#ifndef SPRITES_DEPTH_ONLY_PASS_INCLUDED
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#define SPRITES_DEPTH_ONLY_PASS_INCLUDED
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#include "UnityCG.cginc"
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sampler2D _MainTex;
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float _Cutoff;
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float _ZWriteOffset;
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struct VertexInput {
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float4 positionOS : POSITION;
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float2 texcoord : TEXCOORD0;
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float4 vertexColor : COLOR;
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};
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struct VertexOutput {
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float4 positionCS : SV_POSITION;
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float4 texcoordAndAlpha: TEXCOORD0;
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};
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VertexOutput DepthOnlyVertex (VertexInput v) {
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VertexOutput o;
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o.positionCS = UnityObjectToClipPos(v.positionOS - float4(0, 0, _ZWriteOffset, 0));
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o.texcoordAndAlpha.xy = v.texcoord;
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o.texcoordAndAlpha.z = 0;
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o.texcoordAndAlpha.a = v.vertexColor.a;
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return o;
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}
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float4 DepthOnlyFragment (VertexOutput input) : SV_Target{
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float4 texColor = tex2D(_MainTex, input.texcoordAndAlpha.rg);
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#if defined(_STRAIGHT_ALPHA_INPUT)
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texColor.rgb *= texColor.a;
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#endif
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clip(texColor.a * input.texcoordAndAlpha.a - _Cutoff);
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return 0;
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}
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#endif
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