Error rendering a lot of blazes

Prerequisites

• Put an X between the brackets on this line if you have done all of the following:
  • Running the latest version of Constellation
  • Attached the Support Package via Help > Support Package
  • Checked the FAQs: https://github.com/constellation-app/constellation/wiki/FAQ
  • Checked that your issue isn’t already filed: https://github.com/constellation-app/constellation/issues
  • Checked that there is not already a module that provides the described functionality: https://github.com/constellation-app/constellation/wiki/Catalogue-of-Repositories

Description

With a lot of blazes on a graph if you try to zoom in and out, it eventually causes a graphics card error and you can’t interact with the graph anymore.

java.lang.NullPointerException
    at au.gov.asd.tac.constellation.graph.StoreGraph.getObjectValue(StoreGraph.java:1772)
    at au.gov.asd.tac.constellation.visualgraph.display.GraphVisualAccess.getBlazed(GraphVisualAccess.java:920)
    at au.gov.asd.tac.constellation.display.renderer.batcher.BlazeBatcher.bufferBlaze(BlazeBatcher.java:147)
    at au.gov.asd.tac.constellation.display.renderer.batcher.BlazeBatcher.fillBatch(BlazeBatcher.java:140)
    at au.gov.asd.tac.constellation.display.renderer.batcher.BlazeBatcher.updateBlazes(BlazeBatcher.java:105)
    at au.gov.asd.tac.constellation.display.renderer.GraphRenderable.lambda$getChangeProcessor$21(GraphRenderable.java:255)
    at au.gov.asd.tac.constellation.visualsupport.display.VisualProcessor.lambda$null$1(VisualProcessor.java:289)
    at java.util.ArrayList.forEach(ArrayList.java:1249)
    at au.gov.asd.tac.constellation.visualsupport.display.VisualProcessor.lambda$processChangeSet$2(VisualProcessor.java:288)
    at java.util.HashMap.forEach(HashMap.java:1288)
    at au.gov.asd.tac.constellation.visualsupport.display.VisualProcessor.processChangeSet(VisualProcessor.java:286)
    at au.gov.asd.tac.constellation.visualsupport.display.VisualProcessor.lambda$update$0(VisualProcessor.java:200)
[catch] at java.lang.Thread.run(Thread.java:748)

There was a GL error around the same time which was GLReadBufferUtil.readPixels: readPixels error 0x502 1038x633

Steps to Reproduce

1. [First Step]
2. [Second Step]
3. [and so on…]

Expected behaviour: [What you expect to happen]

Actual behaviour: [What actually happens]

Reproduces how often: [What percentage of the time does it reproduce?]

Additional Information

Any additional information, configuration or data that might be necessary to reproduce the issue.

[Auriga2]

Finally, it loaded. (In 44 minutes, with additional views closed) But couldn’t recreate the original error, although working with this graph is super slow. Attached a gif.

Swapping tabs make the constellation to go “Not Responding”, if the other graphs are also big. With smaller other graphs, no problem.

[arcturus2]

Oh wow. Thank you for giffing it and for the patience. I should have asked what the spec of your computer was…

Most of the delay will be with the graphics card trying to render the graph Constellation built.

So I think it is safe to say this issue is no longer a problem!

Thank you for your patience with testing this graph @Auriga2.