Getting Tv-out To Work With Sdl (open2x Prebuilt, Sw Surfaces)

[Alex.]

Hi,

I don't have a TV-out cable myself, however someone in a thread told me that my game Sqdef does not work well in TV-out mode. I use the SDL libs from the Open2x site (DevKitGP2X), but somehow the image is displayed improperly. Is there a specific way I must initialize SDL in order to get it to work? Here's the code I use:

CODE
SDL_Init(SDL_INIT_JOYSTICK | SDL_INIT_VIDEO | SDL_INIT_TIMER);
SDL_Surface* screen = SDL_SetVideoMode(WIDTH, HEIGHT, BPP, SDL_SWSURFACE);
SDL_SetClipRect(screen, NULL);
SDL_ShowCursor(SDL_DISABLE);


Any help would be much appreciated, I'm sorry for not being able to provide more details.

 

[Hooka]

For a temporary fix, you could find out if this: http://wiki.gp2x.org/wiki/TV-Out_Fixer works... I've never run into this problem with my projects, but I've seen it fixed in programs before so there's probably someone who knows how to fix it

 

[JyCet]

Hi,

I don't have a TV-out cable myself, however someone in a thread told me that my game Sqdef does not work well in TV-out mode. I use the SDL libs from the Open2x site (DevKitGP2X), but somehow the image is displayed improperly.

I've never tested your excellent Sqdef on tv but is it a scaling problem ?
Artifact ? flikering ?
Is it on HD tv or classical CRT TV ?

Synchro ?
I saw you dont use double buffer so I suppose the synchro work correctly on TV

 

[Alex.]

For a temporary fix, you could find out if this: http://wiki.gp2x.org/wiki/TV-Out_Fixer works... I've never run into this problem with my projects, but I've seen it fixed in programs before so there's probably someone who knows how to fix it


If only there was some way to test this. I'll ask someone in the Sqdef thread to check again.

I've never tested your excellent Sqdef on tv but is it a scaling problem ?
Artifact ? flikering ?
Is it on HD tv or classical CRT TV ?

Synchro ?
I saw you dont use double buffer so I suppose the synchro work correctly on TV

I think only part of the image was displayed. And no double buffering is used, everything is standard stuff.

 

[YakumoFuji]

if you've done nothing to compensate, your being cut from overscan, 10-20% on vertical+horizontal.