SDL fill screen with image?

[Dy7SLyTq]

so im trying to make a background for a menu, but it is only so big. its not the kind of picture where i can just reapply it. is there a function to make it fill to the screen?

[Peter87]

You mean stretch the image to take up more pixels? There is no build in SDL function to do it but you can always write your own, or use a library like SDL_gfx or SPriG.

http://www.ferzkopp.net/joomla/content/view/19/14/
http://code.bluedinosaurs.com/lib/sprig/#Download

[Dy7SLyTq]

how would i write my own?

[TinyTeeTree]

first off create a surface to fill your screen, lets say

SDL_Surface * newSurface = SDL_CreateRGBSurface(SCREEN_WIDTH,SCREEN_HEIGHT,SCREEN_BPP,FLAGS);

then run on the pixels of the the new surface and blit to them pixel by pixel, (dunno of a more efficient way, well I do actually but that out of the scope).

for(int i=0; i<HEIGHT; ++i)
   for(int j=0; j<WIDTH; ++j){
      int oldX = ((float)j/WIDTH)*OLD_IMAGE_WIDTH;
      int oldY = ((float)i/HEIGHT)*OLD_IMAGE_HEIGHT;
      newSurface->pixels[i*WIDTH+j] = oldSurface->pixels[oldY*OLD_IMAGE_WIDTH+oldX];
   }

[Dy7SLyTq]

thanks. i figured it out. i found this small header/cpp file combo called SDL_Resize