Hi everyone, I am having troubles with the opacity map on IOS devices with the latest IOS version (15 at time of writing). The opacity just doesn’t seem to get applied, whereas the very same code works on IOS devices pre version 15 and windows PCs or android devices. Here is my example: Babylon.j…

After some investigation, I am confident the KTX code isn’t leaking anymore. The issue now with iOS is the amount of memory available on the device. Depending on how much memory is available on the device, loading this model will eventually run out of GPU memory. I believe this is why it crashes inc…

I updated the playground example with much smaller GLBs (300KB / 600 KB), so loading times shouldn’t be an issue anymore. => https://playground.babylonjs.com/#E2FYTU#24 We found out that the issue seems to be related to the usage of KTX2 compressed textures. The ring on the left side uses “normal”…

@Evgeni_Popov or @bghgary might have an idea

Maybe it is a problem when using a combination of compressed textures + sRGB buffers. Try to put this code in the PG and see if that helps (it disables sRGB buffers): BABYLON.SceneLoader.OnPluginActivatedObservable.add((plugin) => { plugin.useSRGBBuffers = false; }); https://playground.babylon…

@Evgeni_Popov thx for the tip, unfortunately it doesn’t help.

Doesn’t repro on my iOS 14 device as expected. I’m upgrading to 15 to see if it will repro.

The problem really seems to be related to the compression format of the KTX2 textures. Our 3D artist re-created the textures in multiple formats as explained in these docs and examples: [image] Multi-Platform Compressed Textures | Babylon.js Documentation Learn all about multi-platform…

[image] TheHOF: The problem really seems to be related to the compression format of the KTX2 textures. KTX2 is supposed to work everywhere. If it doesn’t, we should fix it even if KTX1 works.

I can repro after upgrading to 15.

OpacityTexture not working on IOS 15 devices

Questions

Evgeni_Popov November 11, 2021, 3:12pm 11

Have you seen this thread ETC2 ktx compression not compatible with macOS? - #9 by DarraghBurke?

Maybe the problem is related to the compression format used in the ktx2 files?

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OpacityTexture not working on IOS 15 devices

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