SDL_SetSurfaceAlphaMod can set alpha degree, but it seems effective only for image render, not the image itself.
I need to change the alpha degree for image and save the image to disk.
Thanks
SDL_SetSurfaceAlphaMod can set alpha degree, but it seems effective only for image render, not the image itself.
I need to change the alpha degree for image and save the image to disk.
Thanks
You could always render to a new surface (after setting the alpha value) and then save it.