javafx大圖像崩潰

Question

JavaFX的新功能

此示例適用於小圖像。 但大圖像崩潰ImageView。

我的示例代碼是否有缺陷？ JavaFX中的大圖像有問題嗎？ 還有別的嗎？

我抓住從網頁的例子：

http://www.java2s.com/Code/Java/JavaFX/JavaFXImageZoomExample.htm

我下載和處理PDF文件：

http://optics.byu.edu/BYUOpticsBook_2013.pdf

gs -sDEVICE=png16m -dNOPAUSE -dBATCH -dSAFER \ 
    -r600 -dFirstPage=1 -dLastPage=1 \ 
    -sOutputFile=001.png BYUOpticsBook_2013.pdf 

這給了我一個5100×6600像素的圖片。

我嘗試查看圖像： 幾秒鐘顯示具有空 滾動面板和發射到控制檯堆棧跟蹤一個窗口之後。

import javafx.application.Application; 
import javafx.beans.InvalidationListener; 
import javafx.beans.Observable; 
import javafx.beans.property.DoubleProperty; 
import javafx.beans.property.SimpleDoubleProperty; 
import javafx.event.EventHandler; 
import javafx.scene.Scene; 
import javafx.scene.control.ScrollPane; 
import javafx.scene.image.Image; 
import javafx.scene.image.ImageView; 
import javafx.scene.input.ScrollEvent; 
import javafx.stage.Stage; 

/** 
* 
* @author O.J. Sousa Rodrigues (office at halbgasse.at) 
*/ 
public class ZoomExample extends Application { 

    private ImageView imageView = new ImageView(); 
    private ScrollPane scrollPane = new ScrollPane(); 
    final DoubleProperty zoomProperty = new SimpleDoubleProperty(200); 

    @Override 
    public void start(Stage stage) throws Exception { 

    zoomProperty.addListener(new InvalidationListener() { 
     @Override 
     public void invalidated(Observable arg0) { 
     imageView.setFitWidth(zoomProperty.get() * 4); 
     imageView.setFitHeight(zoomProperty.get() * 3); 
     } 
    }); 

    scrollPane.addEventFilter(ScrollEvent.ANY, 
     new EventHandler<ScrollEvent>() { 

     @Override 
     public void handle(ScrollEvent event) { 
     if (event.getDeltaY() > 0) { 
      zoomProperty.set(zoomProperty.get() * 1.1); 
     } else if (event.getDeltaY() < 0) { 
      zoomProperty.set(zoomProperty.get()/1.1); 
     } 
     } 
    }); 

    imageView.setImage(new Image("file:///home/jeff/001.png")); 
    imageView.preserveRatioProperty().set(true); 
    scrollPane.setContent(imageView); 

    stage.setScene(new Scene(scrollPane, 400, 300)); 
    stage.show(); 

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

堆棧跟蹤：

java.lang.NullPointerException 
at com.sun.prism.sw.SWGraphics.drawTexture(SWGraphics.java:686) 
at com.sun.prism.sw.SWGraphics.drawTexture(SWGraphics.java:665) 
at com.sun.prism.sw.SWGraphics.drawTexture(SWGraphics.java:648) 
at com.sun.javafx.sg.prism.NGImageView.renderContent(NGImageView.java:123) 
at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:2067) 
at com.sun.javafx.sg.prism.NGImageView.doRender(NGImageView.java:103) 
at com.sun.javafx.sg.prism.NGNode.render(NGNode.java:1959) 
at com.sun.javafx.sg.prism.NGGroup.renderContent(NGGroup.java:235) 
at com.sun.javafx.sg.prism.NGRegion.renderContent(NGRegion.java:576) 
at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:2067) 
at com.sun.javafx.sg.prism.NGNode.render(NGNode.java:1959) 
at com.sun.javafx.sg.prism.NGGroup.renderContent(NGGroup.java:235) 
at com.sun.javafx.sg.prism.NGRegion.renderContent(NGRegion.java:576) 
at com.sun.javafx.sg.prism.NGNode.renderForClip(NGNode.java:2308) 
at com.sun.javafx.sg.prism.NGNode.renderRectClip(NGNode.java:2202) 
at com.sun.javafx.sg.prism.NGNode.renderClip(NGNode.java:2228) 
at com.sun.javafx.sg.prism.CacheFilter.impl_renderNodeToCache(CacheFilter.java:663) 
at com.sun.javafx.sg.prism.CacheFilter.render(CacheFilter.java:567) 
at com.sun.javafx.sg.prism.NGNode.renderCached(NGNode.java:2372) 
at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:2058) 
at com.sun.javafx.sg.prism.NGNode.render(NGNode.java:1959) 
at com.sun.javafx.sg.prism.NGGroup.renderContent(NGGroup.java:235) 
at com.sun.javafx.sg.prism.NGRegion.renderContent(NGRegion.java:576) 
at com.sun.javafx.sg.prism.NGNode.doRender(NGNode.java:2067) 
at com.sun.javafx.sg.prism.NGNode.render(NGNode.java:1959) 
at com.sun.javafx.tk.quantum.ViewPainter.doPaint(ViewPainter.java:474) 
at com.sun.javafx.tk.quantum.ViewPainter.paintImpl(ViewPainter.java:327) 
at com.sun.javafx.tk.quantum.UploadingPainter.run(UploadingPainter.java:135) 
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) 
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) 
at com.sun.javafx.tk.RenderJob.run(RenderJob.java:58) 
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) 
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) 
at com.sun.javafx.tk.quantum.QuantumRenderer$PipelineRunnable.run(QuantumRenderer.java:125) 
at java.lang.Thread.run(Thread.java:745) 

Answer 1

有報道吉拉（你需要註冊才能閱讀）的幾個錯誤：渲染圖像

RT-22669時

• RT-21998 NullPointerException異常在渲染大圖像時需要處理失敗的紋理加載的情況
• RT-22073異常來自快照時拋出尺寸比最大紋理尺寸 大...

啓用該選項-Dprism.verbose = true來檢查您的設置。

另外，在此link之後，還可以選擇設置視頻內存。嘗試使用「-Dprism.poolstats = true」來監視紋理池的實際使用情況以更好地確定上限，並將該限制設置爲「-Dprism.maxvram = XX」（XX = 500m，...）

雖然我沒有測試過。你能發佈一個鏈接到你的圖片？