[Meneldil]

I'm trying to bind the OpenGL context to the full screen, but I'm not able to because I'm unable to set NSOpenGLPFAFullScreen in the pixel format. According to Apple's Dev Center, this means my computer can't do fullscreen OpenGL. The OpenGL Info utility says that I can though, and I'd hope that it can. I have a 12" powerbook running 10.2.8.

Here is the relevant code:

Trying to set the pixel format--

- (NSOpenGLPixelFormat *) createPixelFormat;
{
NSOpenGLPixelFormatAttribute *attributes[] =
{
NSOpenGLPFADoubleBuffer,
NSOpenGLPFADepthSize, 32,
NSOpenGLPFAFullScreen,
nil
}; //Creates an array of attributes to be passed to NSOpenGLPixelFormat.

NSOpenGLPixelFormat *pixelFormat = [[NSOpenGLPixelFormat alloc] initWithAttributes:attributes];

if ( pixelFormat == nil ) {
NSLog( @"Failed to create pixel format." );
}; //Checks to make sure that the pixel format was created.

return pixelFormat;
}

If NSOpenGLPFAFullScreen is included in the array, creating the pixel format fails. If I take it out, it succeeds. I apparently need to declare it as an attribute if I want to bind to the full screen, so I'd like to figure this out.

Here's the Dev Center link.
http://developer.apple.com/documenta...00463/CJBBIAGG

[arekkusu]

You need to do two things.

First, on a laptop, you must specify _which screen_ to go fullscreen on. Even if you don't have a second display connected (svideo/vga/dvi), the system treats your machine as having two virtual screens. (desktop developers take note! test your code on laptops!)

This is pretty easy, add this to your pixel format:

NSOpenGLPFAScreenMask,
CGDisplayIDToOpenGLDisplayMask(display),

where "display" is the CGDisplay ID, which can just be CGMainDisplayID() for the display with the menu bar, or you can get fancy with i.e. CGGetDisplaysWithRect() to choose the display where your window is located.



Secondly, you should also add:

NSOpenGLPFANoRecovery,

This one might be optional for the simple fullscreen case, but if you do anything more complex, like trying to share windowed and fullscreen contexts, then you need it.

[Meneldil]

Thank you! I can now apparently create a pixel format. Now for the next error the hateful compiler keeps giving me.

2003-11-06 02:18:09.601 example[1701] First line of initGL.
2003-11-06 02:18:09.700 example[1701] Created an OpenGL context.
2003-11-06 02:18:09.703 example[1701] *** -[NSOpenGLContext cglContext]: selector not recognized
2003-11-06 02:18:09.734 example[1701] Exception raised during posting of notification. Ignored. exception: *** -[NSOpenGLContext cglContext]: selector not recognized

example has exited with status 0.

This is apparently caused by the third line in this block of code, based on the selective application of NSLog statements and looking at the errors.

CGLContextObj cglContext;
CGLError error;
cglContext = [context cglContext];
error = CGLSetFullScreen(cglContext);

This is the way the Omnigroup example does it, and that code works on my machine. The 'NSOpenGLContext *context' seems to have been successfully created.

If anyone has a quick answer, let me know, but at least this time I have a better idea what the problem is.

[Meneldil]

I seemed to have fixed it. Even though it works in the Omni code, changing all of the context creation stuff from NS* to CGL* makes it work.

[arekkusu]

The way to do it with NSOpenGLContext is [ctx setFullScreen]. Don't forget to capture the display before going fullscreen and release it afterwards otherwise other applications get their windows moved around, which is really annoying.

[Meneldil]

Originally posted by arekkusu:
The way to do it with NSOpenGLContext is [ctx setFullScreen]. Don't forget to capture the display before going fullscreen and release it afterwards otherwise other applications get their windows moved around, which is really annoying.

Thanks again! All the OpenGL stuff is working perfectly now.