Hi
Quoted from the archives :
"i’m guessing you’re running windows? in any event SDL doesn’t
do hardware surfaces for windowed displays. :[ "
Apparently, the flag SDL_HWSURFACE is only handled in full screen mode.
Is there a reason for that ? With DirectX it IS possible to use
harware blitting in windowed mode,
and the perfomances are obviously much better .
Is someone working on that, or do you need help ?
renaud
-----Oorspronkelijk bericht-----
Van: renaud at envivio.com [mailto:renaud at envivio.com]
Verzonden: maandag 24 september 2001 12:09
Aan: sdl at libsdl.org
Onderwerp: [SDL] win32 questionHi
Quoted from the archives :
"i’m guessing you’re running windows? in any event SDL doesn’t
do hardware surfaces for windowed displays. :[ "Apparently, the flag SDL_HWSURFACE is only handled in full
screen mode.
Is there a reason for that ? With DirectX it IS possible to use
harware blitting in windowed mode,
and the perfomances are obviously much better .
Is someone working on that, or do you need help ?
Well, it seems a bit strange but I got it the other way around.
In windowed mode I can simply use SDL_HWSURFACE and this goes
very nicely.
In fullscreen however I must choose SDL_SWSURFCACE | SDL_FULLSCREEN
otherwise my programm crashes, at least with Cygwin as development
suite.
For I can tell, DirectX is only used in fullscreenmode. In windowed mode
SDL uses the GDI interface (at least this was the case in the 1.1.x
branche).
renaud
Regards,
Niels Wagenaar
Well, it seems a bit strange but I got it the other way around.
In windowed mode I can simply use SDL_HWSURFACE and this goes
very nicely.
Are you actually getting SDL_HWSURFACE in the returned surface flags?
See ya,
-Sam Lantinga, Software Engineer, Blizzard Entertainment
In fullscreen however I must choose SDL_SWSURFCACE | SDL_FULLSCREEN
otherwise my programm crashes, at least with Cygwin as development
suite.
You’re probably not respecting the hardware pitch value and/or not
locking the surfaces when you need to.
For I can tell, DirectX is only used in fullscreenmode. In windowed mode
SDL uses the GDI interface (at least this was the case in the 1.1.x
branche).
Nope, DirectX is used for both windowed and fullscreen modes.
See ya,
-Sam Lantinga, Software Engineer, Blizzard Entertainment