I have just reported a problem to apple's bug reporter <rdar://
5565851> about a problem I'm having with code that renders a frame of
a QC to an image using QCRenderer, adapted from some code that Pierre
posted here a long time ago.
What's happening is that some code that works fine under Tiger and on
some machines running Leopard (like my G5), it's failing miserably on
a MacBookPro and a 20" iMac. The resulting image is generally
invisible (or nearly so) or has its colors shifted strangely.
Has something in the architecture changed that maybe I need to work
around? I want to make sure that if it's not a bug, that there is
some workaround...
Otherwise I hope this can be fixed for 10.5.1 :-)
Here are some snippets to show you approximately what I'm doing. (The
bug report, for Apple folks, does have a full test project and
positive/negative examples.)
NSOpenGLPixelFormatAttribute attributes[] = {
NSOpenGLPFAAccelerated,
NSOpenGLPFANoRecovery,
(NSOpenGLPixelFormatAttribute)0
};
NSOpenGLPixelFormat* format = [[NSOpenGLPixelFormat alloc]
initWithAttributes:attributes];
NSOpenGLContext* context = [[NSOpenGLContext alloc]
initWithFormat:format shareContext:nil];
CGLContextObj cgl_ctx = [context CGLContextObj];
if(cgl_ctx)
{
glViewport(0, 0, width, height);
}
QCRenderer* renderer = [[QCRenderer alloc]
initWithOpenGLContext:context pixelFormat:format file:aFileName];
.... followed by ....
BOOL renderSuccess = [renderer renderAtTime:0.0 arguments:nil];
...
id image = [myRenderer valueForOutputKey:@"Image"];
--
Dan Wood
[EMAIL PROTECTED]
Karelia Software — Sandvox for the Mac
http://www.karelia.com/
"A nation of sheep will beget a government of wolves" – Edward R. Murrow
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