How to create a vertex shader similar to Subway Surfers?

Development Rendering
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1

I’m trying to make a post processing shader/material for an infinite runner like Subway Surfers. In SS they spawn their map pieces all in a straight row then use the shader to simulate the turning. I’ve got a cubic lens distortion shader working from a tutorial from http://eat3d.com/free/ue4-shader-fx-cubic-lens-distortion but I can’t figure out how to get it to work without a texture. The post processing effect simply shows the texture and not the rest of the game.

Can anyone point me in the right direction as to how to do this? I haven’t used UE4 long, I’ve got more of a Unity background. Would it be possible to find and grab the material/shaders from the VR demo and use that?

2

Hey,

I’ve tried to achieve the curvature effect seen in Subway Surfer with a different approach. I use a Material on the objects themselves that I would like to be affected by the curvature. It’s a simple a maybe not perfect solution, I’d gladly accept any ideas to improve it.

Here is the relevant part of the material:

21220-distance_based_curvature.png
21220-distance_based_curvature.png1146×784 125 KB

To utilize it, simply connect the output of the rightmost node to WorldPositionOffset input in your material.

The effect in action, with and without the connection to WorldPositionOffset:

21221-distance_based_curvature_test3.jpg
21221-distance_based_curvature_test3.jpg1900×1021 114 KB

21222-distance_based_curvature_test2.jpg
21222-distance_based_curvature_test2.jpg1912×1023 106 KB

I hope it helps!

3

This works great! Thanks for the help

4

Is it possible to make pivot point a little away from camera? Something like this:

https://scontent-lhr.xx.fbcdn.net/hphotos-xpf1/t31.0-8/1291782_877193258971472_913421140384402982_o.jpg

5

Wow! That’s fantastic, thank you for sharing.

Any way to change the direction?

6

THANKS! very nice :wink:

7

Yes you can use the const3 node connected to the cross product and expose it as parameter and experiment with it to find the direction in which the effect goes and you can use -1 as a value to make the effect go in the reverse direction.

8

This one here is a material function just copy the code and paste it in the material function canvest ;3

  • The Code -

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CustomProperties Pin (PinId=FE66CA194B5FD53720B2DAA16368B06F,PinName=“Z (S)”,PinType.PinCategory=“optional”,PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,LinkedTo=(MaterialGraphNode_14 6FA20A0B4F81130314D7F1B61137154C,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,)
CustomProperties Pin (PinId=951CE4BA459B7993B2E533BC4D9D7AAA,PinName=“Result”,Direction=“EGPD_Output”,PinType.PinCategory="",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,LinkedTo=(MaterialGraphNode_0 CEA7837F49505164B56031AB40265247,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,)
End Object
Begin Object Class=/Script/UnrealEd.MaterialGraphNode Name=“MaterialGraphNode_12”
Begin Object Class=/Script/Engine.MaterialExpressionScalarParameter Name=“MaterialExpressionScalarParameter_1”
End Object
Begin Object Name=“MaterialExpressionScalarParameter_1”
ParameterName=“World -0-”
ExpressionGUID=F64972DC4E7BE46A4A5C82A73830C2D5
MaterialExpressionEditorX=-624
MaterialExpressionEditorY=272
MaterialExpressionGuid=B7DC26CA4407F33EBEF255A90A0726D4
Material=Material’"/Engine/Transient.Material_1"’
End Object
MaterialExpression=MaterialExpressionScalarParameter’“MaterialExpressionScalarParameter_1”’
NodePosX=-624
NodePosY=272
bCanRenameNode=True
NodeGuid=714C41D74EE47108264736BE84F0B0ED
CustomProperties Pin (PinId=F5F9796040550C13994914B5AC388573,PinName=“Output”,PinFriendlyName=" “,Direction=“EGPD_Output”,PinType.PinCategory=”",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,LinkedTo=(MaterialGraphNode_11 F3898EF94C6212ED41F5929735001B57,MaterialGraphNode_11 8ABF8162495BBA1DCA5FD5B975085DA0,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,)
End Object
Begin Object Class=/Script/UnrealEd.MaterialGraphNode Name=“MaterialGraphNode_13”
Begin Object Class=/Script/Engine.MaterialExpressionAdd Name=“MaterialExpressionAdd_0”
End Object
Begin Object Name=“MaterialExpressionAdd_0”
A=(Expression=MaterialExpressionMultiply’“MaterialGraphNode_9.MaterialExpressionMultiply_1”’)
B=(Expression=MaterialExpressionMultiply’“MaterialGraphNode_8.MaterialExpressionMultiply_0”’)
MaterialExpressionEditorX=-848
MaterialExpressionEditorY=288
MaterialExpressionGuid=450EFCE049BB6DE25BC07988D7A401C6
Material=Material’"/Engine/Transient.Material_1"’
End Object
MaterialExpression=MaterialExpressionAdd’“MaterialExpressionAdd_0”’
NodePosX=-848
NodePosY=288
NodeGuid=03B1710D4C36FA9C592A178D1A924080
CustomProperties Pin (PinId=E97C0E284F32B25EDB35249D69ABA745,PinName=“A”,PinType.PinCategory=“optional”,PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,LinkedTo=(MaterialGraphNode_9 8C70EB534025C49D1E2748AEE226273E,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,)
CustomProperties Pin (PinId=FA9D9ACB45A655105815E7A06CFE1760,PinName=“B”,PinType.PinCategory=“optional”,PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,LinkedTo=(MaterialGraphNode_8 9DA11D5041B46F21825A57BF76D27C0C,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,)
CustomProperties Pin (PinId=C05CB38D4E963FB3901629A5474AAB89,PinName=“Output”,PinFriendlyName=" “,Direction=“EGPD_Output”,PinType.PinCategory=”",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,LinkedTo=(MaterialGraphNode_14 8DAC5615452902A5A576C780EFAB4FCF,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,)
End Object
Begin Object Class=/Script/UnrealEd.MaterialGraphNode Name=“MaterialGraphNode_14”
Begin Object Class=/Script/Engine.MaterialExpressionMultiply Name=“MaterialExpressionMultiply_2”
End Object
Begin Object Name=“MaterialExpressionMultiply_2”
A=(Expression=MaterialExpressionAdd’“MaterialGraphNode_13.MaterialExpressionAdd_0”’)
B=(Expression=MaterialExpressionScalarParameter’“MaterialGraphNode_10.MaterialExpressionScalarParameter_0”’)
MaterialExpressionEditorX=-768
MaterialExpressionEditorY=400
MaterialExpressionGuid=130FD3904A647B9843B2EFA851846198
Material=Material’"/Engine/Transient.Material_1"’
End Object
MaterialExpression=MaterialExpressionMultiply’“MaterialExpressionMultiply_2”’
NodePosX=-768
NodePosY=400
NodeGuid=FBD8968A495562B33F135A9DB136EEA6
CustomProperties Pin (PinId=8DAC5615452902A5A576C780EFAB4FCF,PinName=“A”,PinType.PinCategory=“optional”,PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,LinkedTo=(MaterialGraphNode_13 C05CB38D4E963FB3901629A5474AAB89,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,)
CustomProperties Pin (PinId=01F856B44E3B8D51D8B54AAAC1075033,PinName=“B”,PinType.PinCategory=“optional”,PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,LinkedTo=(MaterialGraphNode_10 4B15C0114701836555A262A86C136411,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,)
CustomProperties Pin (PinId=6FA20A0B4F81130314D7F1B61137154C,PinName=“Output”,PinFriendlyName=" “,Direction=“EGPD_Output”,PinType.PinCategory=”",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.ContainerType=None,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,LinkedTo=(MaterialGraphNode_11 FE66CA194B5FD53720B2DAA16368B06F,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,bOrphanedPin=False,)
End Object