SDL ttf question

Re: SDL ttf question

Slappy — Tue, 04 Aug 2009 15:51:33 +0200

Quote
scanff
The only thing different I do in my projects is initialize SDL to 24bit. I've never tried TTF with 16bit.

I am initializing SDL with 16bit but there is no difference in this with 24bits

Problem is that you estinguish Wii's memory and SDL cannot load aditional data

I made this func:

bool ReloadImage(SDL_Surface* &imageSurface, char* fileName)
{
	SDL_FreeSurface(imageSurface); // free surface if it is not NULL
	imageSurface = NULL;
	imageSurface = load_image(fileName); // load new image - function from SDL tutorial
	return imageSurface == NULL ? false : true;
}

Re: SDL ttf question

scanff — Mon, 27 Jul 2009 19:10:01 +0200

Quote
henke37
A quick google on the function quickly explains that it returns a pointer to a new surface. And the surface is not freed for you. And you are not freeing it either. That's what I call an obvious memory leak.

lol, how did I miss that, nice catch. After looking over my coded I noticed I am calling SDL_FreeSurface (luckily)

Re: SDL ttf question

andersers — Mon, 27 Jul 2009 19:05:21 +0200

It seems that you are right ekeeke and henke37. I added

if(scoret){SDL_FreeSurface(scoret);}

in the loop just before the rendering, and now SDL makes no errors :-)

Thank you very much to you all!

By the way, before i read your solution i made my own system that can write 3 digit numbers to the screen. What a waste of time :-P At least it was fun writing, hehe.

Re: SDL ttf question

henke37 — Mon, 27 Jul 2009 18:43:01 +0200

A quick google on the function quickly explains that it returns a pointer to a new surface. And the surface is not freed for you. And you are not freeing it either. That's what I call an obvious memory leak.

Re: SDL ttf question

ekeeke — Mon, 27 Jul 2009 18:42:32 +0200

scoret is a SDL_Surface pointer which obviously is allocated when you call the TTF_ function
from what I remember, SDL surfaces are internally allocated using SDL_CreateRGBSurface (former SDL_AllocSurface) which itself do some malloc (s)
Obviously, if you are calling this in a loop without freeing the surface, you will most likely run out of memory sooner or later. This is probably what's happening here

Re: SDL ttf question

scanff — Mon, 27 Jul 2009 18:13:22 +0200

I'm not sure what the issue is. Unless there's a leak I'm not seeing your code should be working fine.

My only other suggestion would be to use the latest SVN SDL version (that's what I use). It just means you'll have to get and build the libogc SVN, replace the libraries in the libogc dir with the new ones, get the SDL SVN build that and replace the SDL libs.

Re: SDL ttf question

andersers — Mon, 27 Jul 2009 00:29:36 +0200

by "initialize SDL to 24bit" you mean the bitsperpixel in SDL_SetVideoMode, right?

I tried changing the value to 24, but it still fails.

Re: SDL ttf question

scanff — Mon, 27 Jul 2009 00:20:25 +0200

The only thing different I do in my projects is initialize SDL to 24bit. I've never tried TTF with 16bit.

Re: SDL ttf question

andersers — Sun, 26 Jul 2009 23:48:56 +0200

I'm using sdl version

Quote

http://sdl-wii.googlecode.com/files/SDL%20Wii%2005-13-2009.zip

http://sdl-wii.googlecode.com/files/SDL%20Wii%2005-13-2009.zip
05-13-2009

TTF_RenderText_Blended( font, buffer, textColor );

gives the same error.

Re: SDL ttf question

scanff — Sun, 26 Jul 2009 23:17:37 +0200

Strange, it does not look like memory is leaking. I've used TTF_RenderText_Blended before and there does not seem any problems with it. Try :

scoret = 0;
scoret = TTF_RenderText_Blended( font, buffer, textColor );
if (scoret) apply_surface( 200, 20, scoret, screen );

Also what SDL version are you using?

Re: SDL ttf question

henke37 — Sun, 26 Jul 2009 23:08:44 +0200

Obviously there is a memory leak somewhere. I don't know the API, but to me it looks like you keep getting handles/pointers from TTF_RenderText_Solid, but you are never releasing them.

Re: SDL ttf question

andersers — Sun, 26 Jul 2009 22:20:40 +0200

Thank you very much, it helped somewhat. Now SDL only writes

Quote

SDL_SetError: Out of memory

Re: SDL ttf question

scanff — Sun, 26 Jul 2009 22:01:29 +0200

Probably done nothing wrong. But don't rely on a surface to be created, it can sometimes fail. Try this :


scoret = 0;
scoret = TTF_RenderText_Solid( font, buffer, textColor );
if (scoret) apply_surface( 200, 20, scoret, screen );

SDL ttf question

andersers — Sun, 26 Jul 2009 21:11:47 +0200

Hi

I have made a simple application, that counts how many times you press the A button, and writes it on the TV using sdl and sdl_ttf . Unfortunetly it only works for about 3 minutes, then SDL writes:

Quote

SDL_SetError: Out of memory
SDL_SetError: SDL_UpperBlit: passed a NULL surface

Read source here

I would like to know what I have done wrong.

Thank you