Problems on ANDROID DEVICES

[Francis Needham]

Hi all,

We've published a babylon js based product configurator for a client here :

https://v-moda.com/pages/forza-metallo_customizer

it works perfectly everywhere but on my brand new galaxy S9 the scene renders like this :

 

 

what could be the cause of it ? any ideas ?

 

Thanks !

PastedGraphic-2.tiff

[Sebavan]

Sounds like a driver issue on S9 as I can not repro on Pixel and Nexus :-( 

Could you create a repro in the playground ? Also could you could try disabling FXAA to check if it is related ?

 

[Francis Needham]

Thanks Sebavan - will try disabling FXAA.

I think it also could be the DDS map we are using for ENV mapping.

will keep you posted 

 

[Sebavan]

Investigating further, this seems to be related to FXAA and we were able to repro a similar issue on Galaxy S8.

I ll try to have it fix asap.

[Sebavan]

@Francis Needham I am now pretty sure this comes from an issue in the Samsung driver.

This is having the issue with ARM MALI: https://www.babylonjs-playground.com/#AURGYM#4

whereas this does not: https://www.babylonjs-playground.com/#AURGYM#57

This all works fine on other GPUs like the same samsung with a snapdragon instead. It seems the Mali drivers are having an issue with branching as the only diff between both is the position of the conditions.

You should report the problem to Samsung and ARM.

In the meantime as the workaround can be costly on nvidia where the condition might be optimized if it has the same result for an entire PU I am wondering about placing it in standard. I will check tomorrow with @Deltakosh

 

 

[Sebavan]

I deployed a new version fixing the previous broken PG should work on your phone now if you update BJS: https://www.babylonjs-playground.com/#V6J3E8

Thanks again for reporting it.

 

[Francis Needham]

Fantastic ! I've just deployed in production

 

thank you @Sebavan