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babylon GUI image: pointerevents not triggered if the viewport height is smaller than 1


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Hi together,

i have some problems with the babylon GUI Image Observables for pointer events:

if my viewport height is lower than 1 the pointerevents are not catched at the right position

I will share two playgoundexamples:

This works: https://www.babylonjs-playground.com/#K60448#28

This doesn't work: https://www.babylonjs-playground.com/#K60448#29


Did i forget to set an attribute?

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could you have a look at those two playground examples as well?


the first example works fine while in the second example i added a second viewport and than the events are triggered slightly above the image.

does works: https://www.babylonjs-playground.com/index.html#K60448#33

doesn't work: https://www.babylonjs-playground.com/index.html#K60448#32

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This is not a bug per se. This is because you render the UI twice (once per camera) but the UI has only one state (so the latest camera wins).

I would recommend making sure that UI is not rendered on the second camera by using layerMasks

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the missing hint - thank you! :)


just in case someone has a similar setup:
i need to render the GUI elements in every viewport, but i just need to change the order in which the cameras are stored within activeCameras depending on the pointerposition and than the interaction with the labels works as expected.

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