20 lines
686 B
HLSL
20 lines
686 B
HLSL
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float2 getMatcapUV(float3 viewDirection, float3 normalDirection)
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{
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half3 worldViewUp = normalize(half3(0, 1, 0) - viewDirection * dot(viewDirection, half3(0, 1, 0)));
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half3 worldViewRight = normalize(cross(viewDirection, worldViewUp));
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half2 matcapUV = half2(dot(worldViewRight, normalDirection), dot(worldViewUp, normalDirection)) * 0.5 + 0.5;
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return matcapUV;
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}
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float3 CreateBinormal(float3 normal, float3 tangent, float binormalSign)
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{
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return cross(normal, tangent.xyz) *
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(binormalSign * unity_WorldTransformParams.w);
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}
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float random(in float3 st)
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{
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return frac(cos(dot(st.xyz, float3(12.9898, 78.233, 123.691))) * 43758.5453123);
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}
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