Weird behavior in a NSOpenGLView and an ATI Rage Pro 128
Weird behavior in a NSOpenGLView and an ATI Rage Pro 128
- Subject: Weird behavior in a NSOpenGLView and an ATI Rage Pro 128
- From: email@hidden
- Date: Fri, 28 Jun 2002 21:27:00 +0200
May I introduce a nominee for the award of weirdest behavior in a
NSOpenGLView?
I'm porting a Windows OpenGL ScreenSaver.
I have set my OpenGLView with the following attributes:
NSOpenGLPixelFormatAttribute attribs[] =
{
NSOpenGLPFAAccelerated,
NSOpenGLPFAColorSize, (NSOpenGLPixelFormatAttribute)32,
NSOpenGLPFAClosestPolicy,
(NSOpenGLPixelFormatAttribute)0
};
NSOpenGLPixelFormat *format = [[[NSOpenGLPixelFormat alloc]
initWithAttributes:attribs] autorelease];
In the Preview frame, I sometimes get a really weird behavior:
The drawing are drawn in black and white.
If I launch Mail.app and compose a new mail, each time the insertion
cursor is drawn, the drawings in the OpenGL view are in color, when the
insertion cursor is hidden, the drawings are in black and white.
Same paranormal phenomenon when I browse the Dock.
Other strange phenomenon, part of the NSOpenGLView is drawn in Green
when the shadow of a window overlaps it.
What kind of stupid thing from my part could lead to this kind of
behavior?
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