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StackOverflowError in Image when auto-scaling differs from device zoom #2353

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#2358
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StackOverflowError in Image when auto-scaling differs from device zoom#2353
#2358
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HiDPIIssues related to High resolution monitorsbugSomething isn't workingregressionSomething that used to work

Description

@ptziegler
ptziegler
opened on Jul 27, 2025

To Reproduce

Run Snippet367 with -Dswt.autoScale=150.

Stacktrace:

Exception in thread "main" java.lang.StackOverflowError
	at org.eclipse.swt.internal.DPIUtil.getElementAtZoom(DPIUtil.java:289)
	at org.eclipse.swt.internal.DPIUtil.validateAndGetImageDataAtZoom(DPIUtil.java:260)
	at org.eclipse.swt.graphics.Image.initFromImageDataProvider(Image.java:797)
	at org.eclipse.swt.graphics.Image.<init>(Image.java:675)
	at org.eclipse.swt.internal.DPIUtil.autoScaleImageData(DPIUtil.java:156)
	at org.eclipse.swt.internal.DPIUtil.scaleImageData(DPIUtil.java:139)
	at org.eclipse.swt.graphics.Image.initFromImageDataProvider(Image.java:798)
	at org.eclipse.swt.graphics.Image.<init>(Image.java:675)
	at org.eclipse.swt.internal.DPIUtil.autoScaleImageData(DPIUtil.java:156)
	at org.eclipse.swt.internal.DPIUtil.scaleImageData(DPIUtil.java:139)
	at org.eclipse.swt.graphics.Image.initFromImageDataProvider(Image.java:798)
	at org.eclipse.swt.graphics.Image.<init>(Image.java:675)
...

Environment:

  1. Select the platform(s) on which the behavior is seen:
    • All OS
    • Windows
    • Linux
    • macOS

Version since

This is a regression introduced with 216f1ad.

Activity

  1. ptziegler
    added
    bugSomething isn't working
    regressionSomething that used to work
    on Jul 27, 2025
  2. ptziegler
    changed the title [-]StackOverflowError when scaling images on Linux[/-] [+]StackOverflowError when auto-scaling images on Linux[/+] on Jul 27, 2025
  3. ptziegler
    added
    Linux/GTKHappens on Linux
    and removed
    Linux/GTKHappens on Linux
    on Jul 27, 2025
  4. ptziegler
    changed the title [-]StackOverflowError when auto-scaling images on Linux[/-] [+]StackOverflowError in Image when auto-scaling differs from device zoom[/+] on Jul 27, 2025

  5. ptziegler commented on Jul 27, 2025

    @ptziegler
    ptziegler
    on Jul 27, 2025
    ContributorAuthor

    A similar issue can be reproduced on Windows, also as a result of this commit. For this, simply execute Issue0445_HiDPISmoothScaling when your device zoom is something other than 200%.

    Exception in thread "main" java.lang.StackOverflowError
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClassOrNull(BuiltinClassLoader.java:651)
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:639)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:188)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:520)
at org.eclipse.swt.graphics.GC.disposeOperations(GC.java:5968)
at org.eclipse.swt.graphics.GC.dispose(GC.java:5964)
at org.eclipse.swt.graphics.Image$ImageGcDrawerWrapper.newImageHandle(Image.java:2613)
at org.eclipse.swt.graphics.Image.getImageMetadata(Image.java:810)
at org.eclipse.swt.graphics.Image$ImageGcDrawerWrapper.newImageData(Image.java:2587)
at org.eclipse.swt.graphics.Image.getImageData(Image.java:1263)
at org.eclipse.swt.internal.DPIUtil.autoScaleImageData(DPIUtil.java:170)
at org.eclipse.swt.internal.DPIUtil.scaleImageData(DPIUtil.java:139)
at org.eclipse.swt.graphics.Image$BaseImageProviderWrapper.initializeHandleFromSource(Image.java:2292)
at org.eclipse.swt.graphics.Image$BaseImageProviderWrapper.newImageHandle(Image.java:2287)
at org.eclipse.swt.graphics.Image.getImageMetadata(Image.java:810)
at org.eclipse.swt.graphics.Image.win32_getHandle(Image.java:834)
at org.eclipse.swt.graphics.Image.createGdipImage(Image.java:858)
at org.eclipse.swt.graphics.GC.drawImage(GC.java:1201)
at org.eclipse.swt.graphics.GC$DrawImageToImageOperation.apply(GC.java:1194)
at org.eclipse.swt.graphics.GC.storeAndApplyOperationForExistingHandle(GC.java:5947)
at org.eclipse.swt.graphics.GC.drawImage(GC.java:1105)
at org.eclipse.swt.graphics.Image.drawScaled(Image.java:853)
at org.eclipse.swt.internal.DPIUtil$1.drawOn(DPIUtil.java:161)
at org.eclipse.swt.graphics.Image$ImageGcDrawerWrapper.newImageHandle(Image.java:2607)
at org.eclipse.swt.graphics.Image.getImageMetadata(Image.java:810)
at org.eclipse.swt.graphics.Image$ImageGcDrawerWrapper.newImageData(Image.java:2587)
at org.eclipse.swt.graphics.Image.getImageData(Image.java:1263)
at org.eclipse.swt.internal.DPIUtil.autoScaleImageData(DPIUtil.java:170)
at org.eclipse.swt.internal.DPIUtil.scaleImageData(DPIUtil.java:139)
...
  6. ptziegler
    added
    HiDPIIssues related to High resolution monitors
    on Jul 27, 2025

  7. HeikoKlare commented on Jul 28, 2025

    @HeikoKlare
    HeikoKlare
    on Jul 28, 2025
    Contributor

    Thank you for the report! We will have a look at this as soon as possible. The original code does also not seem fully sound to me, so let's see how we can properly fix it.

  8. arunjose696
    added a commit that references this issue on Jul 30, 2025

    Fix stack overflow in DPIUtil.autoScaleImageData

    0b95661
  9. HeikoKlare
    added 2 commits that reference this issue on Aug 3, 2025

    Fix stack overflow in DPIUtil.autoScaleImageData eclipse-platform#2353

    f273153

    Fix stack overflow in DPIUtil.autoScaleImageData eclipse-platform#2353

    bd1e417
  10. arunjose696
    added 2 commits that reference this issue on Aug 4, 2025

    Fix stack overflow in DPIUtil.autoScaleImageData eclipse-platform#2353

    5d514a4

    Fix stack overflow in DPIUtil.autoScaleImageData eclipse-platform#2353

    a2cf98c
  11. HeikoKlare
    added a commit that references this issue on Aug 4, 2025

    Fix stack overflow in DPIUtil.autoScaleImageData #2353

    007426f
  12. HeikoKlare
    closed this as completedin #2358on Aug 4, 2025
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