DGA Segfault

[Paul]

Hi

I’m just trying to get my programme to use DGA with the XFree86 4.0.3 nv
driver so I can use a proper hardware SDL_Flip() and to speed up blitting. I
have run the dga test application that comes with X and it works fine, so I
assume dga is set up OK. Setting SDL_VIDEODRIVER=dga also works as I check
the video info settings before setting the video mode and that reports lots
of nice hardware goodies it can use compared to the X11 software
everything

However, my programme crashes with the standard SDL Parachute SEGFAULT signal
handler when I issue the SDL_SetVideoMode function as below:

screen=SDL_SetVideoMode(800,600, 16, SDL_FULLSCREEN | SDL_HWSURFACE |
SDL_DOUBLEBUF );

Have I forgotten anything? I run the application as root and AFAIK that’s
all I need to do.

PS: Does smpeg use the vsync of DGA or does XVideo not use this?

Any comments would be greatly appreciated!

Thanks, Paul.

[Paul]

Hi

Fixed it, upgraded to 1.2.3.

Paul.On Fri, 23 Nov 2001 14:56, you wrote:

Hi

I’m just trying to get my programme to use DGA with the XFree86 4.0.3 nv
driver so I can use a proper hardware SDL_Flip() and to speed up blitting.
I have run the dga test application that comes with X and it works fine, so
I assume dga is set up OK. Setting SDL_VIDEODRIVER=dga also works as I
check the video info settings before setting the video mode and that
reports lots of nice hardware goodies it can use compared to the X11
software everything

However, my programme crashes with the standard SDL Parachute SEGFAULT
signal handler when I issue the SDL_SetVideoMode function as below:

screen=SDL_SetVideoMode(800,600, 16, SDL_FULLSCREEN | SDL_HWSURFACE |
SDL_DOUBLEBUF );

Have I forgotten anything? I run the application as root and AFAIK that’s
all I need to do.

PS: Does smpeg use the vsync of DGA or does XVideo not use this?

Any comments would be greatly appreciated!

Thanks, Paul.

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