48 lines
802 B
Plaintext
48 lines
802 B
Plaintext
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Shader "Hidden/ComputeScreenPos"
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{
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Properties
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{
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_A ("_A", 2D) = "white" {}
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}
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SubShader
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{
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Pass
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{
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CGPROGRAM
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#include "UnityCG.cginc"
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#pragma vertex vert_img
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#pragma fragment frag
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sampler2D _A;
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float4 frag( v2f_img i ) : SV_Target
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{
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float4 a = tex2D( _A, i.uv );
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float4 screenPos = ComputeScreenPos(a);
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return screenPos;
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}
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ENDCG
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}
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Pass
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{
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CGPROGRAM
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#include "UnityCG.cginc"
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#pragma vertex vert_img
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#pragma fragment frag
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sampler2D _A;
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float4 frag (v2f_img i) : SV_Target
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{
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float4 a = tex2D(_A, i.uv);
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float4 screenPos = ComputeScreenPos(a);
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screenPos = screenPos / screenPos.w;
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screenPos.z = (UNITY_NEAR_CLIP_VALUE >= 0) ? screenPos.z : screenPos.z* 0.5 + 0.5;
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return screenPos;
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}
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ENDCG
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}
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}
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}
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