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Annotation colors combine incorrectly when stacking, on some systems #254
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This must be some kind of fun integer math in the shader when we stack opaque sources. Which may or may not actually be difficult to fix? If it seems new, it's probably related to #238 . |
pkgw
changed the title
annotation display shows interactions
Annotation colors combine incorrectly when stacking, on some systems
Aug 28, 2023
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This may be a consequence of #238 but I haven't been tracking WWT recently so I don't know when it happened.
If I go to
https://cxc.cfa.harvard.edu/csc/wwt.html?ra=266.65392&dec=-28.71981&zoom=6.7909&display=dss&stackid=acisfJ1743231m292120_001
then I see
All the polygons (other than the selected one) are meant to be yellow, with the selected polygon being cyan. However, if you look at the center, where things all pike up, you can see lots of colors for these lines, in particular greens, and including purple for some part of the selected outline (although it appears that once the page was screen grabbed the colors tend to become white).
If I "zoom to stack" then I get
and you can see that there's a lot less "color contamination", but there's still some.
I don't know how much you can address this, or even how much of it may be my display adaptor (nvidia via nouveau) but thought I'd mention it, as I'm pretty darn sure this is new-ish behavior.
This app uses filled circle annotations, and with opacity set this leads to some fun behavior. For instance if I add sources to this view I get
Note that the upper-left region has a lot of purple in it, but these sources are all cyan circles.
If I zoom in - to https://cxc.cfa.harvard.edu/csc/wwt.html?ra=266.48146&dec=-29.00837&zoom=0.0798&display=dss&stackid=acisfJ1743231m292120_001 - and then view sources we get
where we can see that
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