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Defining a function in a struct in a custom node works on Windows but not Android. Would appreciate a workaround.

I think I have run into a bug with the material Custom HLSL node. When defining a function inside a struct as shown at https://forums.unrealengine.com/development-discussion/rendering/113855-extending-custom-hlsl-custom-expressions , the material works, compiles and runs fine in a standalone Windows built. However, when I choose to launch the program to Android (4.4.4 GLSL_ES2) the compilation fails. It appears as though one can still define the struct as long as one doesn't define a function inside.

Does anyone please know of a workaround to still define a function inside of a 'custom' material node that does work for Android?

Sample code that fails on Android but works on Windows:

 struct Test
 float2 T()
 return (float2(0,1));
 return 0.2;

Any help would be greatly appreciated.

Kind Regards


Product Version: UE 4.22
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asked Apr 23 '19 at 07:05 PM in Rendering

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