I'm trying to use a Quartz Composer filter in a cocoa app. I've published
inputs and outputs: one image input, one image output. I can successfully set
the input image, but when I try to get the output image, I get 0x0.... no error
messages, just a null pointer.
Here's my code:
QCComposition* myComp = [QCComposition
compositionWithFile:@"/Users/esmith/Desktop/Simple.qtz"];
QCRenderer* myRenderer = [[QCRenderer alloc] initWithComposition:myComp
colorSpace:CGColorSpaceCreateWithName(kCGColorSpaceGenericRGB)];
NSBitmapImageRep* theRep = [[[NSBitmapImageRep alloc]
initWithCIImage:[ciImageRep CIImage]] autorelease];
BOOL isSet = [myRenderer setValue:theRep forInputKey:@"InputImage"];
NSBitmapImageRep* theOutput = [myRenderer valueForOutputKey:@"OutputImage"
ofType:@"Image"];
Am I missing a step where I tell the renderer to render? (PS, I've tried
renderattime:0, but it doesn't help).
Ideas?
Thanks,
Eric
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