Changing GFX card

SDL Development
1

If I got two video cards, is there anyway using SDL to select which of
both I want to use to render?

2

Not at this time to my knowledge.On Sat, 2002-11-16 at 13:49, Santi Onta??n wrote:

If I got two video cards, is there anyway using SDL to select which of
both I want to use to render?

3

Actually, there is, technically, and no, it probably wont work on most systems.
Run the program in a window, drag the window to the other monitor’s desktop
(Assuming you can do that), and then switch to fullscreen. It should
fullscreen on that monitor, instead of the one it originally opened on.On 16-Nov-2002, DrEvil wrote:

On Sat, 2002-11-16 at 13:49, Santi Onta??n wrote:

If I got two video cards, is there anyway using SDL to select which of
both I want to use to render?

Not at this time to my knowledge.

SDL mailing list
SDL at libsdl.org
http://www.libsdl.org/mailman/listinfo/sdl

–
Patrick “Diablo-D3” McFarland || unknown at panax.com
“Computer games don’t affect kids; I mean if Pac-Man affected us as kids, we’d
all be running around in darkened rooms, munching magic pills and listening to
repetitive electronic music.” --Kristian Wilson, Nintendo, Inc, 1989
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4

The problem with the GFX cards doesn’t happen to me. It’s a friend of
mine who is trying to run one of my progams that use SDL+OpenGL and it
runs extremely slow on his machine. His configuration is:
ATI card + VooDoo 3D card

his ATI card doesn’t have any 3D acceleration, and he uses VooDoo only
as the 3D accelerator. The problem is that the VooDoo isn’t detected and
no hardware acceleration for OpenGL is used!!
Is it normal? Or have I to include some code in my application in order
to detect the VooDoo card?

Patrick McFarland wrote:>Actually, there is, technically, and no, it probably wont work on most systems.

Run the program in a window, drag the window to the other monitor’s desktop
(Assuming you can do that), and then switch to fullscreen. It should
fullscreen on that monitor, instead of the one it originally opened on.

On 16-Nov-2002, DrEvil wrote:

On Sat, 2002-11-16 at 13:49, Santi Onta??n wrote:

If I got two video cards, is there anyway using SDL to select which of
both I want to use to render?

Not at this time to my knowledge.

SDL mailing list
SDL at libsdl.org
http://www.libsdl.org/mailman/listinfo/sdl

5

The problem with the GFX cards doesn’t happen to me. It’s a friend of
mine who is trying to run one of my progams that use SDL+OpenGL and it
runs extremely slow on his machine. His configuration is:
ATI card + VooDoo 3D card

his ATI card doesn’t have any 3D acceleration, and he uses VooDoo only
as the 3D accelerator. The problem is that the VooDoo isn’t detected and
no hardware acceleration for OpenGL is used!!
Is it normal? Or have I to include some code in my application in order
to detect the VooDoo card?

Are you running under Windows or Linux?

See ya,
-Sam Lantinga, Software Engineer, Blizzard Entertainment

6

If its a Voodoo 1 or 2 (not rush, banshee, or 3/4/5) it isnt a real “video
card” Its a seperate 3D accelerator you need to pair with a 2D card.

Maybe that is his prooblem.On 17-Nov-2002, Santi Onta??n wrote:

The problem with the GFX cards doesn’t happen to me. It’s a friend of
mine who is trying to run one of my progams that use SDL+OpenGL and it
runs extremely slow on his machine. His configuration is:
ATI card + VooDoo 3D card

his ATI card doesn’t have any 3D acceleration, and he uses VooDoo only
as the 3D accelerator. The problem is that the VooDoo isn’t detected and
no hardware acceleration for OpenGL is used!!
Is it normal? Or have I to include some code in my application in order
to detect the VooDoo card?

Patrick McFarland wrote:

Actually, there is, technically, and no, it probably wont work on most
systems.
Run the program in a window, drag the window to the other monitor’s desktop
(Assuming you can do that), and then switch to fullscreen. It should
fullscreen on that monitor, instead of the one it originally opened on.

On 16-Nov-2002, DrEvil wrote:

On Sat, 2002-11-16 at 13:49, Santi Onta??n wrote:

If I got two video cards, is there anyway using SDL to select which of
both I want to use to render?

Not at this time to my knowledge.

SDL mailing list
SDL at libsdl.org
http://www.libsdl.org/mailman/listinfo/sdl

SDL mailing list
SDL at libsdl.org
http://www.libsdl.org/mailman/listinfo/sdl

–
Patrick “Diablo-D3” McFarland || unknown at panax.com
“Computer games don’t affect kids; I mean if Pac-Man affected us as kids, we’d
all be running around in darkened rooms, munching magic pills and listening to
repetitive electronic music.” --Kristian Wilson, Nintendo, Inc, 1989
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7

Windows

8

If it’s less than a V3 then it will not attempt to accelerate windowed
displays - fullscreen acceleration only (I can’t remember if the V3
supported accelerated windowed rendering or not).

Additionally, if it is not a Voodoo3 or higher, I do not belive that a full
OpenGL ICD is available. You only get the “Quake Driver” (MCD), which does
not implement a large chunk of the OpenGL API.

The Voodoo3 series is also limited to accelerating only 16bpp visuals. Any
attempt to get a 32bpp visual will be in software.

Finally, in order to get that 16bpp visual, you should make sure the Windows
desktop is set to 16bpp color.

From the original description, it sounds like a Voodoo or Voodoo2 add-on
card. You’re most likely out of luck for hardware OpenGL on that system.
If it’s any consolation, the V2 primarily accelerated triangle rasterization
and a certain flavor of texturing. Great for its time, but that would have
been 5+ years ago… If you really need OpenGL on this system you might
look for a DirectX wrapper to get that little bit of HW acceleration.
Alternatively, Mesa 5.0 (software only, but a full 1.4 implementation) was
just released.

Have fun,
– Jeff

9

Jeff Duncan wrote:

If it’s less than a V3 then it will not attempt to accelerate windowed
displays - fullscreen acceleration only (I can’t remember if the V3
supported accelerated windowed rendering or not).

Additionally, if it is not a Voodoo3 or higher, I do not belive that a full
OpenGL ICD is available. You only get the “Quake Driver” (MCD), which does
not implement a large chunk of the OpenGL API.

The Voodoo3 series is also limited to accelerating only 16bpp visuals. Any
attempt to get a 32bpp visual will be in software.

Finally, in order to get that 16bpp visual, you should make sure the Windows
desktop is set to 16bpp color.

From the original description, it sounds like a Voodoo or Voodoo2 add-on
card. You’re most likely out of luck for hardware OpenGL on that system.
If it’s any consolation, the V2 primarily accelerated triangle rasterization
and a certain flavor of texturing. Great for its time, but that would have
been 5+ years ago… If you really need OpenGL on this system you might
look for a DirectX wrapper to get that little bit of HW acceleration.
Alternatively, Mesa 5.0 (software only, but a full 1.4 implementation) was
just released.

Have fun,
– Jeff

SDL mailing list
SDL at libsdl.org
http://www.libsdl.org/mailman/listinfo/sdl

Ok, thanks!
I think that was the information I needed