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Cesium Map flickers when showing two or more labels #12231
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Thanks for the report @timeichfeld-msa! Just to clarify, I see the blink in version 1.122, but not 1.121. Is this the same on your end? Or are you indeed seeing this in 1.121? |
Hi Gabby, yes, sorry about that, I see the flicker in 1.122, not 1.121 Thanks much :) |
As pointed out in #12261, this appears to be due to the label, not the model itself. For instance, id I comment out the label property in the CZML, the issue does not appear. |
It is OK with one label, and flashes when there are more than two |
Also reported in #12287 |
yes, when only add an entity with label, the problem will appear |
there's a problem with our label layer and version 1.121 and further (flickering black frame when zooming/panning, there's an issue on the Cesium tracker for that here : CesiumGS/cesium#12231 )
there's a problem with our label layer and version 1.120 and further (flickering black frame when zooming/panning, there's an issue on the Cesium tracker for that here : CesiumGS/cesium#12231 )
there's a problem with our label layer and version 1.120 and further (flickering black frame when zooming/panning, there's an issue on the Cesium tracker for that here : CesiumGS/cesium#12231 )
I have this tagged as "priority - next release" since it is a regression we'd like to see get fixed ASAP. Unfortunately we have not gotten a chance to get to the bottom of it just yet. I'll leave the label so this issue does not get lost; but at this point it's unlikely we'll get a fix into the next release on Dec 2. CC @jjspace |
Seems to be fixed with latest update (1.124.0) at least that's the case on my side |
What happened?
Hello,
I added a model via CZML and played the animation through the timeframe.
When the ModelGraphic appears on the surface, the entire map blinks out. Sometimes it takes .25 seconds or more for the map to come back. It is very noticeable.
This did not happen in the last version 1.120 It is happening in 1.121 (October release)
During animation, when many hundreds of models are added to the map, all at close timeframes, it creates a strobe effect. The map flickers for each item initially placed on the map. Once the item is on the map, it does not flicker.
Please play through the sandcastle example an dlet it loop a couple times. you will need to reload th emap to reproduce the effect. (click 'run' again)
Reproduction steps
...
Sandcastle example
sandcastle
Environment
Browser: chrome (any)
CesiumJS Version: 1.121
Operating System: windows
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