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How to get many actor locations in material?

I was wondering if there was a way to get the location every instance of a specific actor and use this info in a dynamic material I am trying to find a way of quickly creating 100+ spheremasks in a a PP material to make fake shadows

Thanks for any help

Product Version: UE 4.18
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asked Aug 16 '18 at 10:04 PM in Rendering

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Cogganator
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avatar image redbox Aug 17 '18 at 04:01 AM

Dynamic arrays are supported only in dx12. However it is not a "quick" way.

https://docs.microsoft.com/en-us/windows/desktop/direct3d12/dynamic-indexing-using-hlsl-5-1

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You should write locations to a texture/render target to get that large data into the shader.

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answered Aug 17 '18 at 07:06 AM

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Deathrey
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avatar image Cogganator Aug 17 '18 at 12:53 PM

Thanks for the response I appreciate the help But If I am understanding that right- you think I should manually write RGB for texture coords, which I could do, but it would end up being very tedious and time consuming- which I was trying to avoid with blueprints

avatar image redbox Aug 17 '18 at 01:54 PM

No, @Deathrey mean that you should write a code, that will write required actors positions into RenderTarget texture, and read it in material.

avatar image Cogganator Aug 17 '18 at 05:29 PM

Oh I see I'll look into that then

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