How to 3x multiply node in Material Editor? And how Flip on Y axis?

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Hi, what is the UE4 equivalent of 3x-Multiply 3 things (A B C) at the same time? Ty

Im converting a Unity formula to UE4. And the preview is black, so idk if using two multiplies in a row are working, or messing up the formula. Ty

how to 3x
how to 3x601×534 50.7 KB

  1. How do *Flip whatever this is on Y axis? (edit: not rotate by -90 degrees)
    In Unity the result has a black and red bottom corner. In UE4 the black and red corner is at the Top left.
    (In UE4, I tried this CustomRotator Node, with -0.25 (-90 degrees?). But the result is not correct - needs to be flipped, not rotated. And on the TexCoord node, I checked un Mirror U or V - didnt work.)
    rotate 90
    rotate 901032×1170 218 KB
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The equivilent of

image

is indeed

image

To rotate

image
image1707×503 133 KB

( Look at the material preview, left. I think the node preview is broken in UE5 )

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  1. Lol thanks. I thought so but needed to confirm.

  2. What you showed almost works. But I dont need to rotate (ignore the text on my old graphic). I need to Flip Y. How do I do that?
    Rotate makes the black corner correct. But the red Bar is incorrect.

    UE4 almost
    UE4 almost898×869 190 KB

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  1. If that is the same bug as for me in UE4.27, then the preview box does not update unless I [toggle] click the Up arrow to turn off the preview box, then click to turn back on (or else the “preview” does not update when the Mat-formula changes).

3b. But to fix that (so I dont need to toggle each preview box in my Mat), then I enabled 3 things at the top, but I think the key one is enable “Live Update.”

Preview update fix
Preview update fix895×462 120 KB

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If you want to flip Y, you subtract it from 1 ( I think ). :slight_smile:

Split the UV at source, with component mask, flip the Y and re combine with ‘append vector’.

image
image1707×459 125 KB

You’re right about the preview, I think. Why on earth would that not be by default?..

or

image
image1613×396 105 KB

1 Like
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Solved: Thanks for your time and posting the pictures. Easier to see.
Your method worked!

UE4 flip Y of UV
UE4 flip Y of UV1021×561 123 KB

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I think perhaps for low end systems. So ill take the time to say I’m thankful that my and your PCs can handle UE4 live previews.

While using Unity, I noticed it takes 30% of my CPU resources (fan rev) while doing nothing. I only had their Material (Shader) window open. Whereas UE4 uses 0.5% while open but doing nothing, and uses 1-3Gigs Ram (which I think is better - makes my PC less hot).
Good day.

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