<Swing Dev> JDK-8178091 : Bug I will workin on

[Patrick Chen]

OK ,
So I did severals tests with theses options with programms using full
repaint() method
,and it still work well,
but occasionnaly ,the lag is here again ,particularly when there are a lot
component on the screen (Jpanel screen)

indeed , I think it is not normal that we need theses options to work well ,
but it seem the problem does not come from Swing package , but repaint()
method in AWT package ,

2017-04-12 21:26 GMT+02:00 Patrick Chen <chen.j.patrick at gmail.com>:

> OK ,
> So I did severals tests with theses options with programms using full
> repaint() method
> ,and it still work well,
> but occasionnaly ,the lag is here again ,particularly when there are a lot
> component on the screen (Jpanel screen)
>
> indeed , I think it is not normal that we need theses options to work well
> ,
> but it seem the problem does not come from Swing package , but repaint()
> method in AWT package ,
>
>
>
> 2017-04-11 19:18 GMT+02:00 Sergey Bylokhov <sergey.bylokhov at oracle.com>:
>
>>
>> Hi ,
>> yes ;
>> with theses options it works !
>> but what that means ?
>>
>>
>> Is it works in case of any options or in some cases it does not work?
>> Please double check.
>>
>>
>> so it not a bug ?
>>
>> 2017-04-11 18:46 GMT+02:00 Sergey Bylokhov <sergey.bylokhov at oracle.com>:
>>
>>> Hi, Patrick.
>>> Can you please run the code using these options:
>>> -Dsun.java2d.xrender=true
>>> -Dsun.java2d.xrender=false
>>> -Dsun.java2d.opengl=true
>>> -Dsun.java2d.opengl=false
>>>
>>>
>>>
>>> After tests it seems that the problem doesn't come from Timer , but
>>> the repaint() method ,
>>>
>>>
>>> even with this code the bug is here.
>>> the bug is on Linux.
>>>
>>> 2017-04-11 11:07 GMT+02:00 Walter Laan <WLaan at costengineering.eu>:
>>>
>>>> Note that the example code in JDK-8178091 sleeps on the EDT, so you’re
>>>> lucky it paints at all instead of hanging the UI.
>>>>
>>>>
>>>>
>>>> It looks like you adapted the code from http://codereview.stackexchang
>>>> e.com/questions/29630/simple-java-animation-with-swing where no-one
>>>> experienced with Swing pointed out this error L.
>>>>
>>>>
>>>>
>>>> Using a javax.swing.Timer (not the java.util.Timer!) and it runs okay
>>>> (using Win10, Java 8u101):
>>>>
>>>>
>>>>
>>>>     *private* *void* go() {
>>>>
>>>>
>>>>
>>>>         *new* Timer(10, *new* ActionListener() {
>>>>
>>>>             // *Les* *coordonnées* *de* *départ* *de* *notre* *rond*
>>>>
>>>>             *private* *int* x = pan.getPosX(), y = pan.getPosY();
>>>>
>>>>             // *Le* *booléen* pour *savoir* *si* l'on *recule* *ou*
>>>> non *sur* l'axe x
>>>>
>>>>             *private* *boolean* backX = *false*;
>>>>
>>>>             // *Le* *booléen* pour *savoir* *si* l'on *recule* *ou*
>>>> non *sur* l'axe y
>>>>
>>>>             *private* *boolean* backY = *false*;
>>>>
>>>>
>>>>
>>>>             @Override
>>>>
>>>>             *public* *void* actionPerformed(ActionEvent e) {
>>>>
>>>>                 // *Si* *la* *coordonnée* x est *inférieure* à 1, on
>>>> *avance*
>>>>
>>>>                 *if*(x < 1) {
>>>>
>>>>                     backX = *false*;
>>>>
>>>>                 }
>>>>
>>>>                 // *Si* *la* *coordonnée* x est *supérieure* à *la*
>>>> *taille* *du* *Panneau* *moins* *la* *taille* *du* *rond*, on *recule*
>>>>
>>>>                 *if*(x > pan.getWidth() - 50) {
>>>>
>>>>                     backX = *true*;
>>>>
>>>>                 }
>>>>
>>>>                 // *Idem* pour l'axe y
>>>>
>>>>                 *if*(y < 1) {
>>>>
>>>>                     backY = *false*;
>>>>
>>>>                 }
>>>>
>>>>                 *if*(y > pan.getHeight() - 50) {
>>>>
>>>>                     backY = *true*;
>>>>
>>>>                 }
>>>>
>>>>
>>>>
>>>>                 // *Si* on *avance*, on *incrémente* *la* *coordonnée*
>>>>
>>>>                 // backX est *un* *booléen*, *donc* !backX *revient* à
>>>> *écrire*
>>>>
>>>>                 // if (backX == false)
>>>>
>>>>                 *if*(!backX) {
>>>>
>>>>                     pan.setPosX(++x);
>>>>
>>>>                 // *Sinon*, on *décrémente*
>>>>
>>>>                 }
>>>>
>>>>                 *else* {
>>>>
>>>>                     pan.setPosX(--x);
>>>>
>>>>                 }
>>>>
>>>>                 // *Idem* pour l'axe Y
>>>>
>>>>                 *if*(!backY) {
>>>>
>>>>                     pan.setPosY(++y);
>>>>
>>>>                 }
>>>>
>>>>                 *else* {
>>>>
>>>>                     pan.setPosY(--y);
>>>>
>>>>                 }
>>>>
>>>>
>>>>
>>>>                 // On *redessine* *notre* *Panneau*
>>>>
>>>>                 pan.repaint();
>>>>
>>>>             }
>>>>
>>>>         }).start();
>>>>
>>>>     }
>>>>
>>>>
>>>>
>>>> Hope that helps,
>>>>
>>>> Walter.
>>>>
>>>>
>>>>
>>>> *From:* swing-dev [mailto:swing-dev-bounces at openjdk.java.net] *On
>>>> Behalf Of *Patrick Chen
>>>> *Sent:* maandag 10 april 2017 12:23
>>>> *To:* swing-dev at openjdk.java.net
>>>> *Subject:* Re: <Swing Dev> JDK-8178091 : Bug I will workin on
>>>>
>>>>
>>>>
>>>> (edit : for example this game coded in java :
>>>> https://github.com/cloudStrif/GoldenSunD will work with java 7
>>>>
>>>> but clearly not with java8 (linux 64 bits) because of lags)
>>>>
>>>>
>>>>
>>>> 2017-04-10 12:19 GMT+02:00 Patrick Chen <chen.j.patrick at gmail.com>:
>>>>
>>>> Hi every one ,
>>>>
>>>> just wanted to inform that I am working to fix this bug.
>>>>
>>>>
>>>>
>>>> it is when we devellop animations thanks to repaint() method ,
>>>>
>>>> for java 7 it works well
>>>>
>>>> but with java8 not ,
>>>>
>>>> (linux 64 bits it doesn't really work )
>>>>
>>>>
>>>>
>>>> so after watching the source code it seem that it is not a swing
>>>> problem
>>>>
>>>> but AWT : Component.java .
>>>>
>>>>
>>>>
>>>> thank you
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>
>>>
>>>
>>
>>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.openjdk.java.net/pipermail/swing-dev/attachments/20170412/07aead86/attachment.html>