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35 行
1.0 KiB
35 行
1.0 KiB
using System.Reflection;
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using UnityEngine.Graphing;
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namespace UnityEngine.MaterialGraph
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{
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[Title("Art/Conversion/HSVtoRGB")]
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public class HSVtoRGBNode : CodeFunctionNode
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{
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public HSVtoRGBNode()
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{
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name = "HSVtoRGB";
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}
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protected override MethodInfo GetFunctionToConvert()
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{
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return GetType().GetMethod("Unity_HSVToRGB", BindingFlags.Static | BindingFlags.NonPublic);
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}
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static string Unity_HSVToRGB(
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[Slot(0, Binding.None)] Vector3 hsv,
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[Slot(1, Binding.None)] out Vector3 rgb)
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{
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rgb = Vector3.zero;
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return
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@"
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{
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//Reference code from:https://github.com/Unity-Technologies/PostProcessing/blob/master/PostProcessing/Resources/Shaders/ColorGrading.cginc#L175
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{precision}4 K = {precision}4(1.0, 2.0 / 3.0, 1.0 / 3.0, 3.0);
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{precision}3 P = abs(frac(hsv.xxx + K.xyz) * 6.0 - K.www);
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rgb = hsv.z * lerp(K.xxx, saturate(P - K.xxx), hsv.y);
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}
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";
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}
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}
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}
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