Radial Blur PostProcess Material

By using your post process material, I do get a cross in the center, but when I look it from HTC vive, right eye is still wrong.

I am trying to make some sort of super speed effect with this.
Is there any way to attach any of the parmeters to the speed of my First Person Character?
Which param should I use to achieve this?

Hey guys, this seems to be THE Radial blur thread. I’m having trouble reproducing the blur. I feel like I’ve copied the instructions accurately (I’ve not spent much time in the material editor so I don’t understand most of it), but I’m not seeing the blur I was hoping for. You can see my nodes in the image below.

1cb4473fbc5afecab7c9a1f212deb195142b10ab.png

There’s an error “Error [SM5] Material.usf(1270,21-50): error X3004: undeclared identifier 'View_ViewSizeAndSceneTexelSize” which I don’t really understand. I also tried applying the post process to camera in my scene and got the result you see below. Not exactly what I was expecting.

a013675802b6f1269cdda3c9d0bcbab167cb814c.jpeg

Do you guys have any suggestions?

Cheers @Zarrashi @Tomura

Zarrashi’s tweaks seem to work in both 4.10 & 4.14.1…
(Limitations: Needs changes to work in Split-Screen etc)

Hi everyone ! Thanks @Zarrashi i tried your way but I can’t see anything when I press play. I’ve create a material, I can Apply the changes without any error but when I launch the game I can’t see the blur… Many thanks in advance for your help (sorry for my english).

Did you make a postprocessvolume and set the material as a “blendable”?

Well yes I think so, as you can see in the screenshot I think that I did the correct things… I’m new in the world of Unreal Engine so maybe I forgot something… Thanks for your help ![spoiler]

[/spoiler]

The material looks OK, but you need to assign it to a postProcessVolume and actually use it.

Great it works :slight_smile: I forgot to create a postProcessVolume ! Thank you so much !

Anyone manage to get this working on the HTC Vive?

I’m getting the exact same error. Is “View.ViewSizeAndSceneTexelSize” no longer valid?

This is working in 4.14 for me:

Screenshots of Setup:
148d337f92baa804a627a6d760f3e9513ded0113.png


Shader Code:



int TexIndex = 14;
float samples[10] = {-0.08,-0.05,-0.03,-0.02,-0.01,0.01,0.02,0.03,0.05,0.08};
float2 dir = ScreenMult * float2(0.5,0.5) - UV; 
float4 sum = SceneTextureLookup(UV, TexIndex, false);
float2 pos = float2(0.0,0.0);
for(int i = 0; i<10; i++)
{
    pos = UV + dir * samples* * SampleDist;
    max(min(pos, ScreenMult * float2(1.0, 1.0)), float2(0.0,0.0));
    sum += SceneTextureLookup(pos, TexIndex, false);
}
sum *= 1.0/11.0;
return sum;


Material Nodes:



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   Begin Object Class=MaterialExpressionCustom Name="MaterialExpressionCustom_0"
   End Object
   Begin Object Name="MaterialExpressionCustom_0"
      Code="int TexIndex = 14;
float samples[10] = {-0.08,-0.05,-0.03,-0.02,-0.01,0.01,0.02,0.03,0.05,0.08};
float2 dir = ScreenMult * float2(0.5,0.5) - UV; 
float4 sum = SceneTextureLookup(UV, TexIndex, false);
float2 pos = float2(0.0,0.0);
for(int i = 0; i<10; i++)
{
    pos = UV + dir * samples* * SampleDist;
    max(min(pos, ScreenMult * float2(1.0, 1.0)), float2(0.0,0.0));
    sum += SceneTextureLookup(pos, TexIndex, false);
}
sum *= 1.0/11.0;
return sum;"
      OutputType=CMOT_Float4
      Description="RadialBlur"
      Inputs(0)=(InputName="UV",Input=(Expression=MaterialExpressionScreenPosition'MaterialGraphNode_20.MaterialExpressionScreenPosition_0'))
      Inputs(1)=(InputName="SampleDist",Input=(Expression=MaterialExpressionScalarParameter'MaterialGraphNode_23.MaterialExpressionScalarParameter_0'))
      Inputs(2)=(InputName="ScreenMult",Input=(Expression=MaterialExpressionDivide'MaterialGraphNode_30.MaterialExpressionDivide_1'))
      MaterialExpressionEditorX=-480
      MaterialExpressionGuid=B6DFB993455890C7BAA545B1D02B4D57
      Material=PreviewMaterial'/Engine/Transient.M_PostProcess_RadialBlur2017'
      Desc="
*** Original source before expression upgrade ***
float2 ScreenMult = GetPostProcessInputSize(0).xy / View.RenderTargetSize;
int TexIndex = 14;
float samples[10] = {-0.08,-0.05,-0.03,-0.02,-0.01,0.01,0.02,0.03,0.05,0.08};
float2 dir = ScreenMult * float2(0.5,0.5) - UV; 
float4 sum = SceneTextureLookup(UV, TexIndex, false);
float2 pos = float2(0.0,0.0);
for(int i = 0; i<10; i++)
{
    pos = UV + dir * samples* * SampleDist;
    max(min(pos, ScreenMult * float2(1.0, 1.0)), float2(0.0,0.0));
    sum += SceneTextureLookup(pos, TexIndex, false);
}
sum *= 1.0/11.0;
return sum;"
      bCollapsed=True
   End Object
   MaterialExpression=MaterialExpressionCustom'MaterialExpressionCustom_0'
   NodePosX=-480
   NodeComment="
*** Original source before expression upgrade ***
float2 ScreenMult = GetPostProcessInputSize(0).xy / View.RenderTargetSize;
int TexIndex = 14;
float samples[10] = {-0.08,-0.05,-0.03,-0.02,-0.01,0.01,0.02,0.03,0.05,0.08};
float2 dir = ScreenMult * float2(0.5,0.5) - UV; 
float4 sum = SceneTextureLookup(UV, TexIndex, false);
float2 pos = float2(0.0,0.0);
for(int i = 0; i<10; i++)
{
    pos = UV + dir * samples* * SampleDist;
    max(min(pos, ScreenMult * float2(1.0, 1.0)), float2(0.0,0.0));
    sum += SceneTextureLookup(pos, TexIndex, false);
}
sum *= 1.0/11.0;
return sum;"
   ErrorType=1
   ErrorMsg="Custom material RadialBlur missing input 4 (sampleDist)"
   NodeGuid=ACBF390447C84AFFC1928AA713EEEA25
   CustomProperties Pin (PinId=177AC35542836CE758FB9C8DEB695A7C,PinName="UV",PinType.PinCategory="required",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,LinkedTo=(MaterialGraphNode_20 6453A44C47ED645881A848845A747D11,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,)
   CustomProperties Pin (PinId=616746A846CB06B17489E2928E7A3974,PinName="SampleDist",PinType.PinCategory="required",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,LinkedTo=(MaterialGraphNode_23 96090C784D9795E196869AABD469FB0F,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,)
   CustomProperties Pin (PinId=AA67DC214D4A7D398A5433B3DB137C08,PinName="ScreenMult",PinType.PinCategory="required",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,LinkedTo=(MaterialGraphNode_30 919A20844B2A345CF750D6B75A76B6BB,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,)
   CustomProperties Pin (PinId=2AC08E4E4954B2F0ACC56A8142DA97C2,PinName="Output",PinFriendlyName=" ",Direction="EGPD_Output",PinType.PinCategory="",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,LinkedTo=(MaterialGraphNode_19 9CCF75AB40AE88EEA9545CB567EAE9EA,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,)
End Object
Begin Object Class=MaterialGraphNode Name="MaterialGraphNode_23"
   Begin Object Class=MaterialExpressionScalarParameter Name="MaterialExpressionScalarParameter_0"
   End Object
   Begin Object Name="MaterialExpressionScalarParameter_0"
      DefaultValue=0.400000
      ParameterName="BlurAmount"
      ExpressionGUID=87FFC26A4E27FD512C77E290396F7DBD
      MaterialExpressionEditorX=-656
      MaterialExpressionEditorY=48
      MaterialExpressionGuid=D865857F4D4247CCA5D256B0E5EE7780
      Material=PreviewMaterial'/Engine/Transient.M_PostProcess_RadialBlur2017'
   End Object
   MaterialExpression=MaterialExpressionScalarParameter'MaterialExpressionScalarParameter_0'
   NodePosX=-656
   NodePosY=48
   bCanRenameNode=True
   NodeGuid=95BE919643F23934E6F70E83898DEA4E
   CustomProperties Pin (PinId=96090C784D9795E196869AABD469FB0F,PinName="Output",PinFriendlyName=" ",Direction="EGPD_Output",PinType.PinCategory="",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,LinkedTo=(MaterialGraphNode_22 616746A846CB06B17489E2928E7A3974,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,)
End Object
Begin Object Class=MaterialGraphNode Name="MaterialGraphNode_24"
   Begin Object Class=MaterialExpressionMaterialFunctionCall Name="MaterialExpressionMaterialFunctionCall_3"
   End Object
   Begin Object Name="MaterialExpressionMaterialFunctionCall_3"
      MaterialFunction=MaterialFunction'/Engine/Functions/Engine_MaterialFunctions02/Texturing/ScreenAlignedUVs.ScreenAlignedUVs'
      FunctionInputs(0)=(ExpressionInputId=171B9A424E2AFE2A77A885B10D226783,Input=(Expression=MaterialExpressionScreenPosition'MaterialGraphNode_20.MaterialExpressionScreenPosition_0',InputName="Texture Dimensions"))
      FunctionOutputs(0)=(ExpressionOutputId=0B62F82A4407238F0BA4FE86805D8B50,Output=(OutputName="X 100%, Y 100%"))
      FunctionOutputs(1)=(ExpressionOutputId=454DEEEF4E56FE982167C3BFB1A643DB,Output=(OutputName="X 100%, Y Scale to Ratio"))
      FunctionOutputs(2)=(ExpressionOutputId=062C44A6472525194EA716AA80688F9D,Output=(OutputName="X Scale to Ratio, Y 100%"))
      MaterialExpressionEditorX=-864
      MaterialExpressionEditorY=320
      MaterialExpressionGuid=98969B6F4B879034F9AD6F8A776EB2CF
      Material=PreviewMaterial'/Engine/Transient.M_PostProcess_RadialBlur2017'
      Outputs(0)=(OutputName="X 100%, Y 100%")
      Outputs(1)=(OutputName="X 100%, Y Scale to Ratio")
      Outputs(2)=(OutputName="X Scale to Ratio, Y 100%")
   End Object
   MaterialExpression=MaterialExpressionMaterialFunctionCall'MaterialExpressionMaterialFunctionCall_3'
   NodePosX=-864
   NodePosY=320
   NodeGuid=12F9EEA24B5E4AA8FE6AADA789D63535
   CustomProperties Pin (PinId=206841EE487E15DE005888894B5B3A9F,PinName="Texture Dimensions (V2)",PinType.PinCategory="optional",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,LinkedTo=(MaterialGraphNode_20 6453A44C47ED645881A848845A747D11,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,)
   CustomProperties Pin (PinId=B5616A6940385E6BEC8E67B110B29592,PinName="X 100%, Y 100%",Direction="EGPD_Output",PinType.PinCategory="",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,LinkedTo=(MaterialGraphNode_25 AA4E585F49F84B8BC92C00A8BBFAD786,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,)
   CustomProperties Pin (PinId=88B4FFDA48793FEE9C53E3AEB98F2D9E,PinName="X 100%, Y Scale to Ratio",Direction="EGPD_Output",PinType.PinCategory="",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,)
   CustomProperties Pin (PinId=DA837BEF45D9C72B93F3D393907D5F71,PinName="X Scale to Ratio, Y 100%",Direction="EGPD_Output",PinType.PinCategory="",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,)
End Object
Begin Object Class=MaterialGraphNode Name="MaterialGraphNode_25"
   Begin Object Class=MaterialExpressionMaterialFunctionCall Name="MaterialExpressionMaterialFunctionCall_4"
   End Object
   Begin Object Name="MaterialExpressionMaterialFunctionCall_4"
      MaterialFunction=MaterialFunction'/Engine/Functions/Engine_MaterialFunctions01/Gradient/RadialGradientExponential.RadialGradientExponential'
      FunctionInputs(0)=(ExpressionInputId=D38E6C0F499293F6CC65C0AE55AE0D4E,Input=(Expression=MaterialExpressionMaterialFunctionCall'MaterialGraphNode_24.MaterialExpressionMaterialFunctionCall_3',InputName="UVs"))
      FunctionInputs(1)=(ExpressionInputId=2997555B436C735459B9D695B58F219E,Input=(OutputIndex=-1,InputName="CenterPosition"))
      FunctionInputs(2)=(ExpressionInputId=B330351C4B254660CCDCA5923C8F3F26,Input=(Expression=MaterialExpressionScalarParameter'MaterialGraphNode_26.MaterialExpressionScalarParameter_1',InputName="Radius"))
      FunctionInputs(3)=(ExpressionInputId=2B61E834449DAE3BC4D079B953B5DE0E,Input=(Expression=MaterialExpressionScalarParameter'MaterialGraphNode_27.MaterialExpressionScalarParameter_2',InputName="Density"))
      FunctionInputs(4)=(ExpressionInputId=7D5AC5254448D12A92351AA36BEED90A,Input=(OutputIndex=-1,InputName="Invert Density"))
      FunctionOutputs(0)=(ExpressionOutputId=8D0763534D7AAC86623FB1AE8CD0CC39,Output=(OutputName="RadialGradientExponential"))
      MaterialExpressionEditorX=-512
      MaterialExpressionEditorY=416
      MaterialExpressionGuid=5249FC1140C4BF1C89A75C8FC79CADE0
      Material=PreviewMaterial'/Engine/Transient.M_PostProcess_RadialBlur2017'
      Outputs(0)=(OutputName="RadialGradientExponential")
   End Object
   MaterialExpression=MaterialExpressionMaterialFunctionCall'MaterialExpressionMaterialFunctionCall_4'
   NodePosX=-512
   NodePosY=416
   NodeGuid=9CEC110447EE7FF35539B8967F22BA97
   CustomProperties Pin (PinId=AA4E585F49F84B8BC92C00A8BBFAD786,PinName="UVs (V2)",PinType.PinCategory="optional",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,LinkedTo=(MaterialGraphNode_24 B5616A6940385E6BEC8E67B110B29592,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,)
   CustomProperties Pin (PinId=A25D34CD41971EE91074E98AA808828D,PinName="CenterPosition (V2)",PinType.PinCategory="optional",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,)
   CustomProperties Pin (PinId=64F5A3384EEE6B638DD4E59217AA6F87,PinName="Radius (S)",PinType.PinCategory="optional",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,LinkedTo=(MaterialGraphNode_26 ADD6D5C24C9DCE4714FAE0B49796CAC8,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,)
   CustomProperties Pin (PinId=460C45C9474EF6EBB47653B2014A9FCF,PinName="Density (S)",PinType.PinCategory="optional",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,LinkedTo=(MaterialGraphNode_27 939CD9664844BBCE62B16BBCDB21DFF0,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,)
   CustomProperties Pin (PinId=EBDC1A0F47E208FDDFA05EA73EF4B5E7,PinName="Invert Density (B)",PinType.PinCategory="optional",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,)
   CustomProperties Pin (PinId=510D57C742550B7BFE48EF82F95F11F3,PinName="RadialGradientExponential",Direction="EGPD_Output",PinType.PinCategory="",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,LinkedTo=(MaterialGraphNode_19 0413550A4D5787480B2908ACB2CCD942,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,)
End Object
Begin Object Class=MaterialGraphNode Name="MaterialGraphNode_26"
   Begin Object Class=MaterialExpressionScalarParameter Name="MaterialExpressionScalarParameter_1"
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   Begin Object Name="MaterialExpressionScalarParameter_1"
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      ParameterName="BlurRadius"
      ExpressionGUID=14CEA299455A9BD9DEC4F6AC9C9E3769
      MaterialExpressionEditorX=-1024
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      MaterialExpressionGuid=EFEF8E50429ABB12D8E61CBC0E726D50
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   MaterialExpression=MaterialExpressionScalarParameter'MaterialExpressionScalarParameter_1'
   NodePosX=-1024
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   CustomProperties Pin (PinId=ADD6D5C24C9DCE4714FAE0B49796CAC8,PinName="Output",PinFriendlyName=" ",Direction="EGPD_Output",PinType.PinCategory="",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,LinkedTo=(MaterialGraphNode_25 64F5A3384EEE6B638DD4E59217AA6F87,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,)
End Object
Begin Object Class=MaterialGraphNode Name="MaterialGraphNode_27"
   Begin Object Class=MaterialExpressionScalarParameter Name="MaterialExpressionScalarParameter_2"
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   Begin Object Name="MaterialExpressionScalarParameter_2"
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      MaterialExpressionEditorX=-1024
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      MaterialExpressionGuid=7F1951BE4D6B4D01721363BD02870009
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   NodePosX=-1024
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   NodeGuid=8C1CD32C41EFE44E221BA595AE2229B0
   CustomProperties Pin (PinId=939CD9664844BBCE62B16BBCDB21DFF0,PinName="Output",PinFriendlyName=" ",Direction="EGPD_Output",PinType.PinCategory="",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,LinkedTo=(MaterialGraphNode_25 460C45C9474EF6EBB47653B2014A9FCF,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,)
End Object
Begin Object Class=MaterialGraphNode Name="MaterialGraphNode_28"
   Begin Object Class=MaterialExpressionViewSize Name="MaterialExpressionViewSize_1"
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   Begin Object Name="MaterialExpressionViewSize_1"
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   NodePosX=-1024
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End Object
Begin Object Class=MaterialGraphNode Name="MaterialGraphNode_29"
   Begin Object Class=MaterialExpressionMaterialFunctionCall Name="MaterialExpressionMaterialFunctionCall_5"
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   Begin Object Name="MaterialExpressionMaterialFunctionCall_5"
      MaterialFunction=MaterialFunction'/Engine/Functions/Engine_MaterialFunctions02/ScreenResolution.ScreenResolution'
      FunctionOutputs(0)=(ExpressionOutputId=D21EB3BE4C1789227FDE70B7A16D9AE8,Output=(OutputName="Visible Resolution"))
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      Outputs(0)=(OutputName="Visible Resolution")
      Outputs(1)=(OutputName="Buffer Resolution")
   End Object
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   CustomProperties Pin (PinId=ABD63BA1483EA3FCEAA7DDA9934CF06B,PinName="Visible Resolution",Direction="EGPD_Output",PinType.PinCategory="",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,)
   CustomProperties Pin (PinId=446D6EE54E4C55D8D8213A8EDBAAA1E6,PinName="Buffer Resolution",Direction="EGPD_Output",PinType.PinCategory="",PinType.PinSubCategory="",PinType.PinSubCategoryObject=None,PinType.PinSubCategoryMemberReference=(),PinType.PinValueType=(),PinType.bIsMap=False,PinType.bIsSet=False,PinType.bIsArray=False,PinType.bIsReference=False,PinType.bIsConst=False,PinType.bIsWeakPointer=False,LinkedTo=(MaterialGraphNode_30 2DEC1D0F470001B3F65D879EB69654F7,),PersistentGuid=00000000000000000000000000000000,bHidden=False,bNotConnectable=False,bDefaultValueIsReadOnly=False,bDefaultValueIsIgnored=False,bAdvancedView=False,)
End Object
Begin Object Class=MaterialGraphNode Name="MaterialGraphNode_30"
   Begin Object Class=MaterialExpressionDivide Name="MaterialExpressionDivide_1"
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   Begin Object Name="MaterialExpressionDivide_1"
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   MaterialExpression=MaterialExpressionDivide'MaterialExpressionDivide_1'
   NodePosX=-832
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Enjoy!

Thanks, Kory! That code works perfectly for me. I’ve been trying to figure this one out for a while. BIG BIG THANKS!

Got this working in VR by multiplying the effect by two, one for each eye then mapping it all in UV space from 0 to 2.

Hey there Kory (or anyone else). I’ve set up everything the same as above, save one thing. Where do I enter the material nodes code? Do I have to make a new code class? Sorry, I’m not very technical and I’ve been trying to get this to work for a while. Having done everything besides the material node code, I get this error:

fffc8cd23c273886a2dd9d8a3306a90a0e9f24cd.png

Cheers.

If you look at your code you’ll see you have sampleDist with a small s and it is complaining about not finding SampleDist with a big S. Change one or the other and you’ll get it to work.

Ah, thank you so much. No error. I’m still not seeing the effect though. I’m using the Rendering features in a camera component instead of a volume (it’s actually a child actor with a camera component attached to the player pawn). Would this require a different kind of implementation?

e1db25bf0bcc67185dc5245dfa264bdafd5c125d.png

I created a material instance like you did, with the same parameters, and have that as my post process material. Do I have to activate the PP materials some way (other than setting it’s weight to 1)?

Don’t worry, I’ve got it. It’s just that I’m modifying other cam values which seems to be affecting it. Cheers for your help.

Since I’ve got the Blur working correctly I’ve run into another issue. The blur doesn’t work correctly for split screen. I tracked down this thread: Post Processing doesn't work in splitscreen - Multiplayer & Networking - Unreal Engine Forums where they say that post processing isn’t working for split screen. Is this really the case? Is there any way for me to overcome this?

Is there a version for 4.15 and up? Because some of the nodes cannot be found!