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deneb-viz / deneb

Deneb is a custom visual for Microsoft Power BI, which allows developers to use the declarative JSON syntax of the Vega or Vega-Lite languages to create their own data visualizations.
https://deneb-viz.github.io
MIT License
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⚠️ Visuals Appear Blurry in Power BI Service #489

Open remsidave opened 1 month ago

remsidave commented 1 month ago

Hello @dm-p

We have a complex vega lite visual using concats and layers and aggregations and plotting up to 20k points as scatter plot with line overlays. This used to be rendered nicely in SVG mode but with the switch to deneb 1.7.0.0 in Power Bi Service (and only there) it now looks like it is rendered in Canvas mode (text is blurry and in general the appearance is not as sharp as it used to be). I tested this by switching another simpler plot to Canvas mode and in power Bi service the visual appearance (resolution, sharpness) is now identical to the complex plot that is set to SVG mode. Is it possible that the render mode is switched in the background?

If that doesn't ring a bell I can try to create a sharable version of the pbix file.

dm-p commented 1 month ago

This is a known issue with Chromium and affects Chrome and Edge browsers. It affects all custom visuals. I have reported to MS a few weeks ago and they are working on a fix.

remsidave commented 1 month ago

thanks for the swift response. Does it make sense to leave this one open or shall I close it as it already addressed?

dm-p commented 1 month ago

Normally I'd suggest closing, as there's nothing we can do from our end, but we'll leave it open for visibility - in case anyone else comes across the problem and wishes to report it. I'll close when we get confirmation from MS that it's fixed.

dm-p commented 1 week ago

@remsidave - it seems to be looking OK for me now, but it would be good to confirm from your end if there's still an issue?

remsidave commented 6 days ago

@dm-p it's hard to judge. I think they look less blurry, but still not as sharp as native Power Bi visuals if I compare text.

Here's a x axis from Deneb off the Web Service image

comparing to a Power Bi table header on the same report with the same zoom setting. Much sharper. image

I know this is not for html content but you mentioned that the underlying issue is affecting all custom visuals and text in an input field in html content still looks very blurry. From the same report on the same zoom settings image

we use Edge, currently on Version 128.0.2739.67

In any case I think this is not a critical issue at all and want to thank you for your efforts here. Without Deneb, Power Bi would be missing its most important visual. Just wanted to let you know :)

EDIT: just compared the same report between PBi Desktop and on PBi Service and the visuals are crystal clear in PBi Desktop and still blurry on PBi Service

beewishart commented 3 days ago

Hello @dm-p , I found this post as I am currently experiencing the blurry issue when viewing the Deneb visual in either the Power BI service and also in our application where we are embedding the visual. It appears fine in Power BI desktop. Do you know if MS as still looking into issue and if they have given you an ETA around a fix ?

dm-p commented 1 day ago

Thanks, both, for your input 🙏 And it's sad that it's still happening. We were given an ETA of 'about two weeks' several weeks ago, so I will follow up with MS when I return from leave in a few days