SDL_Renderer* renderer = SDL_CreateSoftwareRenderer(canvas);

    SDL_SetRenderDrawColor(renderer, (color & 0xFF000000) >> 24, (color & 0x00FF0000) >> 16, (color & 0x0000FF00) >> 8, (color & 0x000000FF));
    SDL_RenderDrawLine(renderer, x1, y1, x2, y2);
    SDL_RenderPresent(renderer);