69 lines
1.6 KiB
Plaintext
69 lines
1.6 KiB
Plaintext
Shader "UnityEffects/ShadowProject" {
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Properties{
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_ShadowTex("ShadowTex", 2D) = "gray" {}
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_bulerWidth("BulerWidth", float) = 1
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_shadowfactor("Shadowfactor", Range(0,1)) = 0.5
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_ShadowMask("ShadowMask",2D) = "white"{}
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}
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SubShader{
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Tags { "Queue" = "AlphaTest+1" }
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Pass {
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ZWrite Off
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ColorMask RGB
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Blend DstColor Zero
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Offset -1, -1
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CGPROGRAM
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#pragma vertex vert
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#pragma fragment frag
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#include "UnityCG.cginc"
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struct v2f {
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float4 pos:POSITION;
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float4 sproj:TEXCOORD0;
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};
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float4x4 unity_Projector;
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sampler2D _ShadowTex;
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sampler2D _ShadowMask;
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//half4 _ShadowTex_TexelSize;
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//float _bulerWidth;
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float _shadowfactor;
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v2f vert(float4 vertex:POSITION) {
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v2f o;
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o.pos = UnityObjectToClipPos(vertex);
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o.sproj = mul(unity_Projector, vertex);
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return o;
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}
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half4 frag(v2f i) :COLOR{
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half4 uv4 = UNITY_PROJ_COORD(i.sproj);
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half shadowColR = tex2Dproj(_ShadowTex, uv4).r;
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half maskColA = tex2Dproj(_ShadowMask, uv4).r;
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half a = (shadowColR * maskColA);
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//blur来柔化边缘
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//a += tex2D(_ShadowTex, uv + _ShadowTex_TexelSize.xy * _bulerWidth * float2(1,0)).a;
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//a += tex2D(_ShadowTex, uv + _ShadowTex_TexelSize.xy * _bulerWidth * float2(0,1)).a;
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//a += tex2D(_ShadowTex, uv + _ShadowTex_TexelSize.xy * _bulerWidth * float2(-1,0)).a;
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//a += tex2D(_ShadowTex, uv + _ShadowTex_TexelSize.xy * _bulerWidth * float2(0,-1)).a;
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//a = a/5;
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if (a > 0)
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{
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return half4(1,1,1,1) * (1 - _shadowfactor * a);
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}
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else
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{
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return half4(1,1,1,1);
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}
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}
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ENDCG
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}
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}
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FallBack "Diffuse"
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}
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