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Macbook Pro Preview Rendering Issues

I've been walking through this tutorial:

https://docs.unrealengine.com/latest/INT/Engine/QuickStart/4/index.html

And while it's obvious it was written for a slightly older version of Unreal Engine, I am noticing some pretty big differences in my preview window. I am can't seem to figure out whether it is related to new settings being changed, or perhaps a bug.

Notably I am finding that both the world grid is very hard to see in Perspective view, and the atmospheric fog is not displaying properly even remotely close to the examples in the tutorial.

I have attached a screenshot for reference:

alt text

For reference I have

Macbook Pro Retina (Mid 2012), 2.6 GHz Intel Core i7, 16GB of Ram, running Mac OS X 10.10 with Unreal Engine 4.5.1

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asked Nov 13 '14 at 06:42 AM in Bug Reports

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amadeusdemarzi
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avatar image amadeusdemarzi Nov 13 '14 at 06:44 AM

P.S. Something seems to be really broken with answer hub. The button to submit this question simply wouldn't work. I had to use the browser developer console to grab the form element and call submit on it manually.

avatar image Steve Hardister ♦♦ STAFF Nov 13 '14 at 09:35 PM

The AnswerHub was experiencing problems but this has been fixed. Sorry for the inconvenience.

avatar image amadeusdemarzi Nov 13 '14 at 07:23 AM

Doing a bit more digging, I found that just changing the Precompute Params, specifically Density Height seemed to fix the issue.

To make matters really weird, I had tried previously to delete the atmospheric fog and re-add it. Still red above like in the screenshot. Once I played with that density value to fix it, deleting and re-adding atmospheric fog did not display that issue anymore.

So definitely some form of bug.

Oh, and for some reason now, grids are more visible now. I saw something very strange there.

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Hi amadeusdemarzi,

Thank you for bringing this issue to our attention. With the information you've provided I have generated a bug report [UE-5462]. Should this be addressed in a future build, an update will be posted to this thread.

Also, thanks for posting a workaround until this can be resolved!

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answered Nov 14 '14 at 03:02 PM

avatar image amadeusdemarzi Nov 14 '14 at 07:46 PM

Thanks so much!

avatar image marksatt-pitbull STAFF Nov 20 '14 at 11:57 AM

I've fixed the code that was causing this in Github commit fb3da0a7508c96fc2f5c4801a50ed80137aecca2. I'm not sure which binary build will contain this fix, but it is very simple so if you are building the editor yourself, you should be able to apply it locally.

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