const int top = lua_gettop(L);
  const int error = lua_pcall(L, top - funcIndex, LUA_MULTRET, 0);
  glEndQuery(target);
  running = false;

  if (error != 0) {
    LuaLog(1, "gl.RunQuery: error(%i) = %s", error, lua_tostring(L, -1));
    lua_error(L);
  }

  return lua_gettop(L) - (funcIndex - 1);
}


int LuaGLQueryMgr::GetQuery(lua_State* L) {