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31 lines
786 B
31 lines
786 B
Shader "Hidden/VertexBinormalNode"
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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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#pragma vertex vert_img
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#pragma fragment frag
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#include "UnityCG.cginc"
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float4 frag( v2f_img i ) : SV_Target
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{
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float2 xy = 2 * i.uv - 1;
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float z = -sqrt(1-saturate(dot(xy,xy)));
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float3 vertexPos = float3(xy, z);
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float3 normal = normalize(vertexPos);
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float3 worldNormal = UnityObjectToWorldNormal(normal);
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float3 tangent = normalize(float3( -z, xy.y*0.01, xy.x ));
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float3 worldPos = mul(unity_ObjectToWorld, vertexPos).xyz;
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float3 worldTangent = UnityObjectToWorldDir(tangent);
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float tangentSign = -1;
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float3 worldBinormal = normalize( cross(worldNormal, worldTangent) * tangentSign);
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return float4(worldBinormal, 1);
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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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