87 lines
2.9 KiB
C#
87 lines
2.9 KiB
C#
using System;
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using UnityEngine;
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using UnityEngine.Rendering;
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using UnityEngine.Rendering.Universal;
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namespace X.Rendering.Feature
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{
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public class AutoExposureVolumeProfile : VolumeComponent, IPostProcessComponent
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{
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public const int rangeMin = -9; // ev
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public const int rangeMax = 9; // ev
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public static Vector4 GetHistogramScaleOffsetRes()
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{
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float diff = rangeMax - rangeMin;
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float scale = 1f / diff;
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float offset = -rangeMin * scale;
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return new Vector4(scale, offset, Screen.width, Screen.height);
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}
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public enum EyeAdaptation
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{
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/// <summary>
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/// Progressive (smooth) eye adaptation.
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/// </summary>
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Progressive,
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/// <summary>
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/// Fixed (instant) eye adaptation.
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/// </summary>
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Fixed
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}
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[Serializable]
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public sealed class EyeAdaptationParameter : VolumeParameter<EyeAdaptation> { }
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[Range(1f, 99f)]
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public Vector2Parameter filtering = new Vector2Parameter(new Vector2(50f, 95f));
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/// <summary>
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/// Minimum average luminance to consider for auto exposure (in EV).
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/// </summary>
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[Range(rangeMin, rangeMax), InspectorName("Minimum (EV)")]
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public FloatParameter minLuminance = new FloatParameter (0f);
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/// <summary>
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/// Maximum average luminance to consider for auto exposure (in EV).
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/// </summary>
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[Range(rangeMin, rangeMax), InspectorName("Maximum (EV)")]
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public FloatParameter maxLuminance = new FloatParameter (0f);
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/// <summary>
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/// Middle-grey value. Use this to compensate the global exposure of the scene.
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/// </summary>
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[Min(0f), InspectorName("Exposure Compensation"), Tooltip("Use this to scale the global exposure of the scene.")]
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public FloatParameter exposureCompensation = new FloatParameter (1f);
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/// <summary>
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/// The type of eye adaptation to use.
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/// </summary>
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[InspectorName("Type"), Tooltip("Use \"Progressive\" if you want auto exposure to be animated. Use \"Fixed\" otherwise.")]
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public EyeAdaptationParameter eyeAdaptation = new EyeAdaptationParameter() { value = EyeAdaptation.Progressive };
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/// <summary>
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/// The adaptation speed from a dark to a light environment.
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/// </summary>
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[Min(0f), Tooltip("Adaptation speed from a dark to a light environment.")]
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public FloatParameter speedUp = new FloatParameter (2f);
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/// <summary>
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/// The adaptation speed from a light to a dark environment.
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/// </summary>
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[Min(0f), Tooltip("Adaptation speed from a light to a dark environment.")]
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public FloatParameter speedDown = new FloatParameter (1f);
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public bool IsActive() => filtering.overrideState;
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public bool IsTileCompatible()
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{
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return true;
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}
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}
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}
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