Hello Mark,
as far I remember I ran into the same issue. The problem was with the
NSOpenGLPFAFullScreen attribute, it failed some graphics cards. An other point
is, some older cards and the Intel ones only have 24bpp depth buffer, so maybe
this could be an other problem?
Cheers,
Tamas
On Aug 23, 2012, at 8:14 AM, Mark Coniglio <m...@troikatronix.com> wrote:
> My software "adopts" qtz files as plugins using QCRenderer. At startup, I
> must create anNSOpenGLContext so that I can get information about the
> plugins, i.e., the parameter names, etc.
>
> But I'm receiving a handful of bug reports where the creation of the pixel
> format for the context fails -- this is when calling NSOpenGLPixelFormat.
> Problem is, I can't recreate this bug on any computer in my possession.
>
> (This happens only on Lion; I have no bug reports for Snow Leopard on this.)
>
> The code is pretty simple, and taken from Apple examples:
>
> static NSOpenGLPixelFormatAttribute sOpenGLAttributes[] = {
> NSOpenGLPFANoRecovery,
> NSOpenGLPFAAccelerated,
> NSOpenGLPFADoubleBuffer,
> NSOpenGLPFAFullScreen,
> NSOpenGLPFAScreenMask,
> (NSOpenGLPixelFormatAttribute)CGDisplayIDToOpenGLDisplayMask(kCGDirectMainDisplay),
> NSOpenGLPFADepthSize, (NSOpenGLPixelFormatAttribute) 32,
> (NSOpenGLPixelFormatAttribute) 0
> };
>
> mQCFormat = [[NSOpenGLPixelFormat alloc]
> initWithAttributes:sOpenGLAttributes];
>
> Can anyone tell me why this might be failing? Obviously, I've got a "no
> recovery" in there so if the system can't create the format, I got nuthin'.
>
> Is NSOpenGLPFAFullScreen the problem?
>
> Thanks in advance for any insights.
>
> Best Wishes,
> Mark
> --
> =======================================================================
> Mark Coniglio | m...@troikatronix.com
> TroikaTronix | http://www.troikatronix.com/
> Isadora® | http://www.troikatronix.com/isadora.html
> | (interactive media processing environment)
> =======================================================================
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