All, I had tried to create this attached to an OpenGLContext, but apparently didn't do it right. I found the answer at: http://developer.casgrain.com/?p=4
Problem solved. Eric On Apr 10, 2010, at 6:56 PM, Eric Smith wrote: > 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 > > _______________________________________________ > > Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) > > Please do not post admin requests or moderator comments to the list. > Contact the moderators at cocoa-dev-admins(at)lists.apple.com > > Help/Unsubscribe/Update your Subscription: > http://lists.apple.com/mailman/options/cocoa-dev/eric_h_smith%40mac.com > > This email sent to eric_h_sm...@mac.com _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
