Shadows no longer working on iPad

[Kesshi]

Hi,
with the current 2.5 build the shadows are no longer working on iPad. You can test it with the predefined shadows playground.
I don't get an error or something. The shadows are just not visible.

@Sebavan the new float shadow support seems to be reason for this
i disabled the float shadows in my own build here
https://github.com/BabylonJS/Babylon.js/blob/master/src/Materials/babylon.materialHelper.ts#L111
and here:
https://github.com/BabylonJS/Babylon.js/blob/master/src/Lights/Shadows/babylon.shadowGenerator.ts#L140
after that the shadows are working again

I don't know if it is related but SSAO is also not working on iPad (its not a new problem, it never worked). Its the same thing, everything seems ok but the SSAO effect is just not visible.

[GameMonetize]

This is weird because float shadows test the presence of float texture support.

@Sebavan: let's add a boolean to tun off float textures even if they seem supported

[Kesshi]

13 minutes ago, Deltakosh said:

This is weird because float shadows test the presence of float texture support.

@Sebavan: let's add a boolean to tun off float textures even if they seem supported

Seems like testing for "OES_texture_float" is not enough. Read the answer here:
http://stackoverflow.com/questions/28827511/webgl-ios-render-to-floating-point-texture

[GameMonetize]

It should still work if you use default shadows

Can you confirm that if shadowGenerator.filter = BABYLON.ShadowGenerator.FILTER_NONE it works?

[Kesshi]

I can confirm that it is not working ... at least not correct
I used this playground: http://www.babylonjs-playground.com/#O8WDR

this is the result:

[GameMonetize]

can you try again? I've just published an update

[Kesshi]

9 hours ago, Deltakosh said:

can you try again? I've just published an update

That didn't help. No difference.
I looked at your changes. You are also checking for "OES_texture_float_linear" now. That will not work. According to http://webglreport.com/ the iPad supports "OES_texture_float_linear" and "OES_texture_float".
If it is true what is written here http://stackoverflow.com/questions/28827511/webgl-ios-render-to-floating-point-texture
These two extensions do not guarantee that you can render into a float texture. You can also find a way to check for float render support in that link.

[Sebavan]

Hello,

I ll fix it tonight and at the same time, this explains issues with the HDRCubeTexture on IOS, thank you Kesshi.

I ll use the  gl.checkFramebufferStatus in the engine to check the capabilities and ensure we have full float support correctly reported.

Thanks again for the link

 

[Sebavan]

Hello,

Could somebody try the following Playground on IOS ? @Kesshi, please let  me know how it is going on your device.

Would be sweet if that works :-)

http://www.babylonjs-playground.com/#O8WDR#10

After deeper analysis, we ll implement the stackoverflow solution.

THX,

[Kesshi]

@Sebavan that playground is working on my iPad

[Sebavan]

Hello Again :-)

We just finished integrating the fix. Could you try back the broken PG (ctrl+F5 to refresh the script):

http://www.babylonjs-playground.com/#O8WDR

We added a new capabilities to know if we can render to float texture:  textureFloatRender

Thanks for your help on this,

[Kesshi]

Thank you. Everything is working again now