Pixelated rendering results on android devices

[hannojg]

Hey, before filling out an issue template I wanted to see if anyone can help me with this issue.

We are using filament primarily for 3D rendering on android, and it's working pretty well so far!
However, on some android devices (Pixel 7 Pro, Pixel 7a) some users have reported issue with the rendering output appearing pixelated.

Here is a screenshot of such cases:

We are using the clear option to render the filament surface with opacity.

has anyone of you experienced something like this and knows what area of the rendering process could affect this?

(I ofc know that a full reproduction would be the best, I am working on that!)

[romainguy]

Have you tried enabling/disabling various post process features to see if any of them is responsible for the problem? (bloom, fxaa, etc.)

[hannojg]

No, are they set / enabled by default? If so, I will give it a try to disable them!

[hannojg]

Okay so I disabled all post processing effects. That changes nothing.
However when I did view->setPostProcessingEnabled(false) it rendered correctly.
So it must be some post processing effect that I can't control via the view's API that causes this issue/

Also it works when using Vulkan as backend (in this case I can keep the post processing effects enabled).

[hannojg]

What's interesting is that I got the same error on some none pixel devices if I use the Vulkan backend instead of openGL.

[hannojg]

I am able to reproduce these issues in some of the samples - will open a new issue ticket!

[hannojg]

#7794