+void
+apply_filter_to_surface(SDL_Surface* surface, int filter, Color color)
+{
+if(filter == MASK_FILTER)
+ {
+ Uint8 r,g,b,a;
+ SDL_Rect rect;
+ rect.w = rect.h = 1;
+ SDL_LockSurface(surface);
+ for(int x = 0; x < surface->w; x++)
+ for(int y = 0; y < surface->h; y++)
+ {
+// SDL_LockSurface(surface);
+ SDL_GetRGBA(getpixel(surface,x,y), surface->format, &r,&g,&b,&a);
+// SDL_UnlockSurface(surface);
+ if(a != 0)
+ {
+ putpixel(surface, x,y, color.map_rgba(surface));
+// rect.x = x; rect.y = y;
+// SDL_FillRect(surface, &rect, color.map_rgba(surface));
+ }
+ }
+ SDL_UnlockSurface(surface);
+ }
+}
+