[FIXED] OpenJFX / JavaFX 16 WebView cannot display a simple webpage using WebGL

Issue

I've just tried to run a rudimentary example using OpenJFX 16 that is intended to open a webpage of a WebGL demo showing some blobs:

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.layout.VBox;
import javafx.scene.web.WebView;
import javafx.stage.Stage;

public class Main extends Application {

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

    @Override
    public void start(final Stage primaryStage) {
        primaryStage.setTitle("JavaFX WebView Example");

        WebView webView = new WebView();

        webView.getEngine().load("https://webglsamples.org/blob/blob.html");

        VBox vBox = new VBox(webView);
        Scene scene = new Scene(vBox, 960, 600);

        primaryStage.setScene(scene);
        primaryStage.show();
    }
}

However, I get the following error message:

This page requires a browser that supports WebGL. Click here to upgrade your browser.

I use Adoptium OpenJDK 16 under Mageia Linux. Is it the expected behaviour? I'm disappointed because a member of Gluon's support team told me:

there are some WebGL demos that run just fine in the WebView component

What can I do to solve this problem? Is it expected to work only with OpenJFX 17?

Edit.: Someone else tried with OpenJFX 18, it still doesn't work: https://jvm-gaming.org/t/openjfx-javafx-webview-not-working-with-webgl/70495/2

Solution

JavaFXs WebView does not support WebGL and I am not aware of any plans to change that. Who told you that there are working demos for that and where can they be found? There have only been some experiments to resolve this issue but no official solution yet. E.g., https://github.com/miho/NativeFX

Answered By - mipa