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Cooked Material Instance File Sizes Are Too Big

I believe that this is a bug because the game engine should compile all combinations of the master material, inside the master material. But it compiles different combinations(which has a non-default static switch parameter), into instances. For example: alt text

It should compile all instances into the master material. But if I alter a static switch parameter in an instance, it recompiles it again in that instance. That's why now there are extra tens of MB's of data in my cooked apk.

This is my master material:

alt text

Product Version: UE 4.12
untitled.jpg (390.0 kB)
untitled2.jpg (506.7 kB)
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asked Aug 15 '16 at 02:42 PM in Bug Reports

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Thanks for your report! UE-16031 has already been entered apparently, it's due to static parameters which are causing the bloat in cooked material instances. This bug is set at a priority 3 and it's backlogged at this time.

Thank you!

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answered Aug 16 '16 at 06:31 PM

avatar image derekvanvliet Feb 14 '17 at 03:38 PM

Hey Samantha would you be able to make this issue public on issues.unrealengine.com? We're running into this problem too and would love to track it's progress.

avatar image Samantha Sutton ♦♦ STAFF Feb 14 '17 at 03:52 PM

At this time, UE-16031 cannot be made public. Certain issues have information that we cannot release to the public and this happens to be one of them. Please let me know if you'd like an update in the future.

Thank you!

avatar image tomskuse Jun 27 '18 at 10:52 AM

We are seeing this issue as well. Was this ever resolved?

avatar image SalihBalkan Jan 04 '19 at 05:21 AM

Is this issue resolved in 4.20 or 4.21?

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