duck

Shader "RD/Particle/Additive" {
Properties {
    _TintColor ("Tint Color", Color) = (0.5,0.5,0.5,0.5)
    _MainTex ("Particle Texture", 2D) = "white" {}
}

Category {
    Tags { "Queue"="Transparent+10" "IgnoreProjector"="True" "RenderType"="Transparent" }
    Blend SrcAlpha One
    ColorMask RGBA
    Cull Off Lighting Off ZWrite Off Fog { Color (0,0,0,0) }
    BindChannels {
        Bind "Color", color
        Bind "Vertex", vertex
        Bind "TexCoord", texcoord
    }

    // ---- 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
            }
        }
    }
}
}