+void YuvPlayer::drawGrid()
+{
+// cout << "drawGrid" << endl;
+// SDL_RenderClear(renderer);
+// SDL_SetRenderDrawColor(renderer, 255, 255, 255, SDL_ALPHA_OPAQUE);
+//
+// if(SDL_RenderDrawLine(renderer, 10, 10, 200, 200) == -1){
+// cout << "draw line error" << endl;
+// }
+// SDL_RenderCopy(renderer, texture, nullptr, nullptr);
+// SDL_RenderPresent(renderer);
+
+// SDL_UpdateTexture(texture, nullptr, raw, width * SDL_BYTESPERPIXEL(SDL_PIXELFORMAT_IYUV));
+ SDL_RenderClear(renderer);
+ SDL_RenderCopy(renderer, texture, nullptr, nullptr);
+ SDL_RenderPresent(renderer);
+}
+
+