hi cameron, i saw stuff like that when i did animation with graphics2D a while ago. the smear-effect comes from updating the position of the moving object indepently of the drawing. Lets say the animation decides to put the circle at x,y. it calls repaint(), which queues the request with a current dirty rectangle. Then, before the pixels are updated, the position of the circle is changed again. Then, when it is time for screen-update, the area of the original request and the current position dont match - that leaves some pixel from the previous paint. (the background of the remainders isnt repainted because it isnt considered dirty). The effect should be different, when the code is executed ( 'executed' - word of the day...) on a single or multi-core cpu. i suspect a problem deep in the repaint-stuff: on my todo-list i have some strange rendering effects from script-generated animations. the thing to investigate is not a smear-effect, but it seems, that the last update is not painted (the script stops when done and somehow prevents the last repaint or update). The way i try to debug this is 'unusual': this worked long ago. So i get older versions from svn to find that delta, which introduced the problem.. Seems, regard was/is not used too often. But thats for next year - which is quickly approaching. Happy New Year dieter
----- Original Message ----- From: "Cameron McCormack" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Friday, December 29, 2006 1:45 AM Subject: Re: One pixel high rendering anomaly > I think the same problem occurs on this test file: > > http://www.w3.org/Graphics/SVG/Test/20061213/svg/animate-elem-33-t.svg > > but here it’s much more obvious: > > http://arc.mcc.id.au/temp/2006/render2.png > > The left few pixels of the circle at the many animation ticks in the top > left shouldn’t be there. Also, in the other three parts of the test, > the red circle still should only be displayed at the rightmost position. > > -- > Cameron McCormack, http://mcc.id.au/ > xmpp:[EMAIL PROTECTED] ▪ ICQ 26955922 ▪ MSN [EMAIL PROTECTED] > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
