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additive particle shader

hey

At the moment I'm using the particles/additive shader in a material to be used with a particle effect I'm making. However I want to make this shader not effected by fog. I know how to do that but I can't find the shader code for the particles/additive shader. I've downloaded some of the shader codes from this webpage but none of the ones I've download have the shader code for particles/additive. (I've tried unity 4, 3.5.7 and 3 shaders). Is there a place if any where I can get the code for this shader.

Thanks

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asked Dec 31, 2012 at 10:41 PM

SP0KK0 gravatar image

SP0KK0
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2 answers: sort voted first

I have the Particles/Additive shader in the package I downloaded, but I don't remember the exact place I got it from...

Anyways, here you go:

 Shader "Particles/Additive" {
 Properties {
     _TintColor ("Tint Color", Color) = (0.5,0.5,0.5,0.5)
     _MainTex ("Particle Texture", 2D) = "white" {}
     _InvFade ("Soft Particles Factor", Range(0.01,3.0)) = 1.0
 }
 
 Category {
     Tags { "Queue"="Transparent" "IgnoreProjector"="True" "RenderType"="Transparent" }
     Blend SrcAlpha One
     AlphaTest Greater .01
     ColorMask RGB
     Cull Off Lighting Off ZWrite Off Fog { Color (0,0,0,0) }
     BindChannels {
         Bind "Color", color
         Bind "Vertex", vertex
         Bind "TexCoord", texcoord
     }
     
     // ---- Fragment program cards
     SubShader {
         Pass {
         
             CGPROGRAM
             #pragma vertex vert
             #pragma fragment frag
             #pragma fragmentoption ARB_precision_hint_fastest
             #pragma multi_compile_particles
 
             #include "UnityCG.cginc"
 
             sampler2D _MainTex;
             fixed4 _TintColor;
             
             struct appdata_t {
                 float4 vertex : POSITION;
                 fixed4 color : COLOR;
                 float2 texcoord : TEXCOORD0;
             };
 
             struct v2f {
                 float4 vertex : POSITION;
                 fixed4 color : COLOR;
                 float2 texcoord : TEXCOORD0;
                 #ifdef SOFTPARTICLES_ON
                 float4 projPos : TEXCOORD1;
                 #endif
             };
             
             float4 _MainTex_ST;
 
             v2f vert (appdata_t v)
             {
                 v2f o;
                 o.vertex = mul(UNITY_MATRIX_MVP, v.vertex);
                 #ifdef SOFTPARTICLES_ON
                 o.projPos = ComputeScreenPos (o.vertex);
                 COMPUTE_EYEDEPTH(o.projPos.z);
                 #endif
                 o.color = v.color;
                 o.texcoord = TRANSFORM_TEX(v.texcoord,_MainTex);
                 return o;
             }
 
             sampler2D _CameraDepthTexture;
             float _InvFade;
             
             fixed4 frag (v2f i) : COLOR
             {
                 #ifdef SOFTPARTICLES_ON
                 float sceneZ = LinearEyeDepth (UNITY_SAMPLE_DEPTH(tex2Dproj(_CameraDepthTexture, UNITY_PROJ_COORD(i.projPos))));
                 float partZ = i.projPos.z;
                 float fade = saturate (_InvFade * (sceneZ-partZ));
                 i.color.a *= fade;
                 #endif
                 
                 return 2.0f * i.color * _TintColor * tex2D(_MainTex, i.texcoord);
             }
             ENDCG 
         }
     }     
     
     // ---- Dual texture cards
     SubShader {
         Pass {
             SetTexture [_MainTex] {
                 constantColor [_TintColor]
                 combine constant * primary
             }
             SetTexture [_MainTex] {
                 combine texture * previous DOUBLE
             }
         }
     }
     
     // ---- Single texture cards (does not do color tint)
     SubShader {
         Pass {
             SetTexture [_MainTex] {
                 combine texture * primary
             }
         }
     }
 }
 }
 
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answered Dec 31, 2012 at 11:04 PM

Piflik gravatar image

Piflik
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(At least in Unity 3.5.6) "particles/additive" is called "Particle Add.shader" in the "DefaultResources" folder. http://unity3d.com/unity/download/archive

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answered Dec 31, 2012 at 11:07 PM

jogo13 gravatar image

jogo13
596 1 3 5

cheers guys, thanks, that's just what I needed

Dec 31, 2012 at 11:09 PM SP0KK0
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asked: Dec 31, 2012 at 10:41 PM

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Last Updated: Dec 31, 2012 at 11:09 PM