// Upgrade NOTE: replaced 'mul(UNITY_MATRIX_MVP,*)' with 'UnityObjectToClipPos(*)'
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Shader "DynamicShadowProjector/Blit/CopyMipmap" {
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Properties {
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_MainTex ("Albedo (RGB)", 2D) = "white" {}
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}
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CGINCLUDE
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#include "UnityCG.cginc"
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sampler2D _MainTex;
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half4 _MainTex_TexelSize;
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fixed _Falloff;
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struct v2f_blit
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{
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float4 pos : SV_POSITION;
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half2 uv0 : TEXCOORD0;
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};
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struct v2f_downsample
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{
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float4 pos : SV_POSITION;
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half2 uv0 : TEXCOORD0;
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half2 uv1 : TEXCOORD1;
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half2 uv2 : TEXCOORD2;
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half2 uv3 : TEXCOORD3;
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};
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v2f_blit vert_blit(appdata_img v)
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{
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v2f_blit o;
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o.pos = UnityObjectToClipPos(v.vertex);
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o.uv0 = v.texcoord.xy;
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return o;
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}
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fixed4 frag_blit_with_falloff(v2f_blit i) : COLOR
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{
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fixed4 color = tex2D(_MainTex, i.uv0);
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return lerp(fixed4(1,1,1,0), color, _Falloff);
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}
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v2f_downsample vert_downsample(appdata_img v)
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{
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v2f_downsample o;
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o.pos = UnityObjectToClipPos(v.vertex);
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o.uv0 = v.texcoord.xy + _MainTex_TexelSize.xy;
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o.uv1 = v.texcoord.xy - _MainTex_TexelSize.xy;
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o.uv2 = v.texcoord.xy + _MainTex_TexelSize.xy * half2(1,-1);
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o.uv3 = v.texcoord.xy + _MainTex_TexelSize.xy * half2(-1,1);
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return o;
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}
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fixed4 frag_downsample_mip0(v2f_downsample i) : COLOR
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{
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half4 uv;
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uv.zw = 0;
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uv.xy = i.uv0;
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fixed4 color = 0.25*tex2Dlod(_MainTex, uv);
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uv.xy = i.uv1;
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color += 0.25*tex2Dlod(_MainTex, uv);
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uv.xy = i.uv2;
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color += 0.25*tex2Dlod(_MainTex, uv);
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uv.xy = i.uv3;
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color += 0.25*tex2Dlod(_MainTex, uv);
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return color;
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}
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ENDCG
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SubShader {
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Pass {
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ZTest Always Cull Off ZWrite Off
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Fog { Mode Off }
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CGPROGRAM
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#pragma vertex vert_blit
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#pragma fragment frag_blit_with_falloff
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ENDCG
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}
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Pass {
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ZTest Always Cull Off ZWrite Off
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Fog { Mode Off }
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CGPROGRAM
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#pragma vertex vert_downsample
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#pragma fragment frag_downsample_mip0
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#pragma target 3.0
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ENDCG
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}
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}
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}
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