SDL2 memory leaks on SDL_DestroyRenderer

Question

This code will explain the plot:

// on init:

m_mainWindow = SDL_CreateWindow("title", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 480, 640, SDL_WINDOW_SHOWN);
m_mainRenderer = SDL_CreateRenderer(m_mainWindow, -1, 0); // + 8 Mb of memory

// on screen resize when my ios sends SDL_WINDOWRESIZED:
SDL_DestroyRenderer(m_mainRenderer); // - 1!!! Mb of memory

m_mainRenderer = SDL_CreateRenderer(m_mainWindow, -1, 0); // + 6 Mb of memory

I can't fully destroy renderer and clear memory of it. why? and what I did wrong here?

Answer 1

You don't need to create a Renderer at each Resize, your renderer size will be updated automatically... Basically, you can do everything in your software with ONLY ONE renderer. By the way, the SDL_Renderer doesn't contains dimension attributes, the windows contains it and the SDL_Renderer is linked to that Window