Fur shader with alpha transparency

MikeF

So i'm doing some work that would really take advantage of this fur shader http://unifycommunity.com/wiki/index.php?title=Fur_(Unity3)

rite now the alpha controls where the fur emits from the mesh, but on masked areas it just turns black instead of transparent, which is what i need.

i'm not very well versed in unity's shader language so i'm not sure if this is possible, but any suggestions would be most appreciated

MikeF

and heres the shader incase you dont care to download it


Shader "Fur"
{
Properties
{
_FurLength ("Fur Length", Range (.0002, 1)) = .25
_MainTex ("Base (RGB)", 2D) = "white" { }
_Cutoff ("Alpha Cutoff", Range (0, 1)) = .0001
_EdgeFade ("Edge Fade", Range(0,1)) = 0.4
_LightDirection0 ("Light Direction 0, Ambient", Vector) = (1,0,0,1)
_MyLightColor0 ("Light Color 0", Color) = (1,1,1,1)
_LightDirection1 ("Light Direction 1, Ambient", Vector) = (1,0,0,1)
_MyLightColor1 ("Light Color 1", Color) = (1,1,1,1)
}
Category
{
ZWrite Off
Tags {"Queue" = "Transparent"}
Blend SrcAlpha OneMinusSrcAlpha
Alphatest Greater [_Cutoff]
SubShader
{



Pass
{
ZWrite On


CGPROGRAM
// Upgrade NOTE: excluded shader from OpenGL ES 2.0 because it does not contain a surface program or both vertex and fragment programs.
#pragma exclude_renderers gles
#pragma vertex VertexProgram
#include "FurHelpers.cginc"

v2f VertexProgram (appdata_base v)
{
v2f o;
FurVertexPass(0, v, _FurLength, o.pos, o.fog, o.color, o.uv);
return o;
}
ENDCG
SetTexture [_MainTex]
{
constantColor(1,1,1,1)
combine texture * primary double, constant
}
}
Pass
{
CGPROGRAM
// Upgrade NOTE: excluded shader from OpenGL ES 2.0 because it does not contain a surface program or both vertex and fragment programs.
#pragma exclude_renderers gles
#pragma vertex VertexProgram
#include "FurHelpers.cginc"

v2f VertexProgram (appdata_base v)
{
v2f o;
FurVertexPass(0.05, v, _FurLength, o.pos, o.fog, o.color, o.uv);
return o;
}
ENDCG
SetTexture [_MainTex]
{
combine texture * primary double, texture * primary
}
}
Pass
{
CGPROGRAM
// Upgrade NOTE: excluded shader from OpenGL ES 2.0 because it does not contain a surface program or both vertex and fragment programs.
#pragma exclude_renderers gles
#pragma vertex VertexProgram
#include "FurHelpers.cginc"

v2f VertexProgram (appdata_base v)
{
v2f o;
FurVertexPass(0.1, v, _FurLength, o.pos, o.fog, o.color, o.uv);
return o;
}
ENDCG
SetTexture [_MainTex]
{
combine texture * primary double, texture * primary
}
}
Pass
{
CGPROGRAM
// Upgrade NOTE: excluded shader from OpenGL ES 2.0 because it does not contain a surface program or both vertex and fragment programs.
#pragma exclude_renderers gles
#pragma vertex VertexProgram
#include "FurHelpers.cginc"

v2f VertexProgram (appdata_base v)
{
v2f o;
FurVertexPass(0.15, v, _FurLength, o.pos, o.fog, o.color, o.uv);
return o;
}
ENDCG
SetTexture [_MainTex]
{
combine texture * primary double, texture * primary
}
}
Pass
{
CGPROGRAM
// Upgrade NOTE: excluded shader from OpenGL ES 2.0 because it does not contain a surface program or both vertex and fragment programs.
#pragma exclude_renderers gles
#pragma vertex VertexProgram
#include "FurHelpers.cginc"

v2f VertexProgram (appdata_base v)
{
v2f o;
FurVertexPass(0.2, v, _FurLength, o.pos, o.fog, o.color, o.uv);
return o;
}
ENDCG
SetTexture [_MainTex]
{
combine texture * primary double, texture * primary
}
}
Pass
{
CGPROGRAM
// Upgrade NOTE: excluded shader from OpenGL ES 2.0 because it does not contain a surface program or both vertex and fragment programs.
#pragma exclude_renderers gles
#pragma vertex VertexProgram
#include "FurHelpers.cginc"

v2f VertexProgram (appdata_base v)
{
v2f o;
FurVertexPass(0.25, v, _FurLength, o.pos, o.fog, o.color, o.uv);
return o;
}
ENDCG
SetTexture [_MainTex]
{
combine texture * primary double, texture * primary
}
}
Pass
{
CGPROGRAM
// Upgrade NOTE: excluded shader from OpenGL ES 2.0 because it does not contain a surface program or both vertex and fragment programs.
#pragma exclude_renderers gles
#pragma vertex VertexProgram
#include "FurHelpers.cginc"

v2f VertexProgram (appdata_base v)
{
v2f o;
FurVertexPass(0.3, v, _FurLength, o.pos, o.fog, o.color, o.uv);
return o;
}
ENDCG
SetTexture [_MainTex]
{
combine texture * primary double, texture * primary
}
}
Pass
{
CGPROGRAM
// Upgrade NOTE: excluded shader from OpenGL ES 2.0 because it does not contain a surface program or both vertex and fragment programs.
#pragma exclude_renderers gles
#pragma vertex VertexProgram
#include "FurHelpers.cginc"

v2f VertexProgram (appdata_base v)
{
v2f o;
FurVertexPass(0.35, v, _FurLength, o.pos, o.fog, o.color, o.uv);
return o;
}
ENDCG
SetTexture [_MainTex]
{
combine texture * primary double, texture * primary
}
}
Pass
{
CGPROGRAM
// Upgrade NOTE: excluded shader from OpenGL ES 2.0 because it does not contain a surface program or both vertex and fragment programs.
#pragma exclude_renderers gles
#pragma vertex VertexProgram
#include "FurHelpers.cginc"

v2f VertexProgram (appdata_base v)
{
v2f o;
FurVertexPass(0.4, v, _FurLength, o.pos, o.fog, o.color, o.uv);
return o;
}
ENDCG
SetTexture [_MainTex]
{
combine texture * primary double, texture * primary
}
}
Pass
{
CGPROGRAM
// Upgrade NOTE: excluded shader from OpenGL ES 2.0 because it does not contain a surface program or both vertex and fragment programs.
#pragma exclude_renderers gles
#pragma vertex VertexProgram
#include "FurHelpers.cginc"

v2f VertexProgram (appdata_base v)
{
v2f o;
FurVertexPass(0.45, v, _FurLength, o.pos, o.fog, o.color, o.uv);
return o;
}
ENDCG
SetTexture [_MainTex]
{
combine texture * primary double, texture * primary
}
}
Pass
{
CGPROGRAM
// Upgrade NOTE: excluded shader from OpenGL ES 2.0 because it does not contain a surface program or both vertex and fragment programs.
#pragma exclude_renderers gles
#pragma vertex VertexProgram
#include "FurHelpers.cginc"

v2f VertexProgram (appdata_base v)
{
v2f o;
FurVertexPass(0.5, v, _FurLength, o.pos, o.fog, o.color, o.uv);
return o;
}
ENDCG
SetTexture [_MainTex]
{
combine texture * primary double, texture * primary
}
}
Pass
{
CGPROGRAM
// Upgrade NOTE: excluded shader from OpenGL ES 2.0 because it does not contain a surface program or both vertex and fragment programs.
#pragma exclude_renderers gles
#pragma vertex VertexProgram
#include "FurHelpers.cginc"

v2f VertexProgram (appdata_base v)
{
v2f o;
FurVertexPass(0.55, v, _FurLength, o.pos, o.fog, o.color, o.uv);
return o;
}
ENDCG
SetTexture [_MainTex]
{
combine texture * primary double, texture * primary
}
}
Pass
{
CGPROGRAM
// Upgrade NOTE: excluded shader from OpenGL ES 2.0 because it does not contain a surface program or both vertex and fragment programs.
#pragma exclude_renderers gles
#pragma vertex VertexProgram
#include "FurHelpers.cginc"

v2f VertexProgram (appdata_base v)
{
v2f o;
FurVertexPass(0.60, v, _FurLength, o.pos, o.fog, o.color, o.uv);
return o;
}
ENDCG
SetTexture [_MainTex]
{
combine texture * primary double, texture * primary
}
}
Pass
{
CGPROGRAM
// Upgrade NOTE: excluded shader from OpenGL ES 2.0 because it does not contain a surface program or both vertex and fragment programs.
#pragma exclude_renderers gles
#pragma vertex VertexProgram
#include "FurHelpers.cginc"

v2f VertexProgram (appdata_base v)
{
v2f o;
FurVertexPass(0.65, v, _FurLength, o.pos, o.fog, o.color, o.uv);
return o;
}
ENDCG
SetTexture [_MainTex]
{
combine texture * primary double, texture * primary
}
}
Pass
{
CGPROGRAM
// Upgrade NOTE: excluded shader from OpenGL ES 2.0 because it does not contain a surface program or both vertex and fragment programs.
#pragma exclude_renderers gles
#pragma vertex VertexProgram
#include "FurHelpers.cginc"

v2f VertexProgram (appdata_base v)
{
v2f o;
FurVertexPass(0.70, v, _FurLength, o.pos, o.fog, o.color, o.uv);
return o;
}
ENDCG
SetTexture [_MainTex]
{
combine texture * primary double, texture * primary
}
}
Pass
{
CGPROGRAM
// Upgrade NOTE: excluded shader from OpenGL ES 2.0 because it does not contain a surface program or both vertex and fragment programs.
#pragma exclude_renderers gles
#pragma vertex VertexProgram
#include "FurHelpers.cginc"

v2f VertexProgram (appdata_base v)
{
v2f o;
FurVertexPass(0.75, v, _FurLength, o.pos, o.fog, o.color, o.uv);
return o;
}
ENDCG
SetTexture [_MainTex]
{
combine texture * primary double, texture * primary
}
}
Pass
{
CGPROGRAM
// Upgrade NOTE: excluded shader from OpenGL ES 2.0 because it does not contain a surface program or both vertex and fragment programs.
#pragma exclude_renderers gles
#pragma vertex VertexProgram
#include "FurHelpers.cginc"

v2f VertexProgram (appdata_base v)
{
v2f o;
FurVertexPass(0.8, v, _FurLength, o.pos, o.fog, o.color, o.uv);
return o;
}
ENDCG
SetTexture [_MainTex]
{
combine texture * primary double, texture * primary
}
}
Pass
{
CGPROGRAM
// Upgrade NOTE: excluded shader from OpenGL ES 2.0 because it does not contain a surface program or both vertex and fragment programs.
#pragma exclude_renderers gles
#pragma vertex VertexProgram
#include "FurHelpers.cginc"

v2f VertexProgram (appdata_base v)
{
v2f o;
FurVertexPass(0.85, v, _FurLength, o.pos, o.fog, o.color, o.uv);
return o;
}
ENDCG
SetTexture [_MainTex]
{
combine texture * primary double, texture * primary
}
}
Pass
{
CGPROGRAM
// Upgrade NOTE: excluded shader from OpenGL ES 2.0 because it does not contain a surface program or both vertex and fragment programs.
#pragma exclude_renderers gles
#pragma vertex VertexProgram
#include "FurHelpers.cginc"

v2f VertexProgram (appdata_base v)
{
v2f o;
FurVertexPass(0.9, v, _FurLength, o.pos, o.fog, o.color, o.uv);
return o;
}
ENDCG
SetTexture [_MainTex]
{
combine texture * primary double, texture * primary
}
}
Pass
{
CGPROGRAM
// Upgrade NOTE: excluded shader from OpenGL ES 2.0 because it does not contain a surface program or both vertex and fragment programs.
#pragma exclude_renderers gles
#pragma vertex VertexProgram
#include "FurHelpers.cginc"

v2f VertexProgram (appdata_base v)
{
v2f o;
FurVertexPass(0.95, v, _FurLength, o.pos, o.fog, o.color, o.uv);
return o;
}
ENDCG
SetTexture [_MainTex]
{
combine texture * primary double, texture * primary
}
}
}
Fallback " VertexLit", 1
}
}

steviebops

Did you ever get that transparency working? I would love try it.

MikeF

sorry man, it was a pretty messy shader to begin with so i abandoned the idea shortly after

wodehia

Interesting post.