Method InitDrawDone

engine/Poseidon/Graphics/Core/Engine.hpp:377–377

swap frames - get ready for next frame

    virtual void DrawTestPattern(const char* /*name*/) {} // Harness-only: draw named test pattern
    virtual void NextFrame();                             // swap frames - get ready for next frame
    virtual bool InitDrawDone() { return true; }
    void Pause() override = 0;   // stop and prepare everything for GDI
    void Restore() override = 0; // restore after minimized - before app goes to fullscreen
    virtual void StopAll() {}    // stop all background activity - used before termination