1 // Upgrade NOTE: replaced '_Projector' with 'unity_Projector'
2 // Upgrade NOTE: replaced '_ProjectorClip' with 'unity_ProjectorClip'
3
4 Shader "Projector/Multiply" {
5 Properties {
6 _ShadowTex ("Cookie", 2D) = "gray" {}
7 _FalloffTex ("FallOff", 2D) = "white" {}
8 }
9 Subshader {
10 Tags {"Queue"="Transparent"}
11 Pass {
12 ZWrite Off
13 ColorMask RGB
14 Blend DstColor Zero
15 Offset -1, -1
16
17 CGPROGRAM
18 #pragma vertex vert
19 #pragma fragment frag
20 #pragma multi_compile_fog
21 #include "UnityCG.cginc"
22
23 struct v2f {
24 float4 uvShadow : TEXCOORD0;
25 float4 uvFalloff : TEXCOORD1;
26 UNITY_FOG_COORDS(2)
27 float4 pos : SV_POSITION;
28 };
29
30 float4x4 unity_Projector;
31 float4x4 unity_ProjectorClip;
32
33 v2f vert (float4 vertex : POSITION)
34 {
35 v2f o;
36 o.pos = mul (UNITY_MATRIX_MVP, vertex);
37 o.uvShadow = mul (unity_Projector, vertex);
38 o.uvFalloff = mul (unity_ProjectorClip, vertex);
39 UNITY_TRANSFER_FOG(o,o.pos);
40 return o;
41 }
42
43 sampler2D _ShadowTex;
44 sampler2D _FalloffTex;
45
46 fixed4 frag (v2f i) : SV_Target
47 {
48 fixed4 texS = tex2Dproj (_ShadowTex, UNITY_PROJ_COORD(i.uvShadow));
49 texS.a = 1.0-texS.a;
50
51 fixed4 texF = tex2Dproj (_FalloffTex, UNITY_PROJ_COORD(i.uvFalloff));
52 fixed4 res = lerp(fixed4(1,1,1,0), texS, texF.a);
53
54 UNITY_APPLY_FOG_COLOR(i.fogCoord, res, fixed4(1,1,1,1));
55 return res;
56 }
57 ENDCG
58 }
59 }
60 }
