An enumeration of flags that can be used in the flip parameter for SDL_RenderTextureRotated.
SDL_FLIP_NONE |
do not flip |
SDL_FLIP_HORIZONTAL |
flip horizontally |
SDL_FLIP_VERTICAL |
flip vertically |
/* casts may be necessary for some compiler settings or languages (e.g. C++) */
SDL_RendererFlip flip = SDL_FLIP_HORIZONTAL | SDL_FLIP_VERTICAL;
SDL_RenderTextureRotated(renderer, texture, &srcrect, &dstrect, angle, ¢er, flip);
If you want to do a diagonal flip (both horizontal and vertical), use bitwise or ('|' operator).