Any effect has the potential for slowing down depending on the size if
the node being rendered, since it is done as an image operation on the
entire area (bounding box) covered by the Parent. Have you noticed
whether DropShadow is worse than other effects, say, GaussianBlur? One
other thing to note is that caching a Parent will have no effect if the
children are animating, since it will need to be recreated each time.
-- Kevin
On 10/4/2018 11:32 AM, Dirk Lemmermann wrote:
Yes, I also noticed that DropShadow causes severe performance degradation.
Dirk
On 4 Oct 2018, at 13:10, Tom Schindl <tom.schi...@bestsolution.at> wrote:
Hi,
Why does applying a DropShadow on a large region cause problem when
animating nodes contained in that region?
package fxbugs;
import javafx.animation.ScaleTransition;
import javafx.application.Application;
import javafx.geometry.Insets;
import javafx.scene.Node;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.effect.BlurType;
import javafx.scene.effect.DropShadow;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.GridPane;
import javafx.scene.paint.Color;
import javafx.stage.Stage;
import javafx.util.Duration;
public class DropShadowPerformance extends Application {
@Override
public void start(Stage primaryStage) throws Exception {
BorderPane p = new BorderPane();
p.setPadding(new Insets(30));
GridPane container = new GridPane();
container.setHgap(10);
container.setVgap(10);
container.setStyle("-fx-background-color: green; -fx-padding: 10;");
container.setEffect(new DropShadow(BlurType.GAUSSIAN, Color.rgb(0, 0,
0, 0.3), 10, 0.5, 0, 0));
for( int i = 0; i < 8; i++ ) {
for( int j = 0; j < 14; j++ ) {
container.add(createButton(), i, j);
}
}
p.setCenter(container);
Scene s = new Scene(p, 800, 600);
primaryStage.setScene(s);
primaryStage.show();
}
private Node createButton() {
Button button = new Button("hello world");
button.hoverProperty().addListener((ob,ol,ne) -> {
ScaleTransition t = new ScaleTransition(Duration.millis(500),
button);
if( ne ) {
t.setFromX(1);
t.setFromY(1);
t.setToX(1.2);
t.setToY(1.2);
} else {
t.setFromX(1.2);
t.setFromY(1.2);
t.setToX(1);
t.setToY(1);
}
t.play();
});
return button;
}
public static void main(String[] args) {
launch(args);
}
}
If you run the following application:
* Maximize the window
* Hover over a button (eg the one in the right lower corner)
You'll notice that the animation is not smooth, setting cache flags on
the container does not improve the situation, nor does using a ONE_PASS_BOX.
Removing the effect on the container node "fixes" the problem.
This is on a MacBook Pro and Windows Surface both having a Intel Iris
Plus 650 graphics card.
Tom
--
Tom Schindl, CTO
BestSolution.at EDV Systemhaus GmbH
Eduard-Bodem-Gasse 5-7. A-6020 Innsbruck
Reg. Nr. FN 222302s am Firmenbuchgericht Innsbruck
