Method present

src/OpenLoco/src/Graphics/SoftwareDrawingEngine.cpp:296–375

    }

    void SoftwareDrawingEngine::present()
    {
        // Lock the surface before setting its pixels
        if (SDL_MUSTLOCK(_screenSurface))
        {
            if (!SDL_LockSurface(_screenSurface))
            {
                return;
            }
        }

        // Copy pixels from the virtual screen buffer to the surface
        auto& rt = getScreenRT();
        if (rt.bits != nullptr)
        {
            std::memcpy(_screenSurface->pixels, rt.bits, _screenSurface->pitch * _screenSurface->h);
        }

        // Unlock the surface
        if (SDL_MUSTLOCK(_screenSurface))
        {
            SDL_UnlockSurface(_screenSurface);
        }

        // Convert colours via palette mapping onto the RGBA surface.
        if (!SDL_BlitSurface(_screenSurface, nullptr, _screenRGBASurface, nullptr))
        {
            Logging::error("SDL_BlitSurface {}", SDL_GetError());
            return;
        }

        // Copy the RGBA pixels into screen texture.
        if (!SDL_UpdateTexture(_screenTexture, nullptr, _screenRGBASurface->pixels, _screenRGBASurface->pitch))
        {
            Logging::error("SDL_UpdateTexture {}", SDL_GetError());
            return;
        }

        const auto scaleFactor = Config::get().scaleFactor;
        if (scaleFactor > 1.0f)
        {
            // Copy screen texture to the scaled texture.
            if (!SDL_SetRenderTarget(_renderer, _scaledScreenTexture))
            {
                Logging::error("SDL_SetRenderTarget (_scaledScreenTexture) failed: {}", SDL_GetError());
                return;
            }
            if (!SDL_RenderTexture(_renderer, _screenTexture, nullptr, nullptr))
            {
                Logging::error("SDL_RenderTexture (_screenTexture) failed: {}", SDL_GetError());
                return;
            }

            // Copy scaled texture to primary render target.
            if (!SDL_SetRenderTarget(_renderer, nullptr))
            {
                Logging::error("SDL_SetRenderTarget (nullptr) failed: {}", SDL_GetError());
                return;