Intermittent flicker with visual effect dissolve
Posted: Sun Jun 02, 2013 4:41 pm
I am displaying text on a card that can be changed by pressing a button, and I use the "dissolve" effect when the text is changed.
I lock the screen for visual effect at the beginning of the handler that changes the text, then update the field on the card, and then unlock it with the visual effect.
Quite often this works well. But intermittently there is a flicker happening during the visual effect that is rather unpleasant.
It does not depend on the content, because sometimes it occurs when going back and forth between the same texts, and sometimes it doesn't.
It is irregular, sometimes it occurs at every second or third text change, sometimes it doesn't occur for 10 text changes.
It does't occur if I don't use QuickTime visual effects, but then the dissolve looks very ugly.
Any idea why that might happen and what I can do to resolve it?
Thanks!
I lock the screen for visual effect at the beginning of the handler that changes the text, then update the field on the card, and then unlock it with the visual effect.
Quite often this works well. But intermittently there is a flicker happening during the visual effect that is rather unpleasant.
It does not depend on the content, because sometimes it occurs when going back and forth between the same texts, and sometimes it doesn't.
It is irregular, sometimes it occurs at every second or third text change, sometimes it doesn't occur for 10 text changes.
It does't occur if I don't use QuickTime visual effects, but then the dissolve looks very ugly.
Any idea why that might happen and what I can do to resolve it?
Thanks!