If your scene is small enough just make one texture for whole level. If you just need that texture for shore effect you can preprocess it to have simple alpha mask where water should have shore effect. You can start by making simple lerp by height and sealevel. This will make water have shore if there is less than x amount of water. Then you can blur this a bit. Then add some time based noise offset animation and it should look good.
Any update on this? (:
You can use distance fields to mask out shores for spawning foam. However I’m still not sure how to get this uneven shape that follows the contour of the shoreline while fading out on one side as shown in post #1.
Aside from manually placing them with splines or something, ofcourse. But I’m more interested to find out if it is possible to get it dynamically?
Here’s a pic explaining what I mean:
Pic 2 is roughly what I’d like to know how to do (similar to 1), while 3 is whats easily possible with Distance fields (even having the further side fade out gradually). I just can’t figure out how to get a “break-up” pattern to only show up on the edge on the further side like in 1 and 2.
What you want is called blend modulation. The basic idea is to break up a low frequency gradient with a high frequency one. The material function Height Lerp provides an easy way to do it but there are lots of different ways to try it out.
@, thank you once again. That seems to be it, almost.
I’m currently using a panner to move the break up texture (currently a checker pattern), however it creates this issue since it always moves into the same direction, no matter where it is.
Is it possible to get it to move more in the directions of the yellow arrows in the below picture?
EDIT: Posted a possible solution at the bottom after some testing.
Would dynamic distance field flow maps work? I don’t really care about stretching or, some clipping where directions change or minor things like that.
Heres my material if anyone likes to give it a try. I put the gradient from the distance fields in the transitional phase input (the wire that goes off-screen).
EDIT: Dynamic flow maps based of the distance fields seem to be in the right direction. Here’s a very rough, 5 minute test. Now I’ll just have to combine them with the blend modulation. The flickering and weirdness is easily fixed by smoothing the distance field gradient.
This may give some hints:
He uses a sobel filter to get the vectors from the distance map.
Greetings, someone was asking me how to achieve the shoreline effect I created and pointed me to this thread. I posted a thread a couple weeks ago on a problem I was trying to solve which is exactly what Gmi is trying to resolve right now. But before I ask anything, I thought I’d share a bit more in depth on how to achieve this effect for those who are new or not as knowledgeable on the unreal engine.
To start off, here is what I created. I’ve worked on it since, so its changed a bit. I’m also trying to achieve a style similar to Rime and The Witness. To achieve this look, I used something called Distance Fields which has been mentioned already multiple times but there is very little info on how to use it and how to activate it and what to watch out for. First off, you need to turn on Generate Mesh Distance Fields.
As seen in the red boxes of the picture, you go to Edit - Project Settings - Rendering - and Check Generate Mesh Distance Fields. With that turned on, we can now use nodes that use Distance Fields such as the Distance Field Gradient which is what is used to create flow maps but the node I used is called distancetonearestsurface. Here is a simple material I created to help demonstrate its usage.
The node in the red box is the important one and while I’m not all that familiar with materials, from what I understand, overuse of this node can get expensive but using it a few times doesn’t hurt too much. I use it only once and split off after to achieve a variety of effects using the same information. The nodes below are Scalar Parameters for those unfamiliar and I use an instanced material so I can decide on how much foam I want and how sharp/smooth it is. The parameters FoamSpread, controls the smooth spread of the shoreline while Add adds more to the sharp amount of shoreline. For example, you can have some foam that’s sharp and then let it smooth out. Mask Power is an addition just to sharpen the smooth. Its not necessary but it gives a little more control sometimes. Here are the numbers I use for the parameters to start off.
And here is the result of this Material. The red boxes are to show another option to control distance fields which affects rendering distance and also sometimes affects the weird jagged edges you might see on your shoreline.
Hopefully this helps for those who are new or those struggling with finding a solution to shorelines. There are some issues you might run into. If you dont see the shoreline and the whole sea is covered in your foam color, it may be an issue with shadows. You can check by checking and unchecking the shadows checkbox for your water plane as shown in this image.
There we go, I hope that helped those who weren’t able to follow or couldn’t find the solutions to the hints people mention. If I missed anything, go ahead and ask any questions. I’ll try to answer them but I’m no guru when it comes to the complicated stuff so I might not be able to answer.
Now onto my question. Hey Gmi, I’m trying to find a solution to the same problem you are having and it seems you managed to figure something out? I tried following your picture example but I’m not getting anything close. How do you get it to flow away in ALL directions from your land. I got a lot of weird results with some parts flowing the right way but the rest not flowing correctly. Do you use the flowmap node? Do you normalize or manipulate the distancefieldgradient or are you using some different math?
Heres a link to my thread (not much to see).
Below is the code to copy and paste to create the example I showed.
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Begin Object Class=MaterialExpressionComment Name="MaterialExpressionComment_24"
End Object
Begin Object Name="MaterialExpressionComment_24"
SizeX=668
SizeY=249
Text="Mask Power"
MaterialExpressionEditorX=-960
MaterialExpressionEditorY=144
MaterialExpressionGuid=B6A229FA4285D74FECE9948186C2570E
Material=PreviewMaterial'/Engine/Transient.ExampleDistanceField'
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LinkedTo(0)=EdGraphPin'MaterialGraphNode_163.EdGraphPin_4170'
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PinName="Max"
PinType=(PinCategory="optional")
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PinName="Min"
PinType=(PinCategory="optional")
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PinName="Input"
PinFriendlyName=" "
PinType=(PinCategory="required")
LinkedTo(0)=EdGraphPin'MaterialGraphNode_160.EdGraphPin_4134'
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MaterialExpressionEditorX=-544
MaterialExpressionEditorY=192
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Material=PreviewMaterial'/Engine/Transient.ExampleDistanceField'
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Pins(1)=EdGraphPin'EdGraphPin_4125'
Pins(2)=EdGraphPin'EdGraphPin_4126'
Pins(3)=EdGraphPin'EdGraphPin_4127'
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NodeGuid=BB31757E48DDD1F89564C2BD8CFCFE7F
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LinkedTo(0)=EdGraphPin'MaterialGraphNode_161.EdGraphPin_4124'
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PinType=(PinCategory="optional")
LinkedTo(0)=EdGraphPin'MaterialGraphNode_159.EdGraphPin_4138'
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PinType=(PinCategory="required")
LinkedTo(0)=EdGraphPin'MaterialGraphNode_157.EdGraphPin_4149'
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MaterialExpressionGuid=942421744F00FAD35FEACC89E152564F
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Pins(1)=EdGraphPin'EdGraphPin_4133'
Pins(2)=EdGraphPin'EdGraphPin_4134'
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PinName="Output"
PinFriendlyName=" "
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LinkedTo(0)=EdGraphPin'MaterialGraphNode_160.EdGraphPin_4133'
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ParameterName="Mask Strength"
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Group="Other"
MaterialExpressionEditorX=-912
MaterialExpressionEditorY=272
MaterialExpressionGuid=48DA061F41ED610957E9D1852379DC90
Material=PreviewMaterial'/Engine/Transient.ExampleDistanceField'
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Pins(0)=EdGraphPin'EdGraphPin_4138'
NodePosX=-912
NodePosY=272
bCanRenameNode=True
NodeGuid=FA00923F440158C07E33C49CB0322F3C
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Begin Object Class=MaterialExpressionComment Name="MaterialExpressionComment_25"
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Begin Object Name="MaterialExpressionComment_25"
SizeX=864
SizeY=320
Text="Edge Foam Mask"
MaterialExpressionEditorX=-1952
MaterialExpressionEditorY=80
MaterialExpressionGuid=5744FDC0412795F81338E0BA21EB9F37
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MaterialExpressionComment=MaterialExpressionComment'MaterialExpressionComment_25'
NodePosX=-1952
NodePosY=80
NodeWidth=864
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NodeComment="Edge Foam Mask"
NodeGuid=B468A6654F7D87FB70FF4E8342D281A5
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PinName="Output"
PinFriendlyName=" "
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LinkedTo(0)=EdGraphPin'MaterialGraphNode_157.EdGraphPin_4146'
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PinName="B"
PinType=(PinCategory="optional")
LinkedTo(0)=EdGraphPin'MaterialGraphNode_155.EdGraphPin_4160'
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PinName="A"
PinType=(PinCategory="optional")
LinkedTo(0)=EdGraphPin'MaterialGraphNode_156.EdGraphPin_4156'
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MaterialExpressionEditorY=176
MaterialExpressionGuid=5AD0901D46C9A99DF718EFB51E10BBBB
Material=PreviewMaterial'/Engine/Transient.ExampleDistanceField'
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MaterialExpression=MaterialExpressionSubtract'MaterialExpressionSubtract_12'
Pins(0)=EdGraphPin'EdGraphPin_4140'
Pins(1)=EdGraphPin'EdGraphPin_4141'
Pins(2)=EdGraphPin'EdGraphPin_4142'
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LinkedTo(0)=EdGraphPin'MaterialGraphNode_160.EdGraphPin_4132'
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PinName="Max"
PinType=(PinCategory="optional")
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PinName="Min"
PinType=(PinCategory="optional")
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Begin Object Name="EdGraphPin_4146"
PinName="Input"
PinFriendlyName=" "
PinType=(PinCategory="required")
LinkedTo(0)=EdGraphPin'MaterialGraphNode_158.EdGraphPin_4142'
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MaterialExpressionEditorX=-1328
MaterialExpressionEditorY=176
MaterialExpressionGuid=680C4A114C3DE5E12D4E05919299CE36
Material=PreviewMaterial'/Engine/Transient.ExampleDistanceField'
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MaterialExpression=MaterialExpressionClamp'MaterialExpressionClamp_25'
Pins(0)=EdGraphPin'EdGraphPin_4146'
Pins(1)=EdGraphPin'EdGraphPin_4147'
Pins(2)=EdGraphPin'EdGraphPin_4148'
Pins(3)=EdGraphPin'EdGraphPin_4149'
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NodeGuid=E86D60E148C6D7F4F5C58685B6EB3DBB
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Begin Object Class=EdGraphPin Name="EdGraphPin_4156"
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Begin Object Class=EdGraphPin Name="EdGraphPin_4155"
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Begin Object Class=EdGraphPin Name="EdGraphPin_4154"
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Begin Object Class=MaterialExpressionDivide Name="MaterialExpressionDivide_14"
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Begin Object Name="EdGraphPin_4156"
PinName="Output"
PinFriendlyName=" "
Direction=EGPD_Output
LinkedTo(0)=EdGraphPin'MaterialGraphNode_158.EdGraphPin_4140'
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PinName="B"
PinType=(PinCategory="optional")
LinkedTo(0)=EdGraphPin'MaterialGraphNode_154.EdGraphPin_4162'
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Begin Object Name="EdGraphPin_4154"
PinName="A"
PinType=(PinCategory="optional")
LinkedTo(0)=EdGraphPin'MaterialGraphNode_153.EdGraphPin_4165'
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Begin Object Name="MaterialExpressionDivide_14"
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B=(Expression=MaterialExpressionScalarParameter'MaterialGraphNode_154.MaterialExpressionScalarParameter_43')
MaterialExpressionEditorX=-1632
MaterialExpressionEditorY=176
MaterialExpressionGuid=6BC66DA6499A42ED617D14B589BE6676
Material=PreviewMaterial'/Engine/Transient.ExampleDistanceField'
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MaterialExpression=MaterialExpressionDivide'MaterialExpressionDivide_14'
Pins(0)=EdGraphPin'EdGraphPin_4154'
Pins(1)=EdGraphPin'EdGraphPin_4155'
Pins(2)=EdGraphPin'EdGraphPin_4156'
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MaterialExpressionGuid=C3BC24954CFB83B860B9B5BBA7E5EDB6
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@Volfox, here’s basically my current material (not finished yet) but it shows how I got it to move evenly in all directions. The three wires coming from the top of the picture is basically same as the one output you use as a alpha in this screenshot I apologize for the messy blueprint and crossing wires etc, hopefully it’s understandable. I created a material instance of this material which I applied to my objects.
Some of those nodes might be outdated and not in use at all and I just haven’t deleted them yet.
