Function SDL_CreateRenderer

deps/SDL2/src/render/SDL_render.c:764–907

}

SDL_Renderer *
SDL_CreateRenderer(SDL_Window * window, int index, Uint32 flags)
{
#if !SDL_RENDER_DISABLED
    SDL_Renderer *renderer = NULL;
    int n = SDL_GetNumRenderDrivers();
    SDL_bool batching = SDL_TRUE;
    const char *hint;

#if defined(__ANDROID__)
    Android_ActivityMutex_Lock_Running();
#endif

    if (!window) {
        SDL_SetError("Invalid window");
        goto error;
    }

    if (SDL_GetRenderer(window)) {
        SDL_SetError("Renderer already associated with window");
        goto error;
    }

    if (SDL_GetHint(SDL_HINT_RENDER_VSYNC)) {
        if (SDL_GetHintBoolean(SDL_HINT_RENDER_VSYNC, SDL_TRUE)) {
            flags |= SDL_RENDERER_PRESENTVSYNC;
        } else {
            flags &= ~SDL_RENDERER_PRESENTVSYNC;
        }
    }

    if (index < 0) {
        hint = SDL_GetHint(SDL_HINT_RENDER_DRIVER);
        if (hint) {
            for (index = 0; index < n; ++index) {
                const SDL_RenderDriver *driver = render_drivers[index];

                if (SDL_strcasecmp(hint, driver->info.name) == 0) {
                    /* Create a new renderer instance */
                    renderer = driver->CreateRenderer(window, flags);
                    if (renderer) {
                        batching = SDL_FALSE;
                    }
                    break;
                }
            }
        }

        if (!renderer) {
            for (index = 0; index < n; ++index) {
                const SDL_RenderDriver *driver = render_drivers[index];

                if ((driver->info.flags & flags) == flags) {
                    /* Create a new renderer instance */
                    renderer = driver->CreateRenderer(window, flags);
                    if (renderer) {
                        /* Yay, we got one! */
                        break;