AlphaDiffuse2sided

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ShaderLab - Alpha-Diffuse-2sided.shader

Slightly modifed default shader for doing 2-sided renders

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Shader "Transparent/Diffuse-2sided" {
Properties {
	_Color ("Main Color", Color) = (1,1,1,1)
	_MainTex ("Base (RGB) Trans (A)", 2D) = "white" {}
}

Category {
	Tags {"Queue"="Transparent" "IgnoreProjector"="True" "RenderType"="Transparent"}
	LOD 200
	Alphatest Greater 0
	ZWrite Off
	ColorMask RGB
	
	// ------------------------------------------------------------------
	// ARB fragment program
	
	SubShader {
		// Ambient pass
		Pass {
			Name "BASE"
			Tags {"LightMode" = "PixelOrNone"}
			Cull Off
			Fog { Color [_AddFog] }
			Blend SrcAlpha OneMinusSrcAlpha
			Color [_PPLAmbient]
			SetTexture [_MainTex] {constantColor [_Color] Combine texture * primary DOUBLE, texture * primary}
		}
		// Vertex lights
		Pass { 
			Name "BASE"
			Cull Off
			Tags {"LightMode" = "Vertex"}
			Fog { Color [_AddFog] }
			Blend SrcAlpha OneMinusSrcAlpha
			Lighting On
			Material {
				Diffuse [_Color]
				Emission [_PPLAmbient]
			} 
			SetTexture [_MainTex] {combine texture * primary DOUBLE, texture * primary}
		}
		// Pixel lights
		Pass {	
			Name "PPL"
			Tags { "LightMode" = "Pixel" }
			Blend SrcAlpha One
			Fog { Color [_AddFog] }
			Cull Off

CGPROGRAM
#pragma fragment frag
#pragma vertex vert
#pragma multi_compile_builtin_noshadows
#pragma fragmentoption ARB_fog_exp2
#pragma fragmentoption ARB_precision_hint_fastest
#include "UnityCG.cginc"
#include "AutoLight.cginc"

struct v2f {
	V2F_POS_FOG;
	LIGHTING_COORDS
	float2	uv;
	float3	normal;
	float3	lightDir;
};

uniform float4 _MainTex_ST;

v2f vert (appdata_base v)
{
	v2f o;
	PositionFog( v.vertex, o.pos, o.fog );
	o.normal = v.normal;
	o.uv = TRANSFORM_TEX(v.texcoord,_MainTex);
	o.lightDir = ObjSpaceLightDir( v.vertex );
	TRANSFER_VERTEX_TO_FRAGMENT(o);
	return o;
}

uniform sampler2D _MainTex;
uniform float4 _Color;

float4 frag (v2f i) : COLOR
{
	half4 texcol = tex2D( _MainTex, i.uv );	
	half4 c = DiffuseLight( i.lightDir, i.normal, texcol, LIGHT_ATTENUATION(i) );
	c.a = texcol.a * _Color.a;
	return c;
}
ENDCG

			SetTexture [_MainTex] {combine texture}
			SetTexture [_LightTexture0] {combine texture}
			SetTexture [_LightTextureB0] {combine texture}
		}
	}
	
 	// ------------------------------------------------------------------
	// Radeon 9000

	SubShader {
		// Ambient pass
		Pass {
			Blend SrcAlpha OneMinusSrcAlpha
			Name "BASE"
			Tags {"LightMode" = "PixelOrNone"}
			Color [_PPLAmbient]
			SetTexture [_MainTex] {constantColor [_Color] Combine texture * primary DOUBLE, texture * constant}
		}
		// Vertex lights
		Pass { 
			Blend SrcAlpha OneMinusSrcAlpha
			Name "BASE"
			Tags {"LightMode" = "Vertex"}
			Lighting On
			Material {
				Diffuse [_Color]
				Emission [_PPLAmbient]
			}
			SetTexture [_MainTex] {Combine texture * primary DOUBLE, texture * primary}
		}
		
		// Pixel lights with 0 light textures
		Pass { 
			Blend SrcAlpha One
			Name "PPL"
			Tags { 
				"LightMode" = "Pixel" 
				"LightTexCount" = "0"
			}
			Cull Off

CGPROGRAM
#pragma vertex vert
#include "UnityCG.cginc"

struct v2f {
	V2F_POS_FOG;
	float2 uv		: TEXCOORD0;
	float3 normal	: TEXCOORD1;
	float3 lightDir	: TEXCOORD2;
};

uniform float4 _MainTex_ST;

v2f vert(appdata_base v)
{
	v2f o;
	PositionFog( v.vertex, o.pos, o.fog );
	o.normal = v.normal;
	o.uv = TRANSFORM_TEX(v.texcoord,_MainTex);
	o.lightDir = ObjSpaceLightDir( v.vertex );
	return o; 
}
ENDCG
			Program "" {
				SubProgram {
					Local 0, [_ModelLightColor0]
					Local 1, [_Color]

"!!ATIfs1.0
StartConstants;
	CONSTANT c0 = program.local[0];
	CONSTANT c1 = program.local[1];
EndConstants;

StartOutputPass;
	SampleMap r0, t0.str;			# main texture
	SampleMap r1, t2.str;			# normalized light dir
	PassTexCoord r2, t1.str;		# normal
	
	DOT3 r5.sat, r2, r1.2x.bias;	# R5 = diffuse (N.L)
	
	MUL r0.rgb, r0, r5;
	MUL r0.rgb.2x, r0, c0;
	MUL r0.a, r0, c1;
EndPass; 
"
				}
			}
			SetTexture[_MainTex] {combine texture}
			SetTexture[_CubeNormalize] {combine texture}
		}
		
		// Pixel lights with 1 light texture
		Pass {
			Blend SrcAlpha One
			Name "PPL"
			Tags { 
				"LightMode" = "Pixel" 
				"LightTexCount" = "1"
			}
			Cull Off

CGPROGRAM
#pragma vertex vert
#include "UnityCG.cginc"

uniform float4 _MainTex_ST;
uniform float4x4 _SpotlightProjectionMatrix0;

struct v2f {
	V2F_POS_FOG;
	float2 uv		: TEXCOORD0;
	float3 normal	: TEXCOORD1;
	float3 lightDir	: TEXCOORD2;
	float4 LightCoord0 : TEXCOORD3;
};

v2f vert(appdata_tan v)
{
	v2f o;
	PositionFog( v.vertex, o.pos, o.fog );
	o.normal = v.normal;
	o.uv = TRANSFORM_TEX(v.texcoord,_MainTex);
	o.lightDir = ObjSpaceLightDir( v.vertex );
	
	o.LightCoord0 = mul(_SpotlightProjectionMatrix0, v.vertex);
	
	return o; 
}
ENDCG
			Program "" {
				SubProgram {
					Local 0, [_ModelLightColor0]
					Local 1, [_Color]

"!!ATIfs1.0
StartConstants;
	CONSTANT c0 = program.local[0];
	CONSTANT c1 = program.local[1];
EndConstants;

StartOutputPass;
	SampleMap r0, t0.str;			# main texture
	SampleMap r1, t2.str;			# normalized light dir
	PassTexCoord r4, t1.str;		# normal
	SampleMap r2, t3.str;			# a = attenuation
	
	DOT3 r5.sat, r4, r1.2x.bias;	# R5 = diffuse (N.L)
	
	MUL r0.rgb, r0, r5;
	MUL r0.rgb.2x, r0, c0;
	MUL r0.rgb, r0, r2.a;			# attenuate
	MUL r0.a, r0, c1;
EndPass; 
"
				}
			}
			SetTexture[_MainTex] {combine texture}
			SetTexture[_CubeNormalize] {combine texture}
			SetTexture[_LightTexture0] {combine texture}
		}
		
		// Pixel lights with 2 light textures
		Pass {
			Blend SrcAlpha One
			Name "PPL"
			Tags {
				"LightMode" = "Pixel"
				"LightTexCount" = "2"
			}
			Cull Off
CGPROGRAM
#pragma vertex vert
#include "UnityCG.cginc"

uniform float4 _MainTex_ST;
uniform float4x4 _SpotlightProjectionMatrix0;
uniform float4x4 _SpotlightProjectionMatrixB0;

struct v2f {
	V2F_POS_FOG;
	float2 uv		: TEXCOORD0;
	float3 normal	: TEXCOORD1;
	float3 lightDir	: TEXCOORD2;
	float4 LightCoord0 : TEXCOORD3;
	float4 LightCoordB0 : TEXCOORD4;
};

v2f vert(appdata_tan v)
{
	v2f o;
	PositionFog( v.vertex, o.pos, o.fog );
	o.normal = v.normal;
	o.uv = TRANSFORM_TEX(v.texcoord,_MainTex);
	o.lightDir = ObjSpaceLightDir( v.vertex );
	
	o.LightCoord0 = mul(_SpotlightProjectionMatrix0, v.vertex);
	o.LightCoordB0 = mul(_SpotlightProjectionMatrixB0, v.vertex);
	
	return o; 
}
ENDCG
			Program "" {
				SubProgram {
					Local 0, [_ModelLightColor0]
					Local 1, [_Color]

"!!ATIfs1.0
StartConstants;
	CONSTANT c0 = program.local[0];
	CONSTANT c1 = program.local[1];
EndConstants;

StartOutputPass;
	SampleMap r0, t0.str;			# main texture
	SampleMap r1, t2.str;			# normalized light dir
	PassTexCoord r4, t1.str;		# normal
	SampleMap r2, t3.stq_dq;		# a = attenuation 1
	SampleMap r3, t4.stq_dq;		# a = attenuation 2
	
	DOT3 r5.sat, r4, r1.2x.bias;	# R5 = diffuse (N.L)
	
	MUL r0.rgb, r0, r5;
	MUL r0.rgb.2x, r0, c0;
	MUL r0.rgb, r0, r2.a;			# attenuate
	MUL r0.rgb, r0, r3.a;
	MUL r0.a, r0, c1;
EndPass; 
"
				}
			}
			SetTexture[_MainTex] {combine texture}
			SetTexture[_CubeNormalize] {combine texture}
			SetTexture[_LightTexture0] {combine texture}
			SetTexture[_LightTextureB0] {combine texture}
		}
	}
	
	// ------------------------------------------------------------------
	// Radeon 7000
	
	SubShader {
		Material {
			Diffuse [_Color]
			Emission [_PPLAmbient]
		}
		Lighting On
		Fog { Color [_AddFog] }
		Pass {
			Blend SrcAlpha OneMinusSrcAlpha
			Name "BASE"
			Tags {"LightMode" = "PixelOrNone"}
			Color [_PPLAmbient]
			Lighting Off
			Cull Off
			SetTexture [_MainTex] {Combine texture * primary DOUBLE}
			SetTexture [_MainTex] {Combine texture * primary DOUBLE}
			SetTexture [_MainTex] {Combine texture * primary DOUBLE, primary * texture}
		}
		Pass { 	
			Blend SrcAlpha OneMinusSrcAlpha
			Name "BASE"
			Cull Off
			Tags {"LightMode" = "Vertex"}
			SetTexture [_MainTex] {Combine texture * primary DOUBLE, primary * texture}
		}
		Pass {
			Blend SrcAlpha One
			Name "PPL"
			Cull Off
			Tags {
				"LightMode" = "Pixel"
				"LightTexCount" = "2"
			}
			SetTexture [_LightTexture0] 	{ combine previous * texture alpha, previous }
			SetTexture [_LightTextureB0]	{
				combine previous * texture alpha + constant, previous
				constantColor [_PPLAmbient]
			}
			SetTexture [_MainTex] 	{ combine previous * texture DOUBLE, primary * texture}
		}
		Pass {
			Blend SrcAlpha One
			Name "PPL"
			Cull Off
			Tags {
				"LightMode" = "Pixel"
				"LightTexCount"  = "1"
			}
			SetTexture [_LightTexture0] {
				combine previous * texture alpha + constant, previous
				constantColor [_PPLAmbient]
			}
			SetTexture [_MainTex] 	{ combine previous * texture DOUBLE, primary * texture}
		}
		Pass {
			Blend SrcAlpha One
			Name "PPL"
			Cull Off
			Tags {
				"LightMode" = "Pixel"
				"LightTexCount"  = "0"
			}
			SetTexture [_MainTex] 	{ combine previous * texture DOUBLE, primary * texture}
		}
	}
}

// Fallback to Alpha Vertex Lit
Fallback "Transparent/VertexLit", 2

}
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