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37 lines
2.4 KiB
37 lines
2.4 KiB
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--- !u!114 &11400000
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m_Script: {fileID: 11500000, guid: 78b2425a2284af743826c689403a4924, type: 3}
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m_Name: CotangentFrame
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m_functionInfo: "// Made with Amplify Shader Editor\n// Available at the Unity Asset
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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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bitangent.y, normal.y,$\t\t\t\t\ttangent.z, bitangent.z, normal.z )@;5;False;3;True;normal;FLOAT3;0,0,0;In;True;position;FLOAT3;0,0,0;In;True;uv;FLOAT2;0,0;In;CotangentFrame;False;False;3;0;FLOAT3;0,0,0;False;1;FLOAT3;0,0,0;False;2;FLOAT2;0,0;False;1;FLOAT3x3;0\nNode;AmplifyShaderEditor.FunctionOutput;5;-204.4942,-327.5543;Float;False;True;TBN;0;False;1;0;FLOAT3x3;0,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1;False;1;FLOAT3x3;0\nWireConnection;3;0;4;0\nWireConnection;3;1;2;0\nWireConnection;3;2;1;0\nWireConnection;5;0;3;0\nASEEND*/\n//CHKSM=D848432022B91999196CE4B6F7A8557013863A11"
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m_functionName:
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m_description: 'Calculating Cotangent frame without precomputed data
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http://www.thetenthplanet.de/archives/1180'
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