66 lines
1.9 KiB
C#
66 lines
1.9 KiB
C#
using UnityEngine;
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namespace LeTai.Asset.TranslucentImage
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{
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[CreateAssetMenu(fileName = "New Scalable Blur Config",
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menuName = "Translucent Image/ Scalable Blur Config",
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order = 100)]
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public class ScalableBlurConfig : BlurConfig
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{
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[SerializeField]
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[Tooltip("Blurriness. Does NOT affect performance")]
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float radius = 4;
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[SerializeField]
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[Tooltip("The number of times to run the algorithm to increase the smoothness of the effect. Can affect performance when increase")]
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[Range(0, 8)]
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int iteration = 4;
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[SerializeField]
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[Tooltip("How strong the blur is")]
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float strength;
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/// <summary>
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/// Distance between the base texel and the texel to be sampled.
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/// </summary>
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public float Radius
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{
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get { return radius; }
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set { radius = Mathf.Max(0, value); }
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}
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/// <summary>
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/// Half the number of time to process the image. It is half because the real number of iteration must alway be even. Using half also make calculation simpler
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/// </summary>
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/// <value>
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/// Must be non-negative
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/// </value>
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public int Iteration
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{
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get { return iteration; }
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set { iteration = Mathf.Max(0, value); }
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}
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/// <summary>
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/// User friendly property to control the amount of blur
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/// </summary>
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///<value>
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/// Must be non-negative
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/// </value>
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public float Strength
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{
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get { return strength = Radius * Mathf.Pow(2, Iteration); }
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set
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{
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strength = Mathf.Clamp(value, 0, (1 << 14) * (1 << 14));
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// Bit fiddling would be faster, but need unsafe or .NET Core 3.0+
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// for BitOperations, and BitConverter that doesn't creates garbages :(
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radius = Mathf.Sqrt(strength);
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iteration = 0;
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while ((1 << iteration) < radius)
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iteration++;
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radius = strength / (1 << iteration);
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}
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}
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}
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}
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