Dingoonity.org

Sorry for my bad english. I'm russian)
(Warning! Google translate!)
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Hi all. I make a port of the game Open Syobon Action for Dingux. Although everything works fine (sound, buttons, screen ...), but the screen resolution remains the standard. I've tried everything - nothing worked. Help please!
Compiled from Cygwin.

Part with video initialisation:
/* Initialise SDL Video */

if (SDL_Init(SDL_INIT_VIDEO) < 0)
{
printf("Could not initialize SDL: %s\n", SDL_GetError());

exit(1);
}


screen = SDL_SetVideoMode(320, 240, 32, SDL_SWSURFACE|SDL_FULLSCREEN);

if (screen == NULL)
{
printf("Couldn't set screen mode to 320 x 240: %s\n", SDL_GetError());

exit(1);
}

If anyone wants to - make video with game work.

With 16bit lost transparency. With 32bit all works fine.

About surface. Dingux does not perceive surface (and i don't know why!)
If needed, i can share the sources, but code is so bad(( (Yeap, i'm noob!)

It may be worth hanging on IRC, http://webchat.freenode.net/?channels=dingoonity

So what resolution the game used originally?

It appears that location of all graphics is hardcoded to use the original resolution. If you want the game to fit 320x240 Dingoo screen, you have to downscale it. Add a new SDL_Surface (make sure it has 32bit depth and same resolution as the game had originally). Next find the main drawing routine, make it draw stuff on that surface instead of your screen surface. Then downscale that temporary surface to 320x240 and draw it on screen surface.

It may be worth hanging on IRC, http://webchat.freenode.net/?channels=dingoonity

And that is a good tip.

In fact it'll be easier to name the temporary surface screen (like ho the actual screen surface is named now). This way there will be less code to change.

I wrote a quick (written quickly rather than working fast) and dirty downscaler for the game, which seems to work (I get the image on screen), but for some reason the game hangs (sort off). That is I can still quit it with select.

http://www.mediafire.com/?ppsn1e8wzndcdzh

I try: change resolution, change bits per pixels, change flags, change core clock, add and delete SDL_DOUBLEBUF,SDL_SWSURFACE , SDL_HWSURFACE, SDL_FULLSCREEN , add palete.
Nothing! 
Any ideas?

By the way. Sound is working very fine, without lags. Buttons too. I delete video initialisation, but game already work!

Changing the resolution of the screen doesn't automatically scale the game.
If the original game runs in 480x420, it means you'd have to scale the screen output to 320x240.
So far you've set the screen surface to 320x240, but the rest of the game still tries to draw off screen into the original 480x420.
Edit:
Oh, I see you've used the scaler. It is slow because the game first renders to 480x420 and then software scales the whole thing to 320x240. Software scaling will always be slow. Another thing you could do is to resize all the graphics and modify the code and change all the appropriate variables to work with the scaled graphics.

I wrote a faster downscaler now it works ok (though the image isn't all that good).

Here it is:
http://www.mediafire.com/?hstmtud9g45cx

You can post it in release section, or should I do it?