55 lines
2.9 KiB
Plaintext
55 lines
2.9 KiB
Plaintext
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%TAG !u! tag:unity3d.com,2011:
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--- !u!114 &11400000
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m_Name: CotangentFrame
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Unity Asset Store - http://u3d.as/y3X \n/*ASEBEGIN\nVersion=19100\nNode;AmplifyShaderEditor.FunctionInput;2;-613.4943,-271.5543;Inherit;False;View
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dp1 = ddx ( position )@$float3 dp2 = ddy ( position )@$float2 duv1 = ddx ( uv
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)@$float2 duv2 = ddy ( uv )@$float3 dp2perp = cross ( dp2, normal )@$float3 dp1perp
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= cross ( normal, dp1 )@$float3 tangent = dp2perp * duv1.x + dp1perp * duv2.x@$float3
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bitangent = dp2perp * duv1.y + dp1perp * duv2.y@$float invmax = rsqrt ( max (
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dot ( tangent, tangent ), dot ( bitangent, bitangent ) ) )@$tangent *= invmax@$bitangent
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*= invmax@$return float3x3 (\ttangent.x, bitangent.x, normal.x,$\t\t\t\t\ttangent.y,
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http://www.thetenthplanet.de/archives/1180'
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