13 lines
No EOL
550 B
HLSL
13 lines
No EOL
550 B
HLSL
/*
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contributors: Inigo Quiles
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description: inverse quartic polynomial https://iquilezles.org/articles/smoothsteps/
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use: <float|float2|float3|float4> invQuartic(<float|float2|float3|float4> value);
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*/
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#ifndef FNC_INVQUARTIC
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#define FNC_INVQUARTIC
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float invQuartic(const in float v) { return sqrt(1.0-sqrt(1.0-v)); }
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float2 invQuartic(const in float2 v) { return sqrt(1.0-sqrt(1.0-v)); }
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float3 invQuartic(const in float3 v) { return sqrt(1.0-sqrt(1.0-v)); }
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float4 invQuartic(const in float4 v) { return sqrt(1.0-sqrt(1.0-v)); }
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#endif |