JavaFx badly displayed scene

Question

In my first approach to JavaFX, the scene is mistakenly displayed and I not find the cause. For example, the following code is proposed in the first basic tutorial from E(fx)clipse's page:

package Aplicacion;

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.effect.DropShadow;
import javafx.scene.layout.BorderPane;
import javafx.scene.paint.Color;
import javafx.scene.text.Font;
import javafx.scene.text.Text;
import javafx.stage.Stage;

public class Prueba extends Application {

    @Override
    public void start(Stage primaryStage) {
        BorderPane p = new BorderPane();
        Text t = new Text("Hello FX");
        t.setFont(Font.font("Arial", 60));
        t.setEffect(new DropShadow(2,3,3, Color.RED));
        p.setCenter(t);
        primaryStage.setScene(new Scene(p));
        primaryStage.show();
    }

    public static void main(String[] args) {
        launch(args);
    }
}

It should display the text "Hello FX", but shows the following:

My Java version is 8u65 for Windows 64 (Win 7).

It is incorrectly shown, as well as numerous other tests I've done with other features. — Rodrigo, Oct 23 '15 at 22:56
I disabled 3D graphics acceleration and now the scene is displayed correctly. I will report it as bug. Thank you very much for your guidance. You have not put your comment as answer to accept it. — Rodrigo, Oct 23 '15 at 23:30

score 1 · Accepted Answer · edited May 23 '17 at 10:27

It's an Environmental Issue

Likely JavaFX is incompatible with your video card and drivers.

Workaround

To workaround the rendering bug on your machine, explicitly disable the hardware rendering pipeline for JavaFX and only use the software rendering pipeline:

-Dprism.order=sw using a java -D property.

The behaviour you experienced seems buggy

The behavior looks like a bug. I think that, in the case of an unsupported graphics card, JavaFX is supposed to exit with an unsupported error or fall back to a software rendering pipeline rather than display garbled junk. You may wish to file a bug report at http://bugreport.java.com.

If you file a bug report so ensure that you include all information about the machine used for testing:

Machine make and model.
Video card or integrated graphics processor used.
Exactly what version of the video drivers are installed.
OS and Java version used.

You might also want to try updating your video card drivers and seeing if that fixes the issue.

Gate usage of conditional features using Platform.isSupported

Effects are conditional features, ensure you check if the the EFFECT conditional feature is enabled for your system before you try to use an effect. Use Platform.isSupported:

if (Platform.isSupported(ConditionalFeature.EFFECT)) {
    // use effects
}

If this fixes your issue, it is still an issue with the underlying JavaFX system as documentation states:

Using a conditional feature on a platform that does not support it will not cause an exception. In general, the conditional feature will just be ignored. See the documentation for each feature for more detail.

which is not occurring in your case.

JavaFx badly displayed scene

1 Answers1