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Question by MSFX · Mar 14, 2013 at 03:55 PM · shaderalphacutoutself-illumination

Changing AlphaSelfIllum Shader to use Cutout?

I'm currently using the AlphaSelfIllum shader found here within a project however the edges end up with a faint white outline and quite blurry as shown below...

alt text

I've tried using a Transparent->Cutout->Diffuse shader and the edges are far crisper and don't have the white outline, this is perfect except it's not self illuminated.

alt text

How can I adjust the AlphaSelfIllum shader to use this cutout method? I've never done any shader programming before so don't really know what I'm looking for in order to get this to work...

Thanks!

alphaselfillum.png (86.9 kB)
cutoutdiffuse.png (29.3 kB)
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Answer by equil · Mar 18, 2013 at 09:15 PM

this should do the trick:

Shader "My Shaders/CutoutSelfIllum" {
    Properties {
        _Color ("Color Tint", Color) = (1,1,1,1)
        _Cutoff ("Alpha cutoff", Range(0,1)) = 0.5
        _MainTex ("SelfIllum Color (RGB) Alpha (A)", 2D) = "white"
    }
    Category {
       Lighting On
       ZWrite Off
       Cull Back
       Tags { "Queue"="AlphaTest" "IgnoreProjector"="True" "RenderType"="TransparentCutout" }
       Alphatest Greater [_Cutoff]
       SubShader {
            Material {
               Emission [_Color]
            }
            Pass {
               SetTexture [_MainTex] {
                      Combine Texture * Primary, Texture * Primary
                }
            }
        } 
    }
}

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Answer by MSFX · Mar 27, 2013 at 09:52 PM

thanks for the response!

that works but I still get a nasty edge... it's nowhere near as nice as the edge when just using a diffuse... :s

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