Add SDL_LoadSurface and SDL_LoadSurface_IO (#14374)

test/testcustomcursor.c

@@ -111,7 +111,7 @@ static const char *cross[] = {
 
 static SDL_Surface *load_image_file(const char *file)
 {
-    SDL_Surface *surface = SDL_strstr(file, ".png") ? SDL_LoadPNG(file) : SDL_LoadBMP(file);
+    SDL_Surface *surface = SDL_LoadSurface(file);
     if (surface) {
         if (SDL_GetSurfacePalette(surface)) {
             const Uint8 bpp = SDL_BITSPERPIXEL(surface->format);

test/testshape.c

@@ -54,7 +54,7 @@ int main(int argc, char *argv[])
     }
 
     if (image_file) {
-        shape = SDL_strstr(image_file, ".png") ? SDL_LoadPNG(image_file) : SDL_LoadBMP(image_file);
+        shape = SDL_LoadSurface(image_file);
         if (!shape) {
             SDL_Log("Couldn't load %s: %s", image_file, SDL_GetError());
             goto quit;

test/testutils.c

@@ -84,7 +84,7 @@ SDL_Texture *LoadTexture(SDL_Renderer *renderer, const char *file, bool transpar
         file = path;
     }
 
-    temp = SDL_strstr(file, ".png") ? SDL_LoadPNG(file) : SDL_LoadBMP(file);
+    temp = SDL_LoadSurface(file);
     if (!temp) {
         SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't load %s: %s", file, SDL_GetError());
     } else {