PathTransition jitter
Hermann Maier
Ignatiamus at gmail.com
Mon May 8 05:55:26 UTC 2017
Thank you very much, Itai, for this straight tip, because testing some JavaFX
applcations with (X)Ubuntu 17.04 (Mesa 17.0.1 and Xorg>1.18.4) didn't show
any bad behavior like the aforementioned resource leak.
So the only question remaining is why nobody mentioned this as a possible
solution to JDK-8161914 on it's JBS page?
Anyway, I don't intend lead this off-topic, so I can only confirm the
jittering issue.
Cheers,
Hermann
Am 07.05.2017 um 13:16 schrieb Itai:
> Hermann - I believe this bug is due to a combination of Mesa and X.org - it
> seems to be resolved by using Mesa>=13.0 *and* X.org>=1.18.4 . Since this
> is a Linux-only bug, I don't think it's the same as the TransitionPath
> jitter, as it reportedly happens on Windows as well.
>
> On Sun, May 7, 2017 at 12:57 PM, Hermann Maier <Ignatiamus at gmail.com> wrote:
>
>> I can reproduce the problem as well on my system with (X)Ubuntu 16.04
>> 64-Bit and Mesa 12.0.6, with JDK 8u131.
>> Also, the CPU usage of the Java process and the Xorg process is increasing
>> constantly until the application gets completely laggy and unusable (like
>> every application that is using some JavaFX animation under Linux with the
>> hardware renderer). This bug is already known [1], the resource leak is
>> happening on my system too and it's very annoying (e.g. I made a game with
>> JavaFX and realized this too late…). Thus I would suggest that raising the
>> priority of that bug would be appropriate?
>> However, when I use the Software Renderer there's nothing like described
>> above, so it's really likely related to Mesa/Xorg.
>>
>>
>> Cheers
>>
>> [1] https://bugs.openjdk.java.net/browse/JDK-8161914
>>
>> Am 07.05.2017 um 06:03 schrieb Jose Martinez:
>>> Looks like I am unable to update the Jira ticket so I guess I'll update
>> the bug in here.
>>> Kevin mentioned that there is some relief if
>> "-Djavafx.animation.fullspeed=true" VM option is used. I notice that it
>> does improve but not remove the problem. Also, the jitter is not limited
>> to PathTransition. In the example below the problem is reproduced by using
>> Timeline and no PathTransition.
>>> Since like this is not just an issue with PathTransition, would it be
>> possible to bump up the priority on this? The Jira mentions the fix is
>> scheduled for Java 10. Does this affect all animation in JavaFX? Is there
>> anyway to move objects on the screen without jitter?
>>>
>>> private void pathJitterBug(Stage primaryStage) {
>>> // Circle circle = new Circle(30, Color.RED);
>>> // Path path = new Path();
>>> // path.getElements().add(new MoveTo(100, 100));
>>> // path.getElements().add(new LineTo(500, 100));
>>> // path.getElements().add(new LineTo(500, 500));
>>> // path.getElements().add(new LineTo(100, 500));
>>> // path.getElements().add(new LineTo(100, 100));
>>> //
>>> // PathTransition pathTransition = new
>> PathTransition(Duration.seconds(10), path, circle);
>>> // pathTransition.setCycleCount(Animation.INDEFINITE);
>>> // pathTransition.setOrientation(PathTransition.OrientationType
>> .ORTHOGONAL_TO_TANGENT);
>>> // pathTransition.playFromStart();
>>> //
>>> Circle circle2 = new Circle(20, Color.BLUE);
>>> Timeline tl = new Timeline(
>>> new KeyFrame(Duration.ZERO, new
>> KeyValue(circle2.centerXProperty(), 125), new
>> KeyValue(circle2.centerYProperty(), 125)),
>>> new KeyFrame(Duration.seconds(5), new
>> KeyValue(circle2.centerXProperty(), 425), new
>> KeyValue(circle2.centerYProperty(), 425))
>>> );
>>> tl.setCycleCount(Timeline.INDEFINITE);
>>> tl.setAutoReverse(true);
>>> tl.playFromStart();
>>> //
>>> Circle circle3 = new Circle(20, Color.GREEN);
>>> Timeline tl2 = new Timeline(
>>> new KeyFrame(Duration.ZERO, new
>> KeyValue(circle3.centerXProperty(), 425), new
>> KeyValue(circle3.centerYProperty(), 125)),
>>> new KeyFrame(Duration.seconds(5), new
>> KeyValue(circle3.centerXProperty(), 125), new
>> KeyValue(circle3.centerYProperty(), 425))
>>> );
>>> tl2.setCycleCount(Timeline.INDEFINITE);
>>> tl2.setAutoReverse(true);
>>> tl2.playFromStart();
>>> //
>>> Group root = new Group();
>>> // root.getChildren().addAll(circle, circle2, circle3);
>>> root.getChildren().addAll(circle2, circle3);
>>> Scene scene = new Scene(root, 600, 600);
>>> primaryStage.setTitle("Hello World!");
>>> primaryStage.setScene(scene);
>>> primaryStage.show();
>>> }
>>>
>>>
>>> From: Kevin Rushforth <kevin.rushforth at oracle.com>
>>> To: Jose Martinez <jmartine_1026 at yahoo.com>
>>> Cc: "openjfx-dev at openjdk.java.net" <openjfx-dev at openjdk.java.net>; Lord
>> Chaos <joearose1 at gmail.com>
>>> Sent: Friday, April 14, 2017 9:29 AM
>>
>>> Subject: Re: PathTransition jitter
>>>
>>> And here is the direct link in JBS:
>>>
>>> https://bugs.openjdk.java.net/browse/JDK-8178805
>>>
>>> -- Kevin
>>>
>>>
>>> Jose Martinez wrote:
>>>> Thank you Kevin.
>>>> For those interested here is the bug report:
>> http://bugs.java.com/bugdatabase/view_bug.do?bug_id=JDK-8178805
>>>>
>>>>
>>>>
>>>>
>>>> From: Kevin Rushforth <kevin.rushforth at oracle.com>
>>>> To: Jose Martinez <jmartine_1026 at yahoo.com>
>>>> Cc: "openjfx-dev at openjdk.java.net" <openjfx-dev at openjdk.java.net>
>>>> Sent: Thursday, April 13, 2017 7:49 AM
>>>> Subject: Re: PathTransition jitter
>>>>
>>>> One more thing: all bugs were transfered from the old JavaFX JIRA
>> intoJBS in June 2015. You can find the ones you filed using this query:
>>>>
>>>> https://bugs.openjdk.java.net/issues/?jql=reporter%3Djmartinezjfx
>>>>
>>>> -- Kevin
>>>>
>>>>
>>>> Jose Martinez wrote:
>>>> In case it helps, below is the original workaround that was provided.
>> This workaround no longer has any affect.
>>>> public class FixedPane extends Group { @Override
>>>> public BaseBounds impl_computeGeomBounds(BaseBounds bounds,
>> BaseTransform tx) {
>>>> if (!tx.isTranslateOrIdentity()) {
>>>> super.impl_computeGeomBounds(bounds,
>> BaseTransform.IDENTITY_TRANSFORM);
>>>> }
>>>> return super.impl_computeGeomBounds(bounds, tx);
>>>> }
>>>> }
>>>> Forgot to include: using a Windows 10 and Geforce gtx GPU.
>>>>
>>>> From: Tom Eugelink <tbee at tbee.org>
>>>> To: openjfx-dev at openjdk.java.net
>>>> Sent: Thursday, April 13, 2017 3:15 AM
>>>> Subject: Re: PathTransition jitter
>>>>
>>>> I'm seeing some very small irregularities; short hesitations and then
>> small jumps ahead. Nothing major, but it is not totally smooth. (2.6GHz
>> Intel i5, AMD FirePro M5950 GPU, Windows 10 x64)
>>>>
>>>> Slowing the animation to 8 instead of 4 seconds, make these hiccups
>> better visible. They're most definitely there.
>>>>
>>>>
>>>> On 13-4-2017 08:46, Michael Paus wrote:
>>>>
>>>> It runs perfectly smooth on my old MacBook Pro from 2012 with JDK
>> 8u152 ea.
>>>>
>>>> Am 13.04.17 um 04:25 schrieb Jose Martinez:
>>>>
>>>> Many moons ago I complained about jittery PathTransition animation.
>> A bug was openned and I was provided a workaround. This was with Java 7. I
>> revisted the old project that lead to that initial complain, this time with
>> Java 8. The problem seems to be back. I could not find the old bugreport,
>> since I think the JavaFX team is not using the same bug trackingsite.
>>>> Below is the test code to reproduce. I tried it using JDK 8_64 u5,
>> u11, u25, u112, u121 and the problem occurs with all of them. The
>> ImageViewstutters through the PathTransition. I have a new laptop with 6th
>> gen I7 and plenty of ram. I do not think it is the hardware. This used to
>> besmooth like butter. Anyone else experiencing this or can make any
>> suggestions?
>>>>
>>>> @Override
>>>> public void start(Stage primaryStage) { String
>> rocketImgStr=
>>>> "iVBORw0KGgoAAAANSUhEUgAAADIAAAAdCAYAAADoxT9SAAAACXBIWXMAAAs
>> YAAALGAGJqbUQAAAKT2lDQ1BQaG90b3Nob3AgSUNDIHByb2ZpbGUAAHjanVN
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>> CYm2kqCSb934H4PjAiOf7lfF+/zMAVaPsnAfVjSoAAAAASUVORK5CYII=";
>>>> Base64.Decoder decoder = Base64.getDecoder();
>>>> ByteArrayInputStream rocketInputStream = new
>> ByteArrayInputStream(decoder.decode(rocketImgStr)); ImageView iv = new
>> ImageView(new Image(rocketInputStream));
>>>> Path path = new Path();
>>>> path.getElements().add(new MoveTo(100, 100));
>>>> path.getElements().add(new LineTo(500, 100));
>>>> path.getElements().add(new LineTo(500, 500));
>>>> path.getElements().add(new LineTo(100, 500));
>>>> path.getElements().add(new LineTo(100, 100)); PathTransition
>> pathTransition = new PathTransition(Duration.seconds(4), path, iv);
>>>> pathTransition.setCycleCount(Animation.INDEFINITE);
>>>> pathTransition.setOrientation(PathTransition.OrientationType
>> .ORTHOGONAL_TO_TANGENT);
>>>> pathTransition.playFromStart(); Group root = new
>> Group();
>>>> root.getChildren().add(iv);
>>>> Scene scene = new Scene(root, 600, 600);
>>>> primaryStage.setTitle("Hello World!");
>>>> primaryStage.setScene(scene);
>>>> primaryStage.show();
>>>> }
>>>>
>>>> thanks,
>>>> jose
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>
>>>
>>>
>>>
>>
>>
>>
>
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